IMD 1.16: 28/05/2007 17:13:49 -FOG/UTL046         -FOG/UTL046/UTL#046DOC +M7FNK COMM7FNK DOC M7FNK NOTM7LIB COM M7LIB DOC!"MDM730 DOC MDM730 DOC5MDM730 MSG MDM730 NOTMDM730 UPDMDM740 INFY%&'()*MDMLINK COM#MDMLINK DOC $/UTL#046CRC, MDM730 (NOTES ON HOW TO USE) Copyright 1983,1984 Irvin M. Hoff W6FFC 22 Mar 1984 NOTE: MDM730 SUPPORTS AUTO-DIALING AND AUTOMATIC CONTINUOUS REDIALING FOR THE FOLLOWING MODEMS: SIGNALMAN ANCHOR MARK XII HAYES SMARTMODEM 300 OR 1200 MODEMS U. S. ROBOTICS 300/1200 MODEM PMMI 103 S-100 PLUG-IN MODEM IT CAN STILL BE EASILY USED WITH OTHER EXTERNAL MODEMS ITH MANUAL DIALING SUCH AS THE BELL 212A, RACAL-VADIC, ETC. IT   SUPPORTS UP TO TWO LONG-DISTANCE DIALING SYSTEMS (SUCH AS 'MCI', 'SPRINT', 'TYMNET', ETC. FOR TOUCH-TONE DIALING SYSTEMS. INTRODUCTION: ------------ MDM730 enables a computer to communicate with another computer. This is normally done byde the Racal-Vadic, Hayes Smartmodem, U. S. Robotics, Signalman Anchor, etc. The program discussed in this guide allows each computer involved to directly control its own modem, converting DC pulses into audio tones which are sent to (or receive using standard telephone lines but with special audio tones sending serial data. Two common speeds are used, depending on the facilities available -- 300 Baud or 1200 Baud. A "modem" is used which provides these audio tones. This is an acronym for "d from) the telephone line. (The standard 1200 baud transmissions use "DPSK" (dibit phase shift keying) instead of "AFSK" (audio frequency shift keying). For short distances, no modems are required as the computer can provide the necessary digimodulator and demodulator". The one section (modulator) provides the audio tones for sending over the telephone line and the other section (demodulator) then converts those audio tones back to digital pulses the computer uses to receive the incoming dtal voltages. This discussion is centered around systems intended for use over distances ranging from several miles to literally around the world. FEATURES: -------- A program to communicate with another computer can range from very simata. The modem itself is a hardware utility, usually costing around $75 to $200 for a typical 300 Baud device and from $250 to $800 for a system offering 1200 Baud as well as 300 Baud. Some of these (such as the PMMI S-100 modem board) plug dirple to very complex. MDM730 is one of the more complex such programs available today. It started in 1977 as a relatively simple program. It was called MODEM at that time. It was intended to be used primarily as a means of exchanging programs with othectly into the computer itself, while others are totally independent of the computer and use an interconnect cable (usually a RS-232 type) to control the external modem. A Bell 212A is an excellent example of this type modem. Other examples would incluer people in other cities. Since that time a number of other (very useful) features have been added, in addition to improved methods of program transfer. A list of some of the features offered by this particular program include: 1) Ability to ta  lk with another computer via keyboard at each end. (Called the "terminal mode".) 2) Ability to operate a remote mainframe computer such as TYM-SHAR, or special data bank systems now commonplace. This includes "bulletin board" systems for r special external program.) 9) Automatic disconnect from the telephone line when using CTL-N, or "X" as an option during file transfer. Two other disconnect commands with the PMMI modem. 10) Additional features of special interest to theceiving, sending or just read- ing messges or other types of information. 3) Ability to upload (send) or download (receive) programs from other computers whether TYM-SHAR, data banks, remote hobby systems or just another individual in anotose using the PMMI 103 S-100 plug-in modem, the U. S. Robotics 300/1200, the Anchor Signalman Mark XII, the Hayes Smartmodem 300 or 1200 or other "Hayes-compatible" modems. Those features basically include automatic dialing and redialing (her location. 4) Ability to copy incoming information on a printer. If the print- er is too slow to copy the data directly, the extra characters back into a large storage buffer until they can be printed. 5) Ability to copy incoming data iif requested) until the other computer finally answers. a) Automatic selection of a particular phone number from a library of names and numbers. (These phone numbers can be very easily changed by using a special external pronto memory for automatic transfer to a disk file. 6) Accomodates any computer clock speed up to 25.5 MHz. in 0.1 Mhz. increments for uniform results. (The clock speed is actually of modest interest, it is only used for setting timing loopsgram.) b) Automatic dialing for alternate long-distance systems (where auto-dialing touch-tone modems are used). c) Entry of a hand-typed number. Although it might be as simple to manually dial the number as hand-type it, it .) 7) Advanced type of error detection (CRC or Cyclic Redundancy Check) using automatically generated high-speed lookup tables. 8) Ability to send any of 11 different pre-programmed function keys. (These keys are very easy to reset, using a can then be automatically redialed indefinitely. USING THE PROGRAM THE FIRST TIME: -------------------------------- For now, we shall assume the program is ready to use on your equip- ment. (Normally the user must make some modest change  s to the program before it can be used. This includes changing the port numbers and some other personal options. These will be covered later in the section that describes how to adapt it to your equipment.) When the program is brought up is sho B>>COMMAND: A: and you are in the same user area on the A: drive. You can also say: A>>COMMAND: A: 12 to change user areas. When finished (using this example), say: A12>>COMMAND: CPM and you will gows this display (if using the PMMI modem): MDM730 - (type M for Menu) Version for PMMI S-100 modem starting at port: C0H B>>COMMAND: x The cursor stops at point "x:" waiting for some sort of command. Typing a "M" followed immedi back to CP/M with the original driver and user area. OPTIONS: ------- There are 6 primary options and 13 secondary options that may be typed on the command line. In additon there are over 35 commands ranging from single character to three cately by a RETURN, shows the first page of a 4-page help guide. If you do not have a PMMI modem, you would have seen this (or a customized heading for your particular equipment): MDM730 - (type M for Menu) Version for Non-Pmmi modem B>> haracters that can be used (such as DIR, ERA, LOG, etc.) Those are listed on the menu. (The exact number varies depending on whether you have the PMMI modem, etc.) Primary Options: E, L, M, R, S, T E = Echo mode (special type of full duplCOMMAND: In this case only a 3-page help guide is used, since the 4th page is used to assist those with the PMMI modem. It tells them a little about changing from originate to answer mode, how to change Baud rates, how to disconnect, etc. ex) L = Local modem (no remote echo, half duplex) M = Menu display showing features that are available R = Receive a file from remote facility S = Send a file to a remote facility T = Terminal mode (full duplex, echo provived remotely)  Several commands are similar to those already used for CP/M, such as 'ERA', 'DIR' and the ability to change disk drives and user areas. This adds tremendous flexibility while remaining in the modem command mode. To change disk drives, just say:  Secondary Options: A, B, D, J, O, Q, R, S, V, X, 0, 1 A = Answer mode (used only by PMMI modems) B = Batch mode -- allows automatic multiple file transfer (This is normally only used from modem-to-modem as no RCP/M system supports ba  tch mode file transfers.) D = Disconnect when done, stay in MDM730 J = Command mode when finished with a file transfer O = Originate mode (used only by PMMI modems) Q = Quiet mode, special purpose feature rarely used except if operatingopying text to disk use T (or E or L) FILENAME.TYP Start or Stop toggles described on subsequent screen. R - Receive CP/M file using Christensen Protocol S - Send CP/M file using Christensen Protocol COMMAND: R (or S) FILENAME.TYP R and S can use through a "BYE" program. R = Receive data shown on CRT during file transfer S = Send data shown on CRT during file transfer V = Visual inspection of an ASCII file being transferred. Not often used as most ASCII files are now "squeezed" fo the following subcommands: B - Bulk transfer using wildcards (e.g., *.