Date   : Thu, 28 Oct 1982 20:43:50 EST (Thu)
From   : Ben Goldfarb <goldfarb.ucf-cs@Udel-Relay>
Subject: Godbout 8085/8088

I recently purchased a Godbout 8085/8088 CPU and to my chagrin it
doesn't work very well.  I can barely get the 8085 to run at 2 MHz.

My system consists of an Imsai 8080, 128K of CCS dynamic memory, a Jade
Double-D FDC, and a CCS 4-port serial I/O card.  I have followed
Godbout's instructions regarding jumper and dip switch options, paying
special attention to those that apply to the Imsai 8080.  The strangest
thing that the CPU does is drop bits 0 and 7 when reading memory.  The
most flagrant case of this occurs when reading nonexistent memory with,
say, DDT.  Instead of all FF's, I get all 7E's!  Particularly
disconcerting as well is the lack of ability to execute an EI (FB --
has both end bits) since my BIOS is interrupt-driven.  Very weird.
At 6 MHz, nothing at all works; this was more or less anticipated.

I have shifted gears back to the original IMS 8080 card, which I'd like
to chuck soon.  Has anyone had similar problems with the 8085/8088 and
what are your experiences with Godbout's Tech. support in cases like
this (i.e., those that are beyond the capability of my "local dealer's"
technical knowledge)?  [I notice that Godbout tries to keep its phone
number out of manuals and other user documents.]
                                               
                                       Ben Goldfarb ARPA:
                                       goldfarb.ucf-cs@Udel-Relay
                                       uucp: ...!duke!ucf-cs!goldfarb