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- TOPIC : MDM712 PHONE MODEM PROGRAM GENERAL INTEREST DATA
-
- FROM : IRV HOFF W6FFC
-
- DATE : 27 JULY 83
-
-
- MDM712 is the latest in the "MODEM7" telephone modem series. After
- MODEM 7.98, the program became known as MDM700, etc. At that time the
- external macro library was combined into the source code plus other
- changes. Numerous overlay files were added for various computers to
- make the program useful for a large number of different systems. Orig-
- inally it worked only with the PMMI plug-in modem for the S-100 bus. It
- now also supports the Hayes 300 and 1200 and U. S. Robotics modems. It
- is the only modem program that offers auto-dialing and auto-continuous
- redialing for all these modems. It also supports up to two different
- alternate long distance systems such as 'ALLNET', 'MCI' or 'SPRINT'. It
- can also auto-dial for TYNMET, etc.
-
- Overlay files are included for Apple, (several versions), Altos,
- Datapoint 1560, Heath H89, Heath -100 series, Hewlett Packard 125, In-
- terfacer 3/4, Kaypro, Morrow, NEC, Osborne OS-1, Osborne Executive One,
- Otrona, PMMI, Telecon Zorba, Televideo, Xerox and Zenith Z90 and -100
- series. There is also a "general purpose" overlay to readily adapt to
- other systems not mentioned. An additional file makes it simple to
- change the phone number library. Others are being added that may not
- be mentioned in this list.
-
- The MDM712.UPD file lists the most recent changes that have been
- added to the program. MDM712.INF explains what each of the programs is
- for, plus has some comments similar to these, regarding how to use the
- overlays in the easiest manner. Under normal circumstances you would
- have no need for the source code, as the overlays have the beginning of
- the program. This includes all the various options you may select.
-
- Let's say you have a Heath H89, for example. You would wish to get
- (download) the following files:
-
- MDM712.COM (Master object code, ready to use for PMMI)
- M712H8.ASM (Heath overlay file)
- M712NM.ASM (to easily change the phone number library
- if using the Smartmodem or Robotics)
-
- and perhaps MDM712.UPD (update file) and MDM712.DOC (instruction manual):
-
- You would then edit the options in M712H8.ASM if not already set
- the way you prefer, then assemble it (ASM.COM is fine). Refer to the
- instructions in the overlay file to combine the MDM712.COM file with the
- M712H8.HEX file you just got when assembling M712H8.ASM. All this will
- only take a few minutes. It is actually very simple. The program is
- then ready to use. If unfamilar with this type modem program, read the
- MDM712.DOC file and try it out.
-
- 0103H FF for PMMI, 00 if not PMMI
- 0104H FF for Hayes Smartmodem 300 or 1200 or US Robotics
- 0105H 54 for touch-tone dialing or 50 for pulse-dialing
- (only applicable for the Hayes or Robotics)
-
- These bytes are automatically selected when edited into the approp-
- riate overlay.
-
-
- - Irv Hoff
-