S100 Computers

Tom Lake

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Aug 26, 2010, 8:09:12 AM8/26/10

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I just bought an assembled Ithaca Audio Z-80 CPU card from S100 Computers.

www.s100computers.com

and am quite pleased with the quality of the board and the care that
went into the assembly. Shipping was also super fast.

I have no connection with the company other than being
a satisfied customer but I just wanted people here to know
(if anyone here doesn't already!) that this place exists
and is certainly worth a look!

Tom Lake

monahanz

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Aug 26, 2010, 3:33:39 PM8/26/10

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Tom, thanks for feedback. However please be award that www.S100Computers.com
is NOT a commercial site for S-100 Boards. The site is for "reading"
about S-100 computes, It has information about many S-100 boards of
the past. It has a section on "MySystem" which describes S-100 Boards
Andrew Lynch and I make for our own use. We make these bare boards
available also (at cost) for experienced users that feel they too
could use them. The site has a Forum for discussions on all things
S-100 related.

The Z80 CPU board you mention is from a section on the site where
other users may wish to sell used S-100 boards and want to get the
word out. Boards like this I have not seen and have no part in. It's
just a posting site for others. Posting is free for any S-100 user.
John

Kenneth Scharf

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Aug 26, 2010, 7:36:52 PM8/26/10

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BTW, I saw this on ebay,
http://cgi.ebay.com/IMSAI-ALTAIR-S-100-Ithaca-Audio-Z80-CPU-S100-Kit-NOS-/220659535793?pt=LH_DefaultDomain_0&hash=item3360554fb1

Same board in kit form.

Kenneth Scharf

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Aug 26, 2010, 7:38:11 PM8/26/10

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And a video card to match....
http://cgi.ebay.com/S-100-Ithaca-Audio-S100-Video-Card-Kit-Altair-Imsai-/220659779806?pt=LH_DefaultDomain_0&hash=item33605908de

Not mine, but someone here might be able to use them....

Prophet10

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Aug 27, 2010, 8:47:09 PM8/27/10

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Well (blush blush) thanks for the heads up on my offerings of the
Ithaca Audio boards. I wound up with the remaining inventory when the
factory went out in 1983 and have stored the parts ever since.

I went through the chips (over 10,000), categorized them all, then
made the kits from them plus new parts for whatever was missing. Of
note is that I put in the better dual wipe sockets that suck in the
chips with thermal cycling instead of the crummy TI sockets that
spread the contacts over time.

Lately I made a little test eprom that goes with the board to exercise
the various pins so you can easily debug it with a scope.
I still have a few more of the Z80s, down to 2 video kits left.

There are a bunch of 6SIOs that I haven't worked up yet, lots of 256k
dram boards, and a few 64k dram boards. I anyone has the docs for the
ISIO board, I would like to make that into kits as well.

Another project currently on the back burner is to restore a DPS-1. I
have almost all components, mainly have to build the front panel up
from blank. I have a bucket of the orange paddle switch tops if anyone
needs some.

Also I would be happy to put up a list of the more interesting chips
here if anyone is interested. Best is to write to my main mail which
is soun...@mail.com

-John King (SoundFarm)

John Crane

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Sep 6, 2010, 7:02:45 PM9/6/10

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For what it's worth, I'll throw in my $0.02 as well....

I've done some business with "sound farm" in the past. Service, product,
and documentation are top notch in every respect. It's like taking a time
machine back to 1976 and getting a new S-100 card in kit form - Only better
becuse all the bugs have been worked out.

-J