Re: [cc65] More on Zero page vars

From: Groepaz <groepaz1gmx.net>
Date: 2009-02-08 17:16:04
On Sonntag 08 Februar 2009, Tachdaun wrote:
> Good. Danke.
> Another one:
>
> in [nes.inc] there are some Zeropage vars defined, which seem to end
> around here:
> [...]
> ppuhi           = $74
> ppulo           = $75
> ppuval          = $76
>
> So, do I have $77 to $FF of zeropage space free to mess around?
> Isn't it reserved or used for some kind of buffering, stack... anything
> like that?
> I defined a zp var at $77 in this file, compiled, .exportzp and
> .importzp'ed it and worked fine from C, but I don't know if I'll mess
> around with the startup code, runtime, library, etc.

i dont remember the details, look at nes.cfg ... i think i have put the zp for 
the runtime at $00 

-- 

http://www.hitmen-console.org    http://magicdisk.untergrund.net
http://www.pokefinder.org        http://ftp.pokefinder.org

Some people, when confronted with a problem, think "I know, I'll use regular 
expressions." Now they have two problems. 
<Jamie Zawinski>

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Received on Sun Feb 8 17:15:30 2009

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