13 Nov
2005
13 Nov
'05
4:11 p.m.
On Sun, 13 Nov 2005 17:42:02 -0500
Allison <ajp166 at bellatlantic.net> wrote:
(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.
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)
=0D=0A
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
DECmateII/IIIs.