COSMAC ELF,? Built mine back '76.
12 switches, 1 push button, 2 hex digits of led, 256bytes of ram and the 1802, 8 pieces of CMOS logic.
I still pull it out to play.? Runs well on a battery of 8V or more.
Also National SC/MP (both I and II), Texas Inst 9900 in the form of the Technico starter board, 6800D1,
Kim1, TK80, Intersil 6100 Sampler (base PDP-8 in cmos), IMSAI IMP48 (intel8035), Intel SDK85 and
then memory fails me. There is a 6809 in there too.
My favorite is a 16 bitter made from TTL...? I decided I needed to understand how computers
worked at?the gate level. So design and build.? Not very fancy but proved I understood.? Killed
me wirewraping it too. The hard part was getting the carry logic right.? It was sorta PDP-8 /nova
in its origins.?Also proved that once you have a machine... programming happens, mostly by
need as it was unique.??
Allison