*) D - Disconnect when done, return to command mode Q - Quiet mode (no messages to console) V - View or bytes on console X - When done, disconnect,r minimum transfer time and disk space. X = Exit to CP/M when finished, disconnect from phone line 0 = Odd parity (PMMI modem) 1 = Even parity (PMMI modem) Although you can get the following information from the help guide in M go to CP/M The single letter commands may also be used on the command line when the program is initially executed. Hit any KEY to CONTINUE - - - - - - - - - - - - - - - - - - DISCUSSION OF HELP GUIDE PAGE 1: ---DM730 itself, showing it here will allow us to discuss the various features in somewhat better detail. (*) INDICATES PMMI, ANCHOR, HAYES AND US ROBOTICS ALL APPLY. - - - - - - - - - - - - - - - - - - THE HELP GUIDE, PAGE ---------------------------- There are basically three types of commands that may be used with this program: 1) Single-letter commands shown on page one. 2) Three-letter commands shown on page 2, and 3) Control- comm1: ---------------------- Single Letter Commands ? - Display current settings ^ - Function key intercept character, then (0-9) M - Display the menu E - Terminal mode with echo L - Terminal mode with local echo T - Terminal mode For cands shown on page 3. Going down the list: ? - shows current parameters. As these are closely tied in with some of the other options, we shall show a typical example later in this discussion. ^ - shows the function key intercept ch  aracter. This may be easily changed using an external program. (You may prefer 'escape' or some seldom used control-character.) NOTE: typing this character while in the command mode will display all the programmable function key defini person using "E". Both "E" and "L" are useful at times for some types of modems that do not use full-duplex, or for some main frame units that run half-duplex. The combination of "T", "E" and "L" gives an exceltions with the exception of the log-on string which uses CTL-L. M - shows the menu a page at a time. You may abort after any page is shown with a control-C. E - terminal mode with echo. When talking with another terminal also also ulent choice to use on various systems. Normally the "T" mode is sufficient except when talking with another person and then the "E" mode at one end or "L" mode at both ends will provide normal results. If the remote systesing MDM730 (or a comparable program), one of you must send an "echo-back" so you can both see what the other person is typing. This is needed for full-duplex operation. Usually the person originating the call will type "E" instead of "T". m does not supply a LF after a CR, you can get that from the 'TLF' command. T - puts the program directly into "terminal mode", allowing it to send from the keyboard to the other computer, and to copy any- thing coming from the other compute However either may do this. If "both" use the echo mode, the program usually starts typing a string of feedback characters since both computers are re-sending the same character over and over. You can stop this by just returning to command r with the exception of file transfers (use "R" to receive those). R - used only for receiving files from the other computer. These are usually sent in binary form with either checksum verification or more commonly, CRC (Cyclic Redundancy Cmode (type control-E) and then retyping "T" rather than "E". L - terminal mode with local echo. Shows what you are typing but does not send an echo of the other person's typing back to him. Can be used at both ends, in place of onehecking). If ready to receive another file, you have several choices, depending on the program used by the other computer. After notifying him you are ready (or will be very shortly), you can type: B>>COMMAND: R HELLO.DOC    and when he starts to send, you will receive the program which then goes directly to the disk. You could also have said: B>>COMMAND: RB This is called the "Batch mode" and is an extremely useful way to receive programs a to "R" but sends instead of receives. If the other system is ready to receive, you could then type: B>>COMMAND: S HELLO.DOC It will tell you how many records are involved and how many minutes and seconds it will take toutomatically, from another computer using a similar program. He will use the batch mode for sending the programs and that automatically provides the file names at the receiving end. In this manner, large numbers of programs can be transfe send the program. If the other system is ready to receive, it starts the transfer, showing how many records have been sent. If any errors occur during transmission, it shows what they are and counts them. It will resend any records not crred completely automatically, including full disks. (Assuming you care to pay the toll calls for the time it will take!) NOTE: The ideal way to receive batch mode would be: B>>COMMAND: RB since you may not know in advorrectly received at the other computer. If too many consecutive errors occur (normally set at 10), the transfer is terminated. The 'batch mode' may also be used for sending: B>>COMMAND: SB HELLO.* (sending batch mode) ance how many programs he will be sending. NOTE: While receiving a file, any errors will be shown on the console CRT, indicating that portion of the program is being repeated. If the file finishes transferring no will send all files starting with HELLO, or can send just one file, or can send several non-related files in this manner: B>>COMMAND: SB HELLO.DOC XDIR.COM TERM.* etc. Be sure to put a space between the various files. You canrmally, it will have been received error-free. Those error notices are merely to let the user know a momentary problem caused a resend. The error messages indicate phone line quality. S - used only to end programs. Similar include the 'X' option: B>>COMMAND: SBX HELLO.* MDM730.LBR MDM730.AQM When the file transfer is completed it disconnects from the phone line and reverts to CP/M. This allows you to be absent when the file is finished, offering an   advantage when sending lengthy files. - - - - - - - - - - - - - - - - - - THE HELP GUIDE, PAGE 2: ---------------------- Three Letter Commands CPM - Exit from this program to CP/M DIR - List directory and space free abandoning MDM730. It does not do a warm reboot unless selected on your overlay, saving time. CAUTION: It does not disconnect the modem from the phone line, which allows intentional return to CP/M temporarily. DIR - Enables the user  (may specify drive) ERA - Erase file (may specify drive) LOG - Change default drive/user no. (specify drive/user) and reset disks. e.g. LOG A0: or LOG B: (user # unchanged) SPD - Set speed of file output in terminal mode TIM - Select Baud rate to see the library of any disk without needing to return to CP/M first. Can be adjusted when installing the program to show 3, 4, or 5 groups depending on the width of your CRT display. Normally set to 5 for 80-column displays. Shows the for "time-to-send" message TCC - Toggle CRC/Checksum mode on receive TLC - Toggle local command immediate or after CTL- TLF - Toggle LF after CR in "L" or "T" mode for a disk file TRB - Toggle rubout to backspace conversion TXO - Toggle XOFF testing iamount of disk spacing remaining on the logged-in default drive. (You must log in any drive you wish to write on, or to see the correct free disk space remaining.) See the LOG feature below. ERA - Enables the user to erase any files from an terminal mode file output NUM - List remote systems SET - Set modem baud rate BYE - Disconnect, then return to CP/M CAL - Dial number DSC - Disconnect from the phone line The following are terminal text buffer commands: DEL - Delete memory ny disk without the need to return to CP/M first. Wild cards (* and ?) accepted. LOG - When a new disk is inserted, you can see the directory and read files from it but cannot write to it without getting a "BDOS ERR". This command allows ybuffer and file WRT - Write memory buffer to disk file Hit any KEY to CONTINUE - - - - - - - - - - - - - - - - - - DISCUSSION OF HELP GUIDE, PAGE 2: -------------------------------- CPM - This returns to normal CP/M use,ou to log in a new disk so you can immediately write on it without first returning to CP/M