[sebhc] list archive and a specific question

Dwight K. Elvey dwight.elvey at amd.com
Wed Jul 6 16:24:29 CDT 2005

 You'd most likely just need to add an address decoder.
I'm not sure if the periphery controls would match up to
the H8's ( you know things like selects and motor controls ).
If you write your own drivers, this wouldn't be an issue.
 Does anyone know if the Z100's controller was compatible
with a standard XT floppy controller from a software point
of view? If so, I have code that I wrote for a NC4000
to use that board. I also didn't use DMA but the NC4000
running at 4Mhz had no issue keeping up ( in fact it was
too fast for normal handshake without some delays ).

>From: "Barry Watzman" <Watzman at neo.rr.com>
>Possible?  Yes.  Easy?  Probably not.  There are some pretty major
>differences in the bus, although not all of them matter in this case (you
>are not trying to use DMA, for example).
>-----Original Message-----
>From: sebhc-bounces at sebhc.org [mailto:sebhc-bounces at sebhc.org] On Behalf Of
>Lee Hart
>Sent: Wednesday, July 06, 2005 5:52 PM
>To: sebhc at sebhc.org
>Subject: Re: [sebhc] list archive and a specific question
>Barry Watzman wrote:
>> On the WD support chips, although I hate to suggest this, if a Z-100
>> controller becomes available (or even, for that matter, an entire
>> Z-100), it has those same chips, socketed, and you could pull them
>> to build up the 89-37.
>I know. I have a couple dead Z-100s, and that's where the WD chips in
>the Z89-37 I built came from. Forgive me father, for I have sinned.
>But your comments sparked a (mad?) idea. The S-100 size Z-100 card is
>physically small enough to fit in the H8. Do you suppose it might be
>possible to build an H8-to-S100 adapter? Could a Z-100's floppy card be
>used pretty much as-is in an H8 to provide soft-sector support?
>Ring the bells that you can ring
>Forget your perfect offering
>There is a crack in everything
>That's how the light gets in
>	-- Leonard Cohen, from "Anthem"
>Lee A. Hart, 814 8th Ave N, Sartell MN 56377, leeahart_at_earthlink.net
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