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<DIV><FONT face=Arial size=2>PDP-8 some used Flip Chips, basic logic elements on
a plug-in card. If I remember correctly PDP-8 used the Omnibus. PDP-8S was
painfully slow. It had a one bit accumulator.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>PDP-11 used Unibus or Q-Bus.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>S-100 bus not well thought out. It has two
unidirectional data buses, for example.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>680 probably did not have S-100 bus, the 6800 has
different bus signals than the 8080. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I had the first Imsai 8080 in the Pacific
Northwest. A friend has it nw.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Good luck finding any of this old stuff in working
condition.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV>Take care,<BR>John</DIV>
<DIV> </DIV>
<DIV><A href="http://www.sound-photo.com">www.sound-photo.com</A><BR>47-30-39.02
N, 122-09-51.75 W, elev 440'</DIV>
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style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=rykhaard@gmail.com href="mailto:rykhaard@gmail.com">Rykhaard
D.A.M.I.A.N.</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=synth-diy@dropmix.xs4all.nl
href="mailto:synth-diy@dropmix.xs4all.nl">synth-diy</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, December 01, 2005 12:21
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [sdiy] Here's an odd search I'm
on - S-100 bus systems ......</DIV>
<DIV><BR></DIV>For the past couple of months, I've remembered seeing the 1975
January issue of Popular Electronics magazine, featuring the 'home computer'
origin - the Altair 8800 system. A panel full of switches with
individual LEDs for programming the actual software by, in BITS. :O
<BR><BR>Oddly - for the past couple of months - I thought that such a system
would be wonderful, built into a modular for controlling my clocks and
sequencers, that are coming. ;)<BR><BR>Now - does ANYone out there know of the
availability of any: <BR><BR>Altair 8800 computers<BR>Imsai 680 series
computers (and THEY are back at <A
href="http://www.imsai.net">http://www.imsai.net</A> :) :) )<BR>Digital PDP-8,
or PDP-7 computers<BR><BR>?? If I recall correctly, they're all S-100
buss systems, that can be configured in a mindbendlingly HUGE # of ways.
<BR>Yes - it's a primitive way of programming, but - the character it would
add to my machine. ;) The 30 year old desire for such a system has
re-emerged. ;) LOL<BR><BR>If anyone knows of any S-100 buss modules /
parts / computers available, please let me know. :) The search is on.
:D <BR>D.A.M.I.A.N. (my new modular) will love it! Haha. The
marriage of electronics and wood. Ahhhhhhhh. :D ;) <BR clear=all><BR>--
<BR>Take care,<BR>Warmth and Peace,<BR>Ryk<BR><A
href="http://www.geocities.com/dolphinicus2003/damian.html">http://www.geocities.com/dolphinicus2003/damian.html</A>
- old webpage of my new modular synthesizer, D.A.M.I.A.N. :)<BR><A
href="http://deathlehem.bravehost.com/damian.html">http://deathlehem.bravehost.com/damian.html</A>
- new webpage that I'm moving the old one to ;) (still very new. Much more
info to be moved into it.)<BR></BLOCKQUOTE></BODY></HTML>