signed nibble

Ola Fosheim Grøstad ola.fosheim.grostad at gmail.com
Tue Jan 8 11:52:52 UTC 2019


On Tuesday, 8 January 2019 at 10:55:59 UTC, Patrick Schluter 
wrote:
>> The cycle counts for 6502 are pretty easy though as they tend 
>> to be related to the addressing mode and most of them are in 
>> the range 1-5... No instruction for multiplication or 
>> division... Oh the fun...
>
> 2-7 cycles ;-)

There you go, the last one in that series I touched was 6800 in 
1990.

But it kinda make sense, the instructions were not pipelined, so 
even NOP takes 2 cycles... Another world really.




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