w8sdz%brl@sri-unix.UUCP (12/15/83)
From: Keith Petersen <w8sdz@brl>
Tom Bering has just released MDM715, the latest version of MODEM7.
Below is a complete history of the updates of MDM7xx so readers
can see the significant changes that have occured recently. An
announcement of the files available from SIMTEL20 will be made in
a separate message.
MDM715 supports Auto-Dialing and automatic continuous redialing for
the following modems:
a) PMMI 103 plug-in S-100 modem
b) Hayes Smartmodem 300 or 1200
c) U.S. Robotics 300/1200 modem
12/11/83 Expanded Hayes redial options. Eliminated scrolling
of CRT display during redial. Added clue to abort CAL.
Eliminated duplicate 'CONNECT' msg on CRT (from Hayes).
Eliminated display of ALT LD access codes. Faster redial
MDM715 for Hayes. Resets Hayes (ATZ) on BYE command. Finished
clean-up of comments missed by NEAT. Shortened 3 LTR
command help screen by one line. New NUMBLIB ORG 0D00.
- Tom Bering
11/11/83 Releasing full source code, including all comments. Updated
the telephone library for currently available RCPM systems.
MDM714 LF not automatically added in "L" half duplex mode now. Can
be added via "TLF" command if needed. Renamed the overlays
to allow them to remain independent of further updates.
Example: M7AP-1.ASM, M7GP-1.ASM, M7PC-1.ASM, etc. Enjoy
- Irv Hoff
10/10/83 Fixed old PMMI bug - changed line in NXTOPT0 area which now
reads STA CMDBUF+4 (was +5). This caused the PMMI modem to
MDM713 flip to answer mode whenever 'CAL' (auto-dial) function was
used. This bug had been around for some time and led to
notices of 'flakey operation' in earlier MODEM7xx programs.
Did some cleanup. - Sigi Kluger
08/01/83 Added two alternate dialing routines such as MCI and SPRINT.
Slight change in batch transfer area. Prevented CTL-Y and
MDM712 CTL-R from outputting to the modem while saving for disk.
Fixed "disk space remaining" to read correctly with CP/M+.
Renamed all overlays to conform with 6-character filename
limit on Compuserve. - Irv Hoff
07/01/83 Changed TERM to allow use of printer port for modem use.
Needed by the Morrow MD and NEC 8001 computers. Changed all
MDM711 overlays to allow overprinting the PMMI parity routines as
the Applecat overlay was not working properly. Removed the
short break tone during disconnect as Smartmodem 1200 were
locking up. (Smartmodem 300 were operating normally.)
- Irv Hoff
06/17/83 At last. Program now has autodialing and auto-continuous
redialing for Hayes Smartmodem 300 or 1200, PMMI 103 modem
MDM710 or U.S.Robotics. After first unsuccessful try, asks if you
want to quit, try once again, or continuously redial. Also
changed the BYE routine to be compatible with systems other
than RCP/M. Now trap 87H and 7H which are sometimes used by
mainframes to signify "do not send any more sectors at this
time". This keeps the original Christensen protocol when
ACKNAK is set YES. (ACKNAK can of course be set to NO if
the results seem preferable to the user. Some problems have
been noticed in batch transfers and modem-to-modem use with
ACKNAK set NO.) - Irv Hoff
05/27/83 Corrected a phone number in the library. Added a CR/LF for
the quiet mode if using batch transfer. Simplified initial-
MDM709 ization at startup. Two minor mods to assist in adding an
overlay for Hayes 300/1200 SmartModem later.
- Irv Hoff
05/15/83 Extensive revisions on many parts of the program. Relocated
most of the PMMI routines near the start to facilitate using
MDM708 the new 300/1200 PMMI board or the Hayes Smartmodem. Some
of the more ambitious changes include:
a) CRC system replaced with the high-speed lookup tables
similar to those used in CHEK15.
b) Separate printer buffer. Can now print regardless of
input speed even when saving for a disk file.
c) Printer buffer and disk buffer each can accept up to
128 characters after an X-OFF to compensate for line-
oriented systems and satellite linking.
d) Saving to disk made far more user-friendly. 'NOL' no
longer used. File automatically closed upon exit.
e) Sector count shown before "ACK" is sent, allowing
high-speed transfers (to 19,200 baud) without errors.
f) Typing BYE on command line or CTL-D in terminal mode
disconnects and returns to CP/M. Also closes any disk
files that may be open. "X" (secondary option) does
the same thing, allowing automatic terminate at com-
pletion of file transfer.
g) Improved the "E" (echo) mode, also half duplex mode.
h) Control characters above ^M not passed to the CRT, an
optional feature.
i) Handling of command line options greatly modernized.
j) For PMMI users, program automatically comes up in
originate mode at default speed. No need to ever say
TO.300 unless a baudrate change is desired.
k) Simlified and changed numerous flags to be consistent
with others.
l) Several improvements in error handling and detection.
Numerous other changes. We attempted to incorporate all the
suggestions forwarded from various users in addition to some
features I wanted myself. - Irv Hoff
01/01/83 First version. Can be assembled with ASM.COM. MDM700 was
selected to commence a new series of version numbers. This
MDM700 can be readily used on data bank systems that limit file
names to a total of 6 characters.
- Irv Hoff
--end--ciaraldi@Rochester.ARPA (12/15/83)
From: Mike Ciaraldi <ciaraldi@Rochester.ARPA> I realize this is a little late to get in MODEM715, but I am not sure if this is a bug or not. I am now running 712, and ocassionally need to use the ^@ key to send a break. This is only needed on one system that answers with Bell 212 protocol but at 300 baud, so I have to send breaks to get a baud-rate change. Using a Hayes Smartmodem, which has lights to show when a character is sent, the light only flashes every SECOND time ^@ is pushed, implying that the break is only sent on every second request. The problem is that the baud-rate changer is so flaky I can't be sure if breaks are really going out or not. Has anyone else seen something like this? Does anyone ever send breaks? Mike Ciaraldi ciaraldi@rochester