[sebhc] list archive and a specific question

steve shumaker shumaker at att.net
Wed Jul 6 17:33:14 CDT 2005

One of the early 80's S100 books had a series of "notional" (for lack of a 
better term) interface circuits connecting the S100 to other busses 
available at the time.   The H8 bus was included there.   Don't recall 
details but I have the book and could copy the appropriate section if 
you're interested in going down the path.

steve shumaker

At 02:24 PM 7/6/2005 -0700, you wrote:
>  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
> >
> >--
> >Delivered by the SEBHC Mailing List
> >
> >
> >--
> >Delivered by the SEBHC Mailing List
> >
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