30 Dec
1999
30 Dec
'99
9:53 a.m.
Well ... that i8089 has to be a slave processor to something else.
The notion of CP/M for something other than the "BIG-3" i.e. 8080/8085/Z-80,
seems unnatural to me. I you can find an OS that actually uses that i8089,
I'll be surprised, but really interested. I've got one on an Intel iSBC215
"Versatile Hard Disk Controller" intended for goodness knows what, which I
mistakenly bought back in the early '80's, thinking it would do something
"wonderful" and worthy of study since it was so expensive. -Not so! -
The 11-bit bit banks in those memories are halves of 22-bit words which are
SECDED compatible for 16-bit words of data. Intel made a chipset to
accomplish just that and it's probably the set on your board(s).
Dick
-----Original Message-----
From: Joe <rigdonj(a)intellistar.net>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Thursday, December 30, 1999 4:35 PM
Subject: 8089 was Re: Hyperion Passport, Apricot, Convergent Technologies
workSlate,
At 10:04 PM 12/30/99 +0000, you wrote:
>
a strange machine -- one of the few MS-DOS boxes
to use an 8089 I/O
coprocessor (which I why I got interested in it -- nice chip).
Hi Tony, I have an 8089 in a CPM machine but I haven't been able to find
out much about that chip. What can you tell me about it?
FWIW the same machine has ECC memory controller in it too but I don't
remember it's number. Memory is in banks of 11 ICs!
Joe