7 May
2010
7 May
'10
2:30 p.m.
Trying to find a universal way of classifying processors seems to me
to be an exercise in folly, akin to angels dancing on the head of a
pin.
The PB-250 had a one-bit data bus and a 22 bit word length.
A PPU on a CDC 6000 series machine has 12-bit words but an 18-bit
accumulator.
The CDC STAR had 64-bit registers, but a 644-bit (IIRC) data bus.
The eZ80 has an 8-bit data bus, 24-bit registers with a 24-bit
addressing space and can performa a 16x16 multiply with a 32-bit
product, yet it runs Z80 code.
--Chuck