<I doubt that any of the old stuff I have, much of which, incidentally is
<older than the 21-year-old to which you referred, will run at that 10MHz
It's not as old as the altair or some of the other goodies like the MDS-800
that was part of the VT100 development. What makes it significant is it's
still in use!
<rate, though I once used an ordinary Z-80A at 12 MHz with a BUNCH of 2147'
<(that's power-hungry, basement-heating, fast, static RAM). Unfortunately,
Yep, used them also, 2167s (16kx1 45ns) were available to me and they were
nicer.
<almost no peripherals would talk to it without half a dozen or so
<wait-states. That was in a hand-wired application and not in an S-100,
<where, although you can interface the processor, RAM, and ROM with just a
<gate or two, the bus interface takes about a hundred. (not really, but quit
<a few!)
On a good day about 14 each board.
<If I go the route of hand-wiring something for the S-100, I'll probably us
<one of the WD1002-series bridge controllers I still have lying about. I
They work well or the old ISA-8bit controllers.
<About ten years ago, Someone gave me several of the XCOMP STS board pairs,
<but tuned for 8" rather than 5.25" drives' data rate. I imagine they spen
<a lot of time in someone's desk drawer, in order to keep the boss from
<learning he'd paid for yet another item they couldn't use. Those might be
<interesting to try out.
They may be interesting if the caps havent died of old age.
Allison
Received on Thu Apr 01 1999 - 20:39:23 BST