[hatari-devel] Another question about cycles

[Miro Kropáček]

Hello,

So, for Falcon, a OR.W D0,D0 gives 0 0 2 4.
>
Yes.

But how does it work for a OR.W D0,(A0) ?

   OR Dn,EA 0 1 3(0/0/1) 4(0/1/1)
+ (An)            1 1 3(1/0/0) 3(1/0/0)
OR Dn,(An) -> 1 2 6(1/0/1) 7(1/1/1)
or.w dn,(an) -> 1 2 10 13 (falcon)


> Should I add the times of the OR.W DO,DO and the time of the (A0) from the
> table ?
> It would be : OR.W D0,(A0)   :  1   1    5   5   ---> Falcon cycles : 1
> 1   7    9  ?
>
Well, I can't tell that for sure but I'd say always try to look for a
special case (like OR Dn,Dn explicitly listed) and if not found, use the
general formula, as I did above.

Same for a OR.W (A0), (A1) ?
> It would be : OR.W (A0), (A1)   :  2   2   8   8   ---> Falcon cycles : 2
>   2   12   14  ?
>
Whoo, whoo! There's no or.w (a0),(a1) instruction :)


> I's enjoy you control my file when it's finished.
>
Please don't take my word as definite, most of the stuff I'm talking here
about is just my educated guess :) Too bad I'm not a hardware guy, I could
measure some stuff then.

-- 
MiKRO / Mystic Bytes
http://mikro.atari.org
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