for a warm boot. You can select drive and user number. (This also enables DIR to show the correct free disk space remaining.) You can say: LOG   for same drive, user area, new disk LOG A LOG A: LOG A14 (user areas are 0-15) LOG A11: SPD - Sets the delay between characters and/or delay between lines in the "T" mode when using control-T to upload a pre-typed fi choose var- ious Baud rates as the transfer time is changed automatically. TCC - Most modem programs originally used simple checksum verification of received sectors. Most now use Cyclic Redundancy Checking which finds certain transmission le. Since most bulletin boards and TYM-SHAR systems normally use line editors that require a delay after they have received a line, you can add delay between characters (in increments of 10 ms.) and/or enter delay between lines (in incremenerrors the simple checksum system might overlook. This toggle allows the user to select checksum for those systems known to not offer CRC. When set normally to CRC, the program automatically switches to check- sum after trying several timts of 100 ms.). This is preset for most systems at 50 and 500 ms. They can be changed at any time. Current values can be checked by using the " ? " command. TIM - This option lets you set the file transfer time from 110 Baud to 9600 es to use CRC. TLC - Nearly all computers use "control-characters" to do various tasks such as move the cursor around, clear the screen, reboot the system, etc. You might want to send a control-E character to the local computer and not haveBaud. You can preset it (when installing the program) to the value normally used, but at times it is nice to be able to conveniently change the time shown to a different rate. Some initialization routines (discussed in the install section) ca it go to the remote system at the same time. Say a moment later you would like to send a control-E only to the remote computer. You would do this: control-E (goes to local computer only) control-^ control-E (goes to n make this change automatically. This command does not show if using the PMMI* board as the speed is automatically changed to agree with the current Baud rate selection. It also does not show if the custom overlay uses the SET command tothe remote computer only) You can reverse the TLC toggle causing this response: control-E (goes to remote computer only) control-^ control-E (goes to the local computer only) All other control-chars. would operate i  n a similar manner. This gives extra flexibility in using this program for special systems like TYM-SHAR, etc. NOTE: If using control-^ is awkward, you can pick a different character when installing the program initially. TLF - If s"NO" (indicating no user routine in the overlay for choosing different speeds.) BYE - Disconnects the modem from the phone line, closes any file that may be open and returns to CP/M. CAL - PMMI* command, shows the phone library for auto-dialiending a file while in terminal mode (via CTL-T option) most mainframe computers will not want you to send a line feed. As all editors include the LF after CR, you have the option with this toggle of sending or not sending a line feed. If typng. If not using a PMMI*, this will not be shown, instead NUM is shown. It displays the telephone library. (Non-PMMI users will find the NUM display beneficial as it can display useful phone num- bers for manual dialing.) NOTE: Use ting manually in the "T" mode, you can get a line feed with CTL-J. It is automatically included after CR with "L" or "E" modes. TRB - Allows the rubout char. to be changed to backspace if desired. TXO - Used when uploading pre-typed text fileshe phone number overlay to easily change the numbers that are stored. This overlay also accesses up to two alternate long distance dialing systems for the touch- tone auto-dialing modems. You can also use an external p to other systems such as TYM-SHAR or bulletin boards, etc. Most of those have line editors that take a moment to move the line you just finished from their edit buffer into memory. The XOFF character halts your system from sending until irogram called M7LIB to rapidly change any phone numbers. DSC - Disconnects the modem from the phone line whenever selected. DEL - If copying incoming information into memory, and you decide you do not want to bother saving it to disk after all,t is ready for a new line. Used only in the terminal mode. NUM - Not shown if using PMMI*. This shows the non-PMMI* people the phone library numbers which can be used for manual dialing. SET - Not shown if using PMMI, or if SETUPR is set to  this closes (and then deletes) the disk file you had opened. WRT - saves what you have been copying to the disk file already opened for that purpose. When returning from the "T" mode to command mode, a warning is shown that you may lose wh  at has been saved unless you use WRT (write to disk). - - - - - - - - - - - - - - - - - - THE HELP GUIDE, PAGE 3: ---------------------- Local Commands while in Terminal Mode CTL-@ - Send a break tone for 300 ms. the log-on message if TRANLOGON is set YES and a message has been included in the LOGON area. Can use this feature to sign on various bulletin board systems, although that would require an identical password on each. CTL-N - Disco CTL-B - Change Baud rate (PMMI only) CTL-E - Exit to command mode CTL-L - Send log-on message CTL-N - Disconnect from the phone line CTL-P - Toggle printer CTL-Y - Start copy into buffer CTL-R - Stop copy into buffer Start &nnect the modem from the phone line. (CTL-D had been used for this command, but it was too easy to accidently type CTL-D when expecting to hit CTL-S or CTL-E or CTL-X. You can easily change this to whatever you like in the over Stop may be toggled as often as desired. A ":" at start of line indicates buffer is copying. XOFF automatically used to stop input when writing full buffer to disk, XON sent to resume. CTL-T - Transfer ASCII file to remote CTL-^ - lay you use for your equipment.) CTL-P - Toggles the printer on-off. Very useful feature. Similar to normal control-P but in this case if the modem is running faster than normal printer speed, the characters just back into a speciSend local control character to remote - - - - - - - - - - - - - - - - - - DISCUSSION OF HELP GUIDE, PAGE 3: -------------------------------- CTL-@ - Sends a break character to the other computer. Used in some TYMal buffer while the printer tries to catch up. Most dot matrix printers are considerably faster than most telephone modems, however. Can be toggled at any time you are in the "T", "L" or "E" modes. Often used to copy items from-SHAR systems, etc. (Used only in PMMI mode) CTL-B - PMMI command, changes the Baud rate from 110-710, in addition changes the file transfer time accordingly. CTL-E - Returns to command modem from "T", "L", "E" modes. CTL-L - Will send  bulletin boards, etc. that are not worth permanently saving on disk. CTL-Y - Used only in terminal mode. If a file was opened prior to going to "T" (terminal) mode, nothing will be saved until control-Y is typed. This places a ";  " (semicolon) at the start of each new line, indicating the memory is "hot" and is now copying for saving to a file. You can toggle this off by using control-R. NOTE: To open a file use: COMMAND: T FILENAME.EXT and - - - - - - - - - - - - - - THE HELP GUIDE, SPECIAL PMMI PAGE: --------------------------------- Additional Subcommands for PMMI Modems Modem control: A - Answer tone for send or receive O - Originate tone for send or then CTL-Y and CTL-R will control what is copied to be placed in that file. CTL-R - Stops the copy into memory, shuts off the ";" at start of each line. These two commands (CTL-Y to start, and CTL-R to stop) control what is being receive Parity options: 1 - Set and check for odd parity 0 - Set and check for even parity Both ends must be capable of these options which are available only in R and S modes. The parity checking will be part of the file transfer prosaved. When returning to command (via CTL-E), you will then be warned to save the information to disk via the WRT command or it will likely be lost. (You may never use CTL-R although CTL-Y is re- quired to commence saving to mtocol. Speed Options: After entering your primary and secondary options, you can set the modem speed by placing a "." after the options followed by the speed e.g., 300, 1200. EXAMPLE: SBOT.600 will set the