On May 19, 2006, at 1:20 PM, Wouter van Ooijen wrote:

>  I don't think any real '8bit cores' exist any more.
>
For the sake of this discussion, let's define "core size"
based on the registers and the add instruction.  If it has
16bit registers and a 16bit add instruction, it's a 16bit
processor.  32bit registers and add makes it a 32bit processor,
and only 8 bits makes it an 8bit core.  That makes a Z80 an 8
bit core despite the limited double add, the 8086 a 16bit, and
a 68000 a 32bit processor.  That makes the PIC an 8bit core
without question...  Instruction size doesn't really matter.

BillW
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