15 Nov
2000
15 Nov
'00
5:20 p.m.
ard(a)p850ug1.demon.co.uk (Tony Duell) wrote:
One oddity is the ICL/3 Rivers PEEQ. Although it was often claimed to be
a 16 bit machine (the data bus to memory was 16 bits wide, for example),
the ALU was 20 bits wide _because it was used to calculate addresses_
(this machine had a 20 bit address bus). For that reason, the (rare) PERQ
2T4, with a 24 bit address bus, has a 24 bit ALU (but still a 16 bit
databus).
Hi
As example, my Nicolet has a 20 bit ALU/data bus and a 16 bit
address. I just wish I had the full 64K by 20 core in it :)
As you can see, the numbers can be all over the place.
Dwight