Author: Tom Kerrigan
Date: 19:28:33 03/09/00
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On March 09, 2000 at 22:18:12, Eugene Nalimov wrote: >Is 8080 16-bit processor? It has 3 register pairs, each 16-bit wise, and there >were operations that worked at those - addition, load, store. And z80 adds more >16-bit instructions - e.g subtraction with carry. > >On 68000 32-bit operations worked much slower than 16-bit operations, even for >data on registers. > >Eugene How wide was the register bus in the 8080? My guess is 8 bits. I believe the register bus in the 68000 was 32. I don't think instruction speed has a place in determining the "bitiness" of a processor. -Tom
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