1 Oct
2007
1 Oct
'07
3:24 p.m.
Hi there folks. I just got a sweet NS LCDS (low cost dev system) with
a SC/MP II processor card and nice set of docs on the chip itself, the
lcds,appnotes,and assembly programming It looks pretty easy to add
more than one scamp to the same bus and I was wondering if there are
I rememebr an article in 'Computing Today' magazine _many_ years ago, I
would guess around 1980. It was to add a second SC/MP to the Science of
Cambridge MK14, so that you could, for example, run the monitor program
on one chip and a user program on the other.
From what I remember, you ended up soldering the 2
SC/MP on top of each
other with a couple of pins bent out and not directly
conencted. There
was a bit of scrossed-over wiring to get the arbitration chain right, and
a swich to disable the second processor wired to on of the pins. That was
about it. No otehr chips were involved.
-tony