modem for 600 bauemory for the disk file you previously opened.) (These commands -- CTL-P, CTL-Y and CTL-R give MDM730 tremendous versatility. You can copy incoming data either to disk or to printer (or both). My own printer is a 300 d Hit any KEY to CONTINUE - - - - - - - - - - - - - - - - - - DISCUSSION OF HELP GUIDE, SPECIAL PMMI PAGE: ------------------------------------------- When using MDM730 with the PMMI board, you will either dial out oBaud Teletype Corporation Model 43, yet it works great when I am using the Bell 212A at 1200 Baud. The printer falls behind, but misses nothing as it eventually catches up with the contents of the large buffer.) - - - - r (far less likely) answer some incoming call. Since the unit will be in "originate mode" about 98% of the time, it is set to automatically come up in the originate mode at default speed (300 Baud) whenever a call has been completed. If you want to u  se answer mode, you need to use the "A" command. If a speed is not included, it will stay at the default speed. Until a connection has been made, there are no tones applied to the line. Originate tones at 300 Baud are automatically added at thaclude alternate long distance dialing systems. There are several ways to auto-dial. 1) from the command line 2) from the phone number library line In addition you can auto-redial from either of these lines. Once the number has t time. In addition to telling the PMMI modem if it should use originate or answer tones, you can tell it what Baud rate to use. A typical command (once connection is made to another modem) would be: B>>COMMAND: O.600 Thauto-dialed and there is no answer, it will ask you if you want it to continuously auto-redial until it does receive an answer (or you decide to abort). To get the phone library, type CAL on the command line. You then normally just type tis puts the tones on the phone line for originate and at the same time sets the PMMI board for 600 Baud. Another typical response might be: B>>COMMAND: RAB.450 This places the answer tones on the phone line, sets the program fhe alphabetic character at the start of the ap- propriate line. It will show the number being dialed. You can also do this from the main command line if you know in advance what alphabetic character is associated with that particular number: or receiving batch mode at 450 Baud. It returns to the terminal mode when the transfer is completed. Other optional PMMI commands seem self-explanatory, such as dis- connect, etc. - - - - - - - - - - - - - - - - - - PMM B>>COMMAND: CAL P This calls up the "P" line in the library and dials that number, then if busy asks if you want it to continue redialing. You can use: B>>COMMAND: CAL 313-749-6569 and it will dial the number speciI, ANCHOR, HAYES AND ROBOTICS AUTO-DIALING AND AUTO-REDIALING: ---------------------------------------------------------------- There are several very useful and versatile features offered for the PMMI, Anchor, Hayes and Robotics users. These infied. You can then do either of these on the library command line, as well. This gives a tremendous versatility. NOTE: To access the alternate long distance dialing systems (up to two are offered), use the phone number overlay and fill in the info  r- mation regarding your access number, billing number, etc. It will then show how to enter a special character ahead of each phone number where alternate long distance system is desired. This only works where touch-tone systems are in use. -  computer at other end like a remote terminal. Also stands for "text mode". When in "T" mode you can copy incoming to printer or to disk, and send pre- typed ASCII text files via CTL-T. V) visual -- lets you see incoming ASCII f - - - - - - - - - - - - - - - - - CASCADING COMMANDS: ------------------ Several commands may be used on the same line. Ones normally used are: A, B, D, E, J, L, O, Q, R, S, T, V, X (and Baud rate if PMMI). A typiciles while being sent to the disk system. NOTE: The Baud rate is only used for the PMMI S-100 modem. Many of the custom overlays allow use of the SET command to change Baud rate with non-PMMI modems. - - - - - - - al PMMI selection might be: RABQJ.300 The commands have been listed previously but will be listed here again: A) answer tones for PMMI S-100 modem, puts tones online. B) batch mode (must be used at both ends if used at all) (usually only- - - - - - - - - - - TYPICAL PARAMETERS SHOWN BY THE "?" COMMAND: ------------------------------------------- B>>COMMAND: ? Mode: CRC Rub is backspace Printer buffer is OFF Modem speed is 300 baud Terminal mode file buffer  available modem-to-modem with operators present at each end.) E) echo mode for conversing with a system not offering echo. J) will return you to the command mode after a file transfer. L) local echo shows what you are sending if no remote echo. is inactive Unused portion of buffer is 16384 bytes Use CTL-^ to send local command to remote LF NOT sent after CR in "L" or "T" for a disk file XOFF testing NOT used in terminal mode file output XON NOT automatically tested after CR in terminal mode  O) originate tones for PMMI S-100 modem, puts tones online. Q) quiet mode, suppresses messages on local console. R) receive file transfers with CRC or checksum protocol. S) send file transfers, also shows transfer time. T) terminal mode - operatesfile output Char. delay (terminal file mode) is: 50 ms. per character Line delay (terminal file mode) is: 500 ms. per character - - - - - - - - - - - - - - - - - - DISCUSSION OF TYPICAL PARMETERS SHOWN BY THE "?" COMMAND: -  ------------------------------------------------------- By this time, most of these parameters are self-explanatory. They primarily show how the options and toggles have been set. The user can check on any of the major parameters at any time byhanged using an external file called M7LIB.COM. This permits any of the 36 phone num- bers to be changed in only a few seconds. It works directly on the MDM730.COM file. If extensive changes are to be made, you may prefer to use an overlay file call: 1) Typing control-E to return to command mode and 2) Typing ? to see the list of current parameters. - - - - - - - - - - - - - - - - - - FUNCTION KEYS: ------------- There are 10 function keys which may be eaed M7NM-6.ASM. This permits using your editor to make quick and selective changes, or to substitute an entire new library. (You may need to add or remove things like '1-' for long distance dialing in your area.) That file also is used to set the altsily programmed with an external file called M7FNK.COM in just a few moments. It makes the changes directly to the MDM730.COM file. (There is an additional CTL-L log-on selection that is programmable in your overlay.) To view the contents of thernate long-distance dialing routines for SPRINT, MCI, TYMNET, etc. - - - - - - - - - - - - - - - - - - RETRY OPTION: ------------ The consecutive error limit has been set to 10. When transferring files from RCPM systeme function keys, type 'M' for menu while on the command line and it will show the character currently used for the function key intercept. (It will be '^' unless you select another.) You could then type that character (followed by ) on the command s their XMODEM program aborts should this limit be reached. Each overlay has an option previously called ACKNAK. This has bee renamed to RETRY. It should be set NO if working RCPM systems or other computers with a program similar to MDM7. If  line and it will display the entire contents of the function keys. - - - - - - - - - - - - - - - - - - CHANGING THE PHONE NUMBER LIBRARY: --------------------------------- The phone numbers in the library may be easily cusing large mainframe computers (such as ARPANET), they do get busy at times and will not accept additional information. This may give timeout errors at your end, but not at the mainframe. If RETRY is set YES, after 10 consecutive errors it then asks   if you wish to reset the error counter and keep trying. It should take some 100 seconds to get 10 consecutive errors in this situation. - - - - - - - - - - - - - - - - - - INSTALLING THE PROGRAM: ---------------------- t gives the latest information and tells how many sectors to SAVE, the illustration says 66 sectors, but the program has grown since that time.) Generally no changes need to be made in specific overlays unless you have some particular requiremen Although