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Subject: Re: Re: [stella] DASM news From: "Andrew Davie" <atari2600@xxxxxxxxxxxxx> Date: Mon, 24 Mar 2003 23:46:26 +1100 |
We can't just use the opcode... the address is important, too - we never
know what the programmer may be using it for, so the value *must* be
specifiable. So whatever we choose, it's going to be OPCODE address. Given
that we have to do that, it makes sense to give immediate eyeball
understanding to what the opcode *is*. If it's a NOP, *call* it a NOP.
How about...
NOP.b 0 ; a zero-page NOP
NOP.w 0 ; an absolute NOP
NOP 0 ; a normal NOP
the .b and .w extensions are familiar syntax, anyway.
If somebody wants to override these with macros - or we could have standard
macros, too - then, fine.
But they're still NOPs. We should probably stick as much as possible with
the already-chosen names in the illegal opcode documentation that already
exists.
Cheers
A
----- Original Message -----
From: <cybergoth@xxxxxxxx>
To: <stella@xxxxxxxxxxx>
Sent: Monday, March 24, 2003 11:28 PM
Subject: Aw: Re: [stella] DASM news
> Hi there!
>
> > BTW: ZOP?
> > What does the Z stand for? Zeropage? Don't forget NOP abs etc. then.
>
> Uhm... yes, certainly the zeropage. What for should "NOP abs" be needed?
>
> If you need a four cycle wait with two bytes you could as well use two
"stock" NOPs ;-)
>
> Greetings,
> Manuel
>
>
>
>
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