Core duo SC/MP?

[Allison]

Tony Duell wrote:
>> 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.

I never saw Computing Today..  However the apnotes and the databook for SC/MP
made it look simple.  Only thing was I had an 8A-500 (Pmos first version)
an 8A-600(Nmos sc/mpII) and the 8072 (third version with NIBBLE in internal 
rom). Turns out that a few inverters sorts it all out and I went for a dual 
processor version and using one cpu to report on the other in a crude debug 
monitor.  I later used the 8a600 as an IO processor for the 8072 nibble chip
as a unique system to explore the useful techniques for multi cpu systems.


Allison