this is obviously the very first thing that needs to be done, it was saved until last for several reasons. The most important of these was the need to first explain what some of the options will do when selected. By this time the usert different from others using the same equipment. (Such as the log-on message, for example.) You may also wish to say "YES" to the AUTODIAL question, which might be cur- rently set "NO". The "hard way" would be to get the 158k MDM730.ASM sourc should have a fairly good idea what options would work best for him. When looking at the beginning of the program where the these are selected, it should now be rather easy to pick the ones that are most useful. There are various ways to change code and then edit it to suit. This is likely to be quite unsatisfactory for most users as it will not contain the information peculiar to your computer (which is in the individual overlay you select otherwise.) Thus various methods are availe the program to suit a specific user. You are offered several methods. The "easy way" is to get the MDM730.COM file plus the appropriate overlay for your computer. You then edit the overlay (if needed) to suit your local needs, assemble it to get aable, one of which should provide the easiest method for your system. NOTE: Although designed with special emphasis on the auto-dialing and redialing capability of the PMMI, Anchor, Hayes or Robotics, it works quite well on non-PMMI modems. In th .HEX file then use the simple instruction and DDT.COM to com- bine the standard MDM730.COM file with your overlay. The front end of each overlay contains all the information in the front of the MDM730 source code itself. (Read the special message thae author's system a stock Bell 212A Dataphone is used together with a normal serial I/O that can be programmed to easily switch from 300 to 1200 bps. A great variety of other computers and modems can use this same program quite easily. This is lik  ely the most versatile phone modem programs currently available for CP/M users. OUR THANKS TO: ------------- A great number of people have contributed to the growth of this program since 1977. Two people have been particularly helpful to me in developing the MDM700 series modem programs: Keith Petersen (W8SDZ) and Frank Gaude' (ex-K6IBE). Their help and interest have been greatly appreciated. We hope this verstile program will give you hours of enjoyment and fulfill your modem needs. - Irv Hoff W6FFC st have been greatly appreciated. We hope this verstile program will give you hours of enjoyment and fulfill your modeTOPIC: MDM730.ASM MODEM PROGRAM DATE : 22 MAR 84 NOTE: This program when assembled is 73 sectors long. Use this figure when merging the appropriate overlay file for your computer via DDT, etc. (Most of the overlays were written when MDM7xx.COM was only 66 sectors and the example included in each says to store 66 sectors.) For MDM730 use: B>SAVE 73 MDM730.COM NOTE: Use M7FNK.COM to easily and quickly change any of the 10 function key assignments. You can read th  e M7FNK.DOC file for additional information. (by Sigi Kluger.) The log-on key (CTL-L can be changed in the overlay. NOTE: M7LIB.COM is a rapid and surprisingly easy way to quickly change any entries in the phone number library. See M7LIBord count FF = show both hex and decimal count 0DFFH - SAVSIZ 20 = 4k file transfer buffer size (see table below for other options) 0E00H - NUMBLIB (start of telephone number library) To change the file transfer buffer siz.DOC if instructions are needed. M7NM-6.ASM is necessary for setting or altering numbers for 'SPRINT', 'MCI', etc. It would also be better if making a lot of changes such as adding or deleting '1-' required for long distance dialing in e via DDT, change byte 0DFFH: 20 (hex) = 32 records = 4k 40 (hex) = 64 records = 8K 60 (hex) = 96 records = 12k 80 (hex) = 128 records = 16k (Use the largest value that does not give errors during some areas. NOTE: If using the phone number overlay to change the phone library numbers, be sure to use: M7NM-6.ASM The phone number library contains 36 numbers (A-Z plus 0-9) Most users will not need the lengthy (158k) file tranfers when the disk activates. You have about 10 seconds before a timeout error would occur. 8" systems can easily handle 16k per transfer in 3-4-5 seconds. 5-1/4" systems are usually much slower. In that case try 8k or source code at all. Just get MDM730.COM and then check one of the associated over- lay programs to obtain the overlay for your particular computer. Merge that with MDM730.COM according to the instructions near the start of the overl12k. Default is set for 4k as that is known to work satisfactorily on all disk systems.) - Irv Hoff RECENT CHANGES: -------------- MDM730 - After a file transfer, now automatically returns to the last terminal mode used (E, L oay file, using DDT.COM, etc. (See above note relative to saving 73 sectors. STAT.COM would then show 146 records for 20k.) The following bytes can be changed easily with DDT, then SAVE 73 0DFEH - HEXSHOW 00 = do not show hex recr T). This makes it extremely easy to use modem-to-modem communications in addition to normal file transfers. Added a 'J' option in the event a return to command mode is desired. Example: COMMAND: RJ FILENAME.Ext Changed max. timing delays   to optimize use with satellite al- ternate dialing systems. (Submitted by Bob Plouffe.) MDM728 - changed RCVRECD routine to move the test for EOT outside the SOH loop. MDM727 - function key character shown in menu. Typing that character on A CHANCE TO STABILIZE. - Irv Hoff NOTE1: I am trying to review all the overlays that are currently available, and change them to indicate "SAVE 73 sectors", etc. Those will all be dated 03/22/83, but the original names will be left command line shows all function key definitions. MDM726 - 'T' no longer needed to return to terminal mode after a file transfer, i.e., 'RT' or 'ST' no longer used, just 'R' or 'S'. MDM724 - added 10 function keys for auto-typing preselected messa intact. Several are quite ver- sion dependent and will require an update. NOTE2: (Since there are a significant number of changes to MDM730 from previous versions, and in the expectation it is the final version in this series, there will ges MDM722 - phone number library now has 36 entries rather than 26 (has A-Z as usual plus 0-9). MDM716 - Robust addition to minimize problems due to intermittent noise. Gives added protection against timeouts on mainframes. Batch mode tranbe no .DIF file offered. The full source code is available - 158k.) MDM730 is the last in the MDM7xx series. Although it is being released to the public domain, it is copyrighted in my name. No further updates or alterations are plannsfer improved. CREDITS: ------- MDM730 - Irv Hoff MDM728 - Bob Plouffe MDM727 - Irv Hoff MDM726 - Irv Hoff MDM724 - Sigi Kluger MDM722 - Bill Brehm with routines developed by Fred Viles MDM716 - Bob Plouffe ed or are authorized. Only with this understanding do I release the source code to MDM730. A great many people have helped make this program what it is, and have assisted in the development and thorough testing. It now seems to bTOPIC : MDM730 LAST IN THE SERIES FROM : IRV HOFF W6FFC DATE : 22 MAR 84 NOTICE TO SYSOPS: PLEASE DO NOT ACCEPT ANY FURTHER UPDATES PAST MDM730. IT IS THE LAST AUTHORIZED VERSION OF THIS EX- CELLENT MODEM PROGAM. IT MUST BE GIVEN e bug-free, although there are ALWAYS changes that can be made to any program to make it more useful for individual needs. Such changes sometimes ruin other features that person has no way to evaluate. This program has been updated a  n average of every two weeks since its inception. Since it is so hardware-dependent, it could be continually updated from "Here to Eternity". Several overlays are totally dependent on the version number, (for the Racal-Vadic, the Haye SERIES. - Irv Hoff MDM100 OR MDM800, OR MODM100 OR MODM800, (ETC.) MIGHT MAKE GOOD SELECTIONS SHOULD SOMEBODY WANT TO START A NEWs Micromodem ][ and possibly 1-2 others.) Each new update totally obsoletes the previous update. Obviously this is an intolerable situation. I have spent more time promulgating this program than virtually anybody would imagine or anticipate. I am unable to continue de- voting the MANY hours of time it has taken to constantly modify and update new features. Therefore, I request all concerned to accept MDM730 as a final