Wellll.... it might have an effect on some future bankswitching hardware on
which your program might be run.
For example, the Krokodile cartridge does bankswitching based on writes to
ROM... so I wouldn't assume that writes to ROM will always have no effect!
Safer, I think, to do it another way. We *really* need all of this in a
wiki -- any volunteers to host one?
----- Original Message -----
From: "Paul Slocum" <paul-stella@xxxxxxxxxxxxxx>
To: <stella@xxxxxxxxxxx>
Sent: Thursday, April 15, 2004 3:41 PM
Subject: Re: [stella] A tiny tip
>
> >Not sure if this has come up here before, but I just discovered it. To
> >waste an odd number of cycles, we usually use the unofficial instruction
> >NOP $00. Exactly the same effect (3 cycle delay, no registers or flags
> >affected) can be achieved legally (using one more byte of ROM) by doing:
>
> I just use STA $2D which is 2 bytes and has no effect on the 2600. I
> compiled a lot of mine and others' ideas for wasting cycles in that guide
I
> was working on.
>
> -paul
>
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