I see posting an image here is useless,
So here's a link:
http://forums.qrz.com/index.php?goto/post&id=3832343#post-3832343
So here's a link:
http://forums.qrz.com/index.php?goto/post&id=3832343#post-3832343
Very interesting read.
I recently got into HAM radio, and our club apparently have two 8008-1's in the legacy chip shelf. While the Mark-8 is very early design, and uses certain chips that's difficult to come by nowdays, I was thinking about the posibility to design an 8008 computer using more modern and readily available TTL components.
I do notice that many of the early 8008 computers use a whole bunch of dual not gates for propagation delays on the CPU board, while a more recent design; http://www.8008chron.com/ , gets away with only a GAL, some 74LS245/74LS373 (for demuxing/latching the bus) and some flip-flops. The only documented case I have seen where delays have been needed with 80's TTL speed parts and the 8008 is where the /RD and /WR signals gets to the RAM chips too fast.
I see posting an image here is useless, View attachment 30926
So here's a link:
http://forums.qrz.com/index.php?goto/post&id=3832343#post-3832343