sch@linus.UUCP (Stephen C. Hemminger) (07/27/83)
TOPIC : MODEM711 PHONE MODEM GENERAL INTEREST DATA
FROM : IRV HOFF W6FFC
DATE : 01 JULY 83
MDM711 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.
Overlay files are included in MDM711.LBR for Apple, Datapoint, NEC,
Heath H89, Kaypro, Morrow, Osborne, PMMI, Televideo, Xerox and Zenith.
There is also a "general purpose" overlay to readly adapt to other sys-
tems not mentioned.
The MDM711.UPD file lists the most recent changes that have been
added to the program. This is in the MDM711.LBR group. There are 13
overlay files for various computers and one additional file for easily
changing the phone number library. MDM711.IQF 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 circum-
stances 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 three files from that library group:
MDM711H8.AQM (Heath overlay file)
MDM711.COM (Master object code, ready to use for PMMI)
MDM711.DQC (Squeezed instruction guide)
MDM711NM.AQM (to easily change the phone number library
if using the Smartmodem or Robotics)
and perhaps the MDM711.UQD update file:
You would unsqueeze MDM711H8.AQM, edit the options if not set the
way you prefer, then assemble it (ASM.COM is fine). Refer to the in-
structions in the overlay file to combine the MDM711.COM file with the
MDM711H8.HEX file you just got when assembling MDM711H8.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
MDM711.DOC 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.
========================================================================
If you have never downloaded a particular file from a library
group, you can do it this way: Use LDIR to see what is in the
library:
B>LDIR MDM711 <ret> shows contents of the .LBR group
B>LTYPE MDM711 MDM711.UQD types the MDM711.UQD file for your inspection
B>XMODEM L MDM711 MDM711.COM downloads the .COM file only
- Irv Hoff
--
Stephen Hemminger, Mitre Corp. Bedford MA
{allegra,genrad,ihnp4, utzoo}!linus!sch (UUCP)
linus!sch@mitre-bedford (ARPA)