GAWD! The 8080 data sheet! I wonder if my archives go back that far . . .
I know the signals are modeled after the 8080, but are they all 8080
signals? I guess it's no wonder people liked the 8085, with its silly muxed
address bus better than the 8080 . . .
Soooo . . . the signals were named the same also, eh? pSYNC, /pWR, sMEMR,
etc???
Is there a web site which has details on the 8080=>'696 standard decision
tree?
Dick
-----Original Message-----
From: Allison J Parent <allisonp_at_world.std.com>
To: Discussion re-collecting of classic computers
<classiccmp_at_u.washington.edu>
Date: Sunday, March 28, 1999 8:12 PM
Subject: Re: Rebirth of IMSAI
><I've been after the original spec's for the IMSAI pre-1977 bus timing, etc
><in case anyone has that data in shareable form.
>
>Read the 8080 data sheet for the part running a 2mhz clock... the rest is
>obvious to the point of painful.
>
><I've found the schematic for my IMSAI PIO-6 board but only half the manual
><fortunately with the schematic, of the PIO-4. I don't seem to have any bu
><timing informtion, though.
>
>Thre wasn't any bus timing info published. The S100 bus was based on
>the raw 8080 timing. All the bus was is the buffered 8080 signals plus a
>few handy ones. A quick look at the processor board is everything.
>
>Allison
>
Received on Sun Mar 28 1999 - 22:13:56 BST