ISA bus throughput

[mbbrutman-cctalk at brutman.com]

Quoting Chris M <chrism3667 at yahoo.com>:

>  You're not saying a modern (internal) ATAPI cd-rom
> (or dvd-rom?) would operate in such a machine with an
> IDE card? I guess I could just try it - had my 5170
> out not hours ago to test my old 80188 based graphics
> card (beeeeep beep beep :( ), but I don't know where
> my IDE card went.

I think it would work.  It just seems out of character for a machine that old. 
But then again, loading everything via 1.2MB floppies was a nightmare yesterday
.  my data transfer machine is a PCjr with 360K floppies, which made things
interesting.  I'll probably put an IDE CD-ROM on it just to make it a little
more useful instead of adding a 3.5" drive.  (Or at least see how far I can get
with that configuration before breaking down and adding the 3.5" drive.)


>  It would be nice to obtain a schematic of one of the
> more primitive IDE cards *whistles*. And wouldn't
> artwork be nice too ;). Would an 8-bit card take the
> place of a 16-bit card in an AT? Presumably yes,
> albeit slower I guess. The Acculogic sIDE/16 or
> something has all discrete logic, save for a pal or
> gal (or 2).

Yes, this would be interesting.  I had never realized that IDE was a superset of
ST506.  Now I'm thinking of all of the old 8 bit machines I have that could use
an IDE hard disk.  I've been trying to graft SCSI cards onto them, but 8 bit
SCSI cards with BIOS aren't exactly common either.