Re: [cc65] possible error, tertiary on cbm_save return value

From: Ullrich von Bassewitz <uz1musoftware.de>
Date: 2009-08-23 23:34:07
On Sun, Aug 23, 2009 at 11:31:48PM +0200, Groepaz wrote:
> btw that said, a small section in the docs that outline the cc65 calling
> conventions (plus the fact you mention) would be very useful ... i recently
> took the last zoomania release (http://noname.c64.org/csdb/release/?id=74653)
> and looked at it (mostly because onslaught screwed up their ntsc fixed
> version - http://noname.c64.org/csdb/release/?id=74715 ) and noticed that
> indeed one very obscure bug has been triggered because hannenz (who
> originally wrote it) didnt exactly understand that returning just A in a
> function that returns char isnt enough... and appearently none of the guys
> who worked on it till now knew it either :)

Yes. That is even true for cbm_k_save (on which cbm_save is based): It does
not clear the X register, so the problem, Johan was experiencing may have been
caused by this error. I will fix it.

Regards


        Uz


-- 
Ullrich von Bassewitz                                  uz@musoftware.de
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Received on Sun Aug 23 23:37:07 2009

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