Re: [cc65] Customization of cc65 for new targets

From: Karri Kaksonen <>
Date: 2010-02-18 05:53:23
Shawn Jefferson wrote:
> I don't believe that is true for all targets.  The Atari 8-bit has a 
> zeropage size of $80 and the Atari Lynx has much more.  At least, I 
> think that what you are referring to is the amount of zeropage space 
> that is safe for cc65 to use, as listed in the linker config file?  
> Where zeropage space starts and the size of it is going to very 
> platform dependent, and that should probably be pointed out in the 
> document (which I haven't had a chance to read yet, sorry!)
> Shawn

The Atari Lynx has all zeropage 0x00 - 0xff available for cc65. Not a 
single byte is needed for anything else. But the cc65 itself uses up a 
few bytes in crt0.s, file access etc. In the Lynx case the bytes are 
taken from top of zero page memory 0xEA-0xFF I think.


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Received on Thu Feb 18 05:53:34 2010

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