version in this series, and not update it further, or accept any updates from any source. I retain copyright benefits to the name MDM7xx. NOTE: IF YOU WISH TO MAKE ANY ALTERATIONS OR CHANGES YOU THINK SHOULD RECEIVE NATIONAL ATTENTION, PLEASE SELECT A DIFFERNT NAME  AND START A "NEW THREAD". NEW MODEMS WILL ALWAYS BE MADE, REQUIRING DIFFERENT SOFT- WARE HANDLING. PERHAPS MDM100 OR MDM800, OR MODM100 OR MODM800, (ETC.) MIGHT MAKE GOOD SELECTIONS SHOULD SOMEBODY WANT TO START A NEW  TOPIC : MDM730 RECENT CHANGES FROM : IRV HOFF W6FFC DATE : 22 MAR 84 COPYRIGHTED 1984 BY IRVIN M. HOFF This program may be used freely for any non-commercial purpose, provided that the user does not remove or alter this notice or THOUT MY APPROVAL. IT IS ONLY WITH THIS AGREEMENT THAT I AM RELEASING THE SOURCE CODE.) THIS ALSO ALLOWS THE PROGRAM TO BE MADE GENERALLY AVAILABLE THROUGH SIG/M; ALSO OTHER SOURCES. - Irv Hoff W6FFC *************************************** the copyright statement. It is not covered by a warranty either express or implied. No changes or alterations are authorized. If desirious of modifying the program for national release, it may be used for such purposes only if the name is changed ******************************** 03/22/84 1. Automatically returns to "E", "L" or "T" mode after a MDM730 file transfer, whichever one was last used. This now makes modem-to-modem use really convenient as either end can immediately type toand credit given where appropriate. *********************************************************************** NOTE: ALTHOUGH THIS PROGRAM IS BEING PLACED IN THE PUBLIC DOMAIN, IT IS NOW IN A FINAL VERSION THAT HAS BEEN THOROUGHLY TESTED ON A WI the other after a file transfer, where one is using "E" and the other using "T" mode. It also adapts particularly well to new verions of XMODEM. 2. 'J' option added. Allows return to command mode with 'RJ' or 'RS'. The normal user will nDE VARIETY OF SYSTEMS. NO FURTHER CHANGES OR UPDATES ARE EITHER ANTICIPATED OR AUTHORIZED. IF ANY ALTERATIONS ARE MADE, A DIFFERENT NAME SHOULD BE SELECTED AND A NEW SERIES COMMENCED. THIS PROGRAM HAS RECEIVED A NEW UPDATE AN AVERAGE OF EVERY TWever need this fea- ture, but was requested for some unusual applications. 3. RETRY in place of ACKNAK. If YES, after 10 errors, asks if you want to reset the error counter and try again. if NO, aborts after 10 consecutive errors. RCPM sysO WEEKS SINCE IT WAS STARTED. IT MUST BE ALLOWED TO STABILIZE. THE NAME MDM7xx IS COPYRIGHTED, SO PLEASE OB- SERVE THE REQUEST TO SELECT A DIFFERENT NAME IF CHANGES ARE MADE. (SYSOPs ARE BEING ADVISED TO NOT ACCEPT ANY FURTHER MDM7xx VERSIONS WItems using XMODEM and other modem-to-modem transfers have al- ready aborted, but can be used on mainframes where busy conditions are more prevelant than poor tranmsissions. (Set no if only using RCPM or modem-to-modem, YES for file transfer   on TYM-SHAR mainframes such as Arpanet.) 4. Maximum wait for control responses increased (10 places) to properly handle delayed transmission times resulting from satellite alternate dialing systems. (Submitted by Bob Plouffe.) 5. If Xon-Xoff selected, no longer asks if you want delays. 6. Maximum time to wait for an echo character now 200 ms. 7. Trap rubout (delete) chars. received in terminal mode. 8. Numerous other changes. Read MDM730.DOC for assistance. 01/0!9"13 MDMFNK v1.10 (c) ESKAY 02-19-84 MDM7 installation program for function keys. NOTE: the version of MDM7 must be 24 or higher! Please enter the file name (and optional DU:) of the file to be installed/inspected : >ͷ3#1/83 First version. Can be assembled with ASM.COM. (Previously MDM700 it was necessary to have the MODEM7.LIB file and use MAC.COM to assemble the program.) Selected MDM700 as a new program to allow me to make changes that I felt mighPY  BK a{!2ͣA:<2 w# 7&!~A´#K"#v* You can now change the INTERCEPT CHARACTER (key prefix), any of the ten function keys, or you can exit to CP/M. A - INT CHAR: ~#{ B - FNK 0 t be beneficial. This would not hinder others from updating existing programs to their own satisfaction. The name was also selected so it would fit on databanks limiting file names to 6 characters. - Irv Hoff *******************: W C - FNK 1 : W D - FNK 2 : W E - FNK 3 : W F - FNK 4 : W G - FNK 5 : W H - FNK 6 : W I - FNK 7 : W J - FNK 8 : W K - FNK 9 : W*$ }2' characters free. Q - abort prog**************************************************** as also selected so it would fit on databanks limiting file names to 6 characters. - Irv Hoff *******************ram S - save and quit YOUR CHOICE? >ͷ~QʮS*ABXLX==G > ͷ_ Keep trailing ? ͨ _Y‡6 #6*~#~# ʵy=“*w#«X~# ¶~#ß ERROR - new string won't fit!X Type   the new INTERCEPT CHARACTER > ͨ *wXLa!~# 9ͭO:=26͓î#~ hq͹ W #n # ERROR - key definition table not found - aborting.  ERROR - NUMLIB not found at 0E00H - might not be a valid MDM7 file (M yG>GO> ͹  2B . >2B dC  C 0͹ M E yb :B b > ͹ ɯ2B y0͹ > ͹ > ͹ ҹ ʹ ʹ ʹ ʹ ʹ >^͹ @͹ *.  O*.  x2 y2 : _$ : _ $ YDM724 or higher). Aborting...  ERROR - drive/user spec invalid Ö DISK WRITE ERROR - FILE TRASHED  ERROR - file not found. Please restart.  *** END OF EXECUTION *** * $ X$ $  $ OGa{_H@ Wa HV Wa r# xa ́ H ͊ H͊ |ڪ › }ڪ ~# x› ~+ x° å {ozg 7}o|g }o|g}o}|g}o}o|g >2%2&$կ@~#:\,ʷ!ڷH~, AuAp<2%#~:ʸ?2&#~:ʸmG~#:ʫ0m mOxGÏx m2&ø~:¿#~,! >?:%G:&O>~.#' |g}o }o|g}o|g}o|g3 #}/o|/gկ2 !"  i * }o|g" h >2 M * : !" | › }  *  " }o|gھ " }oÿ  ! *>?#'#> ~, !J=_.:;,<>ɾw 7 $ t>u$ t$ tn$ ʠ$ $ Æ 2  !~#o|g6: ʷ !~ʷ , w#ê !: ~#  {    y   uch as an 'escape' or CTL-A. Enter a "B", "C", etc to change the respective key definition. The key can be as long as free memory allows. After entering the key definition you have a chance to retain or delete the trailing RETURN, and then the key will be inserted into the table, provided it fits. To totally blank a key, enter a null string and answer "N" to the trailing CR question. When you are finished, you can use the "S" comamnd to save the file back to disk. As an alternative, you can aDocumentation for M7FNK.COM v1.10 - by Sigi Kluger 02/19/84 NOTE: This program depends on NUMLIB being at 0E00H! ---- --------------------------------------------- M7FNK.COM is a program used to alter the function key assignments for lso abort without update. NOTE: a ^C aborts to CP/M anywhere except when entering a new INTERCEPT CHARACTER. CR question. When you are finished, you can use the "S" comamnd to save the file back to disk. As an alternative, you can aMDM724 and later versions. M7MFNK takes no arguments on the command line. You will be prompted for the full file name to be installed. Drive/user spec is ok. Next, the intercept character, the function key assignments and free memory are displayed. Command options are prefixed with a character (A..K, Q and S). Enter an "A" to change the intercept character. It can be set to almost anything, but should be a rarely used character (such as ^). It can also be a rarely used control character, s  MDM7 update information 02/17/84 Sigi Kluger, El Paso TX 02-17-84 Being used to a great non-public modem program with a number of function keys, I decided to add ten function keys to MDM7. Great for things you do most, like DIR *.* $U0AD, or XMrably, I have written the M7FNK utility. M7FNK.COM is virtually self-explanatory and it is covered by its own short DOC file. (M7FNK.COM v1.10 is current.) 4. WHAT WILL NOT WORK Do not attempt to use DDT to modify the function keys. EspeciallyODEM S, or you could even save your name in a function key for logon. 1. HOW TO ACCESS (transmit) THE FUNCTION KEYS. You transmit the contents of a function key by typing first the INTERCEPT CHARACTER, then a digit 0..9. The INTERCEPT CHARACTE, do not force any control characters into the definitions. There can only be three non-printing characters in each definition, the start byte, an optional CR at the end, and the end byte. 5. DEFINITION FORMAT This is an example of the definitiR is an unique char- acter which tells MDM7 that a function key command follows. The INTERCEPT CHARACTER is set to ^ (circumflex). It could as easily be set to CTL-A or 'escape', for example. In the distribution version, the following keys are defineon for function key 1: DB 1,'THIS IS A FUNCTION KEY',CR,0 | | | | | |__stop character | |________________key definition plus CR |________________________________start character Each key definition string starts with the key numd: ^A0 DIR ^A1 DIR *.* $U0AD ^A2 XMODEM S ^A3 XMODEM R ^A4 BYE ^A5 CBBS (Function keys 2 and 3 have no trailing CR). 2. HOW MUCH ROOM? A total of 256 bytes are reserved for the function key definition. Each definitiber in binary. The function key processor searches for that number. Those numbers must be unique throughout the key definitions. EMPTY key definitions are en- coded thusly: DB 9,0 ;empty function key #9 on takes up the number of bytes in the string, PLUS 2. Note that you must not enclose any control characters in the definitions (CR is allowed and is optional). 3. HOW TO CHANGE THE FUNCTION KEYS In order to not increase the size of MDM7 conside  !9"12/\!Vd2vl!zd2!W~ =ï!{~ Xz ͶͶͶͶ!Bͣ €"~¬~Ͷ#¬_> Ͷ> Ͷ !5#6#  3!5` ))))0 o4͞## 6 #3>2/4 ʔ͞22x##o:2Ͷ>=Ͷ5:4ʔ ^5Gw#†:R70ڰ:_Aڰ[7*+|g}Ɛ'@'Ͷ:+A"!)*+"-> Ͷzz<*a7! "'zQzï*)*'|b}i-zï>2x>27:/ʲ_YN—ò* M7LIB program for changing MDM7xx phone library - 05/07/84$    M7LIB lets the user change the MDM7xx phone number library. EXAMPLES: M7LIB MDM7.COM (1) M7LIB MDM7.COM MDM77.COM (2) (1) changes the original file (named MDM7.COM) (2) changes the 2nd file, lelibrary in MDM7xx.COM, lists the library and then (after asking it if looks normal) displays a command line: CTL-C abort, hange, elete,

