chenmel at earthlink.net
Sun Nov 13 18:11:13 CST 2005
On Sun, 13 Nov 2005 17:42:02 -0500
Allison <ajp166 at bellatlantic.net> wrote:
> >Subject: semi-homemade micro
> > From: compoobah at valleyimplants.com
> > Date: Sun, 13 Nov 2005 11:22:23 -0600
> > To: <cctalk at classiccmp.org>
> >All the talk about building a mini from TTL got me thinking about homebuild
> >micros, and what one would look like if I decided to build one
> >(been playing with my IMSAI, too, which probably accounts for some of it)
> Using RTF??
> >RISC would be out, due to difficulty of assembly coding,
> >and 8086 seems a bit dull.
> >Z-8000, TMS9900, and RCA1802 seem unavailable, and 6120 doesn't
> >have many registers.=0D=0A
> The 1802s are available as is the 6120 (spare time gizmos has kitted both).
> (Harris makes the 1802 and 6120.) old 1802 can be salvaged from EFjohnson
> made VHF mobile radios of early 80s vintage and 6120s from defunct
(echoing a sentiment expressed here earlier) Perfectly good DECmateIIs??
I have 6100s, too, if you want a scaled back version. The 6100 is a great 'easy' first processor to use- all static CMOS with very lax timing requirements for the clock signal. 12 bits, though. And, of course, the PDP-8 instruction set.
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