Date   : Fri, 08 Apr 1983 11:56:00 PST (Friday)
From   : MMOON.ES@parc-maxc.arpa
Subject: MODEM7XX

I have acquired a D. C. Hayes 80-103 S-100 plug-in modem board. The hardware
seems to work fine, but the software leaves a lot to be desired.  In order to
rtemedy the situation,I managed to obtain a copy of CP/MUG's  public domain
distribution vol. 79, which contains MODEM741.ASM, MODEM7.DOC,
&MODEM7.LIB, & MODEM7.SET.  The doc files mention nothing about equates
and/or modifications to MODEM741 for this board.  Now, being a reasonably
competent hacker, I can puzzle out the various and assorted status bits,
command
bytes, etc., but beyond that things get real sticky.  My questions are:

1) The MODEM741.ASM file is set up *only* for the PMMI modem, as
delivered.  I have never seen this animal, & some differences stand out as
obious, i.e., the PMMI board has an extra modem control port, MODCTRLP2, I
believe.  This is easy enough to remove, but if I do, how do I know where to
redistribute the functions of this port over to the D. C. Hayes' single
control port
without reading the entire 60 odd pages of code in the source file for
references. 
That is an imposing task for anyone coming into this cold.

2) If I can avoid the above by finding somone who has already set up
MODEM7XX to work with this board, I would really appreciate a pointer or an
upload that is accessable tome here at work (XEROX, El Segundo, Ca.).  Anybody
out there got the right stuff? 

3)  If I get the equates for an earlier version of MODEM7XX, will they be all
that is needed for MODEM705/6?

To anyone not in possesstion of the 80-103 board, this one predates the
Micromodem 100, Its base address is selectable, & it generates its own
clock.  The
ports are BASE (modem data transfer port), BASE+1 (modem status port, i. e.,
TBE, OE, etc.) & modem control (baudrate, character length, no. of stop bits, &
parity.

               Thanx in advance.

               --MOON