rint lib, ead, ave : To change or alter any line (such as the "F" line), you would aving original intact $ ++ UNABLE TO OPEN SOURCE FILE ++$ ++ OUTPUT FILE ALREADY EXISTS ++$ ++ NO DIRECTORY SPACE ++$ loading file...$ [Exiting program] $ ++ PHONE LIBRARY NOT FOUND ++$ PHONE LIBRARY LOCATED AT: $ DOES LIBRARthen type: CTL-C abort, hange, elete,

rint lib, ead, ave : CF The "C" would select "Change" and the "F" selects the line you wish to change. This same technique would be used to delete any line that is no lY LOOK RIGHT? $ CTL-C abort, hange, elete,

rint lib, ead, ave : $$ ABORTING...NO CHANGES MADE$ DESC..............1-XXX-XXX-XXXXM7LIB MDM7.COM (1) A>M7LIB B:MDM7.COM (2) B>  A:M7LIB MDM7.COM (3) A>M7LIB MDM7.COM ABC.COM (4) B>A:M7LIB B:MDM7.COM C:ABC.COM (5) 1) works only with the original file, altering it 2) the file can be on any selected disk 3) similar to (2) but M7LIB.COM is on another disk 4) if a 2nd file is named, it receives the changes 5) any of the files can be on any selected disk NOTE: Using M7LIB.COM to alter the telephone number library is surprisingly simple and fast. It does not however allow setting or resetting codes for SPRINT, MCI, etc. To do that you would need to use M7NM-x.ASM. This program is a highly modified version of CHGLIB written Jan 82 version 1.0 by Tony Ribeiro for MODEM7. - Irv Hoff   !9"12͟ MDMLNK v1.00 (c) ESKAY 03-26-84 Enter INPUT file name : >͖;͟ Enter name of .HEX file : >͖;͟ Enter OUTPUT file name : >͖:;"ªx* w# ":<2͟ INPUT FILE LOA>@!$Q-# ͛# ͛>v>ɯ>>>eDED. *|g.""ºx;* w# ."!%"͊z |ͩB͟ CKSUM ERROR IN HEX FILE ͩ*wK*~:#ͩOͩWͩ_ͩ"~AڱO#~AG#͟ HEX FILE LOADED ^Œ":=2*2d !~#o|g6:dʖ!~ʖFw#É!:ͥ~#    êê êyʪ êyG>GO> *ê ~# "͂t S:͌^͟ FINISHED - RETURNING TO CP/M ͟ CANNOT CLOSE OUTFILE ͟ WRITE ERROR ͟ DIRECTORY FULL??? ͟ INPUT͟ HEX͟ file NOT FOUND - aborting. ***** * *>^*@*O*. 9a{_HZW{HpW{r# x{͛H ͤ Hͤ|µ}~# xµ ~+ xÿ!$.MDMLNK $$$>22$կ~#:,B!B~FAA<2#DOC FOR MDMLNK v1.00 as of 03-26-84 MDMLNK is a utility for MDM7xx. It allows linking in the assembled overlay file without the use of DDT. This may be a bit more foolproof than the usuall DDT method. MDMLNK is self-prompting and will ignore all co~:C?2#~:CG~#:60 OxGx 2C~:J#~,U!m >?Z:G:O>͇~.#͇`ͧ`Ͳʧ*™>?Û#‡Ͳ#ß> §~F!=_.:;,<>ɾ>>>>mmand line parameters. Upon entry, MDMLNK will ask for the INPUT file name. Enter the name of the uninstalled MDM7xx.COM file and be sure to specify the full file name. Next, you are asked for the HEX file name. Enter the full name of the assembled ove  rlay file and be sure to include the .HEX suffix. Last, you will be asked for the OUTPUT filename. Enter the name of the installed MDM7xx file. Again, be sure to specify the full file name. MDMLNK will now first read the INPUT file, overlay it with the hex file, then write a temporary file which is finally renamed to the output file name. The temporary file is used so that the input file can be the same as the output file, yet a disk error will not wipe out the original. Errors will be reported f SUBJECT : MDM740 MODEM PROGRAM GENERAL INFORMATION FROM : IRV HOFF W6FFC DATE : 07 MAY 84 NOTICE: THIS PROGRAM IS COPYRIGHTED. IT MAY BE USED AT NO CHARGE FOR PERSONAL USE BUT MAY NOT BE ALTERED OR CHANGED WITHOUT PERMISSION. IT ISor full directory, unable to write (disk full), file not found, and in case the hex file is corrupt. All errors will abort to CP/M, possibly leaving a file MDMLNK.$$$. MDMLNK not only works on any MDM7 file of any size (within reason), but it can als NOT CONSIDERED A PUB- LIC DOMAIN PROGRAM. DISTRIBUTION AT NO CHARGE OR PECUNIARY BENEFIT IS PERMITTED. I had thought MDM730 was going to be the last in this series. I recently got my first autodial modem (A Racal-Vadic VA212PA). It haso (BONUS!!!) be used with XMODEM or any other file which will be overlaid by a HEX file which does not change its size. -Sigi  some features few other modems have, one of which is the ability to auto-link any of the 15 phone numbers it can store, in any sequence or combination. I fell in love with that feature immediately and decided I could do the same thing with the modem program itself. Hence MDM740 seemed very worthwhile and I was certain it would be well received. This also offers the opportunity to fix a few trivial things that have recently been noticed even though they were apparently around since MODEM7 d!  ays. Adding auto-linking is an entirely new ballgame! It gives the user a maximum opportunity to contact any of a group of numbers, athough it greatly simplifies calling just one number. It also offers an unique choice of options as illustratedst available number - touching any key stops the beep and goes to terminal mode. 2) just the one number is linked to itself and redials until connected. Beeps continuously until stopped with any key. 3) using a slash (/) will beep only o below. The same program is now equally effective on either mainframes with logon messages or RCPM systems that expect some user-typed characters to commence the operation. ---------------------------------- AUTO-LINKING PHONE NUMBERS If thence when connected and then automatically go directly to terminal mode - this is useful where some mainframes such as IBM and UNIX send a logon note assuming you are already able to copy as soon as connected. 4) just the one number is li number you want to dial is busy, you would like to have it automatically redialed until it answers. However, you might like to call any of a group of numbers and be happy to take whichever one first becomes available. Auto-linking allows a group of nnked to itself and redials until connected. Beeps only once and goes to terminal mode. 5) illustrates how one number can be given top priority. 6) system used previously - if connected on first try, beeps one time and jumps directly to tumbers to be listed and they are then continuously dialed one after the other, until one is available. MDM740 permits from 1-32 numbers to be linked together in any way. There are two options: B>>COMMAND: CAL A,D,R,3,Z 1) B>>COMerminal mode. If no connection, asks the operator if he wants to try again or try continuous- ly until a connected is made - at which time it beeps until a key is depressed. ---------------------------------- ADDITIONAL CHANGES TO MDM74MAND: CAL F, 2) B>>COMMAND: CAL A/D/R/3/Z 3) B>>COMMAND: CAL F/ 4) B>>COMMAND: CAL A,D,A,R,A,3,A,Z 5) B>>COMMAND: CAL F 6) 1) using a comma (,) will beep continuously when connected to the fir0 a) If the disk filled while in the terminal mode and copying to disk, the FCB file name was being closed instead of the FCB3 file name. That has been fixed. (It must have rarely occured as has been that way for several years. Now it can'"  t happen.) The original system was developed for normal file transfer and this oversight was never noticed. b) The command line backspace has been fixed - that dates back to MODEM7 days. If a CTL-character was accidently typed, and you bacort. Each attempt now has its own line - this seemed more appropriate when using linking, plus looks better with the messages added. g) Several other quite trivial changes such as adding a copyright notice, modest change in the menu when diskspaced, the cursor would move, frequently moving "too far left". Fixed