6502/Z80 speed comparison (was MITS 2SIO serial chip?)

From: Bryan Pope <bpope_at_wordstock.com>
Date: Thu Dec 20 12:31:58 2001

>
> Also, if you realy want 'ultimate speed' you have to look at actual Versions.
> close Z80 relatives (like 180) are available up to 32 MHz (I have seen only
> 20s, but well) while actual versions of the classic 6502 and 65816 is able
> to do 14 MHz. Now take in account that a clock ratio of 1:3 to 1:4 for 6502

The 65816 can go up to 20Mhz. It is used in the SuperCPU for the 64 and
128.

> vs. Z80 (*) is a good rule of thump, so a 14 MHz 6502 equals a 42 to 56 MHz
> Z80. Quite a racer ...

Cheers,

Bryan Pope
Received on Thu Dec 20 2001 - 12:31:58 GMT