Retro computing and gaming, sci-fi books, tv and movies and other geeky stuff.

Home » Archive » net.micro.cpm » report on macro-tech board (80286/z80) - of interest to 8085/8088 users
Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend 
Return to the default flat view Create a new topic Submit Reply
report on macro-tech board (80286/z80) - of interest to 8085/8088 users [message #112254] Mon, 16 September 2013 13:41
Herb Lin is currently offline  Herb Lin
Messages: 5
Registered: June 2013
Junior Member
Message-ID: <6811@brl-tgr.ARPA>
Date: Fri, 28-Dec-84 11:53:15 EST
Article-I.D.: brl-tgr.6811
Posted: Fri Dec 28 11:53:15 1984
Date-Received: Sat, 29-Dec-84 23:13:45 EST
Sender: news@brl-tgr.ARPA
Organization: Ballistic Research Lab
Lines: 31

a report to netland about the Macrotech dual processor board,
 (with an 80286 (10 MHz) and a Z-80 (8 MHz) advertised as a "drop in
replacement" for the Compupro dual processor board (8085/8088).

It isn't.

No doubt it does adequately with certain configurations, but with
mine, it does not.  The symptom of difficulty is that when I boot my
system (a Compupro System 8/16 C) running MPM 8-16 (Gifford Computer
Systems), the system does not boot properly (but only intermittently).
It sometimes takes me a few pushes of the reset button to even start
the system; then, sometimes, the system seems unable to find the right
INIT files.  Sometimes, it finds the files, but then branches off into
some strange part of the code.  It has never entirely failed to work,
and these troubles seem to happen only when I am doing my boot.  Once
the system has booted properly, it appears to operate properly after

The problem has been diagnosed as an interaction problem between the
processor board and my hard disk controller board, a Morrow HDCA, that
probably results from timing problems.

Gifford has offered to refund in full the cost of the dual processor
board; they have also suggested that I upgrade my hard disk controller
to a COMPUPRO Disk 2 board.  They have explicitly refused to develop a
fix to my problem.

Since I would really like Z-80 capability for my 8 bit processor, can
anyone make suggestions to me?

[Message index]
Read Message
Previous Topic: PAT700V2.ASM revised patches for MODM700
Next Topic: PAT700V1.ASM bugs?
Goto Forum:

-=] Back to Top [=-
[ Syndicate this forum (XML) ] [ RSS ] [ PDF ]

Current Time: Tue Nov 28 14:25:57 EST 2023

Total time taken to generate the page: 0.00493 seconds