now for normal operation. c) Several changes suggested by Ron Fowler and Bob Plouffe for batch mode transfer when using BYE and checksum operation. d) Problem with playing the function key intercept character, etc. (An ESC showed as ^[ previously.) NOTE: ALL NORMAL OVERLAYS WILL WORK ON MDM740. SPECIAL OVERLAYS THAT ARE VERSION DEPENDENT THAT WERE USED WITH MDM730 WILL WORK ON MDM740. THOSE the alternate long distance dialing (Sprint, MCI, etc.) fixed. Added a short delay between the digits in a phone number when sent to the modem to allow the alternate dialing systems to work properly. (Previously a problem on many modems.) (PMMI mSPECIAL ONES (SUCH AS FOR THE MICROMODEM, NOVATION, OSBORNE COMM-PAC), ETC. WILL NOT OFFER AUTO- LINKING UNLESS FURTHER MODIFIED. ---------------------------------- IF ',' OR '/' ARE NOT SUITABLE: We use the comma and the slash for odems not affected.) e) Ringback fixed to work properly whether hand entered numbers or from the main table via a single character. Of interest mostly to PMMI users, although some intelligent modems can detect rings when dialing and can calldelimiters on auto-linking. If you to need to use the comma to get out of the local exchange, you can change either of the delimiters to something different: 04FD 2F ASCII / (slash) 0502 2C ASCII , (comma) ---------------------- ringback numbers. (Are there are such things still in existence?) f) Those using autodial will no longer see any +++ ATH ATD etc. Instead you will see messages (Busy for Anchor), No Connect, On Line, etc. when connected. An error prints Ab------------ PATCH TO GO TO TERMINAL MODE QUICKER: If going directly to terminal mode and it still takes too long to adequately receive signon messages from IBM or UNIX mainframes, try one of the following two changes: MOD1 067F 06 02 #  CD to C3 9B 06 069F C2 7E 19 to C2 18 16 06A6 CA 7E 19 to CA 18 16 or MOD2 0966 CD 83 01 to C3 18 16 ---------------------------------- TO EXIT 'CAL' MORE QUICKLY If it seems to take too long tot, and you do not use secret passwords which are not echoed, you can use this change: 1E6D CD 8C 01 to 47 06 01 1E70 DC 8C 01 to CD D4 28 This will wait up to one full second for the character to be echoed back and should be q exit the table of telephone numbers with a simple 'return' check the following byte: 04F4 91 to 9D ---------------------------------- PATCH TO SLOW THE FUNCTION KEYS: Currently the function keys send a character and wait for an echouite satisfactory on even the slowest systems. (We used this originally, before some people started using the function keys for secret passwords, such as signing on to Compuserve, etc.) ---------------------------------- PATCH TO NOT SHOW "SPRINT" N. Since some people use 1-2 of the keys for secret passwords for mainframe use (where the characters are not echoed back), there has to be a com- promise between the length of time you are willing to wait for the echo character to be returned. NormallUMBERS: If for some reason you do not wish to see the alternate long dis- tance dialing numbers, etc., make this change: 07FB CD 9D 2B to 00 00 00 0818 CD 9D 2B to 00 00 00 ---------------------------------- PATCH TO "UNDy it is returned very shortly after it is sent but on some systems it may take longer. It is currently set to wait a maximum of 200 milliseconds. (A normal character takes 33 milli- seconds at 300 baud). If this is too slow and takes too long to submO-J" In past years when copying a file, you needed a lot of characters on the command line when using MODEM7. That program was explicity for use with the PMMI S-100 modem. Times change and so have modems. As recently as a year or so ago, even wit your secret password try this change: 1E6D CD 8C 01 to 7C 7C 7C If either this or the original setting is too fast, you will drop some characters from showing on the CRT under normal use. If the origi- nal setting is still too fasithout a PMMI modem you had to say: B>>COMMAND: RCT to receive a file with CRC and then jump to terminal mode when finished. If working modem to modem, only one person could do this, the other had to be in echo mode and he had to wait until the$   file was finished and at that time say: B>>COMMAND: E to go to echo so the two of you could talk via the keyboard and discuss the name of the next file to be sent, etc. What a nuisance. That has been fixed so now the person receiving the fiplacate those who want to return automatically to the command mode instead of terminal mode, there is now "RJ" or "SJ". (Of course you can easily type a CTL-E if you want to go from terminal mode to command mode after the transfer is done.) HOWEVERle says: B>>COMMAND: R and this assumes CRC protocol and will automatically return to terminal mode upon file completion. This allows him to select "E" or "T" or "L" originally. This has never been possible prior to MDM730. It is one of the, there seem to a few die-hards who are so used to the "RT" and "ST" they don't care for the "R" or "S", so here is how to "UNDO-J" to return to the older method requiring "RT" or "ST" to go to terminal mode upon file completio finest features recently added, as no "RT" or "ST" is needed. This gives several advantages. Allows automatic and simple use of modem-to-modem between two systems. As soon as you see the transfer is done, either party can start typing without n. This mod defeates the useful feture added in MDM730, but if you insist, here it is: 2AFB CA to C2 4952 4A to 54 495F 4A to 54 ---------------------------------- SUMMARY: I am CONFIDENT that using the linking method saying "are you copying this now?" (Standard query prior to MDM730.) It also gives a standard for- mat since when using XMODEM on RCPMs you only say "R" or "S" for normal CRC use - now you have the same commands for MDM740. Finally the more advancedjust one time will have you wondering why it was never offered "years ago". My excuse is I always hand-dialed the Bell 212A modem until I recently got the Racal- Vadic and saw how simple it was to add auto-linking. Now I use it all the time, even on  RCPM systems now use the XMODEM90 series, which tell you how long you have been on the system as soon as the file transfer is done. You can see this with the older programs when using "RT" but it is now automatic with only the standard "R". To a single number. For example to call Compuserve I have two numbers. The one is usually busy but is local and the second is seldom busy but is weaker. I use this: B>>COMMAND: CAL D/C and it calls my favorite (often busy) number first then tri%  es the second one automatically. - Irv Hoff eldom busy but is weaker. I use this: B>>COMMAND: CAL D/C and it calls my favorite (often busy) number first then tri.045 includes ODMDM730, which is configured for the Osborne 1 Comm-Pac or CTS Knights modem using the MODEM port. OSMDM740 on FOG/UTL.047 may be used with other modems interfaced to the SERIAL RS-232 port, such as a Hayes Smartmodem. Each has auto-dialing, special function keys, and many other features. FOG/UTL.046 provides support programs. Several document files (of type DOC, MSG, NOT, INF, and UPD) are included with the set. If using ODMDM730, refer to ODMDM730.DOC on FOG/UTL.045 and MDM730.DOC on FOG/UTL.046. With OSMDM740, see OSMDM740.DOC on FOG/UTL.047 and MDM740.DOC on FOG/UTL.048. Squeezed assembly language AQM files may be unsqueezed using utilities found on FOG/UTL.003, 004, 014, 031, and 042.  Jim Woolley FOG Disk Librarian June 1984 ssembly language AQM files may be unsqueezed using utilities found on FOG/UTL.003, 004, 014, 031, and 042.  DISK.DOC FOG/UTL.045 thru 047 First Osborne Group (FOG) Utilities Disk FOG/UTL.045 thru 047 and part of 048 contain the latest versions of MDM7, a smart terminal and modem interface program. FOG/UTL&   --> FILE: -FOG/UTL.046 CRC = 00 00 --> FILE: /UTL#046.DOC CRC = 02 A8 --> FILE: M7FNK .COM CRC = 50 7C --> FILE: M7FNK .DOC CRC = EF 26 --> FILE: M7FNK .NOT CRC = 06 89 --> FILE: M7LIB .COM CRC = 12 AE --> FILE: M7LIB .DOC CRC = 27 D9 --> FILE: MDM730 .DOC CRC = A8 E1 --> FILE: MDM730 .MSG CRC = A7 F8 --> FILE: MDM730 .NOT CRC = 58 9B --> FILE: MDM730 .UPD CRC = CD 61 --> FILE: MDM740 .INF CRC = F2 BC --> FILE: MDMLINK .COM CRC = BD A5 --> FILE: MDMLINK .DOC CRC = 3E 34 ---------------------> SUM OF CRCS = E8 C4 T CRC = 58 9B --> FILE: MDM730 .UPD CRC = CD 61 --> FILE: MDM740 .INF CRC = F2 BC --> FILE: MDMLINK .COM CRC ='