8-bit IDE

From: allisonp_at_world.std.com <(allisonp_at_world.std.com)>
Date: Tue Apr 18 08:21:06 2000

On Mon, 17 Apr 2000, Richard Erlacher wrote:

> Your assumptions, reasoning and conclusions are all quite reasonable,
> Allison. The drive makers might have had a motive to include that mode back

Testing suggests PC and standards in the same breath are good for a laugh
only.

> interface equipment. I've had a lot of stuff sitting for a long time. I'd
> like to verify that it's working before I attack the larger task of
> extracting at least seemingly useful work from the old clunkers.

Thats an advantage I have. I have many s100 and other cpm hardware all
known good and running to work with. Then again thats the reason I have
them so I can use them.

The S100 systems I have a board of my design and it is quite simple in
that it buffers address and supplies the low 4 bits of it, a set of
qualified selects, buffered IO_read IO_write, reset/, clock(2mhz), wait/,
interrupts and a bidirectional 8bit bus. This makes IO projects as
trivial as ISA-8 or STD. All brough out on a 50 pin ribbon (alternate
grounds) as a short 1-2ft cable bus. This matches the Visual1050 bus port
(very similar) and the VT180 board I hack with that as a similar mod.
Makes hardware experiementation easy. This is something I implmented
many years ago.

Allison
Received on Tue Apr 18 2000 - 08:21:06 BST