Peter L. Peres wrote:
>
>
> decf    mid, F
> decf    mid, F
> decfsz  low, F
> incf    mid, F
> incfsz  mid, F
> decf    high, F
>
> 6 T cycles, 6 words run time (constant). I think it's optimal.
>
> Peter

Ok. Initial conditions are : high=0x03 , mid=0x02 , low = 0x01.

high    mid     low
0x03    0x01    0x01
0x03    0x00    0x01
0x03    0x00    0x00
0x02    0x01    0x00

Result: high=0x02 , mid = 0x01 , low = 0x00.
Hmm.. Very interesting 3 byte decrementing counter :)
Which arithmetic base it used ? Is it Fields of Galua ? :)))

WBR Dmitry.