Re: [cc65] Char set questions

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From: Jason Robertson (jkr_at_westol.com)
Date: 2002-05-23 16:28:42


On Wed, 22 May 2002 21:04:21 +0200, Ullrich von Bassewitz
<uz_at_musoftware.de> wrote:

>Hi!

Hi!


>On Wed, May 22, 2002 at 09:16:39AM -0400, Jason Robertson wrote:
>> 1. Where in the C64 can I stick a char set that won't be touched by
>> the compiler/object code? Ie function code won't overwrite it etc.
>
>Placing it below the kernal ROM would be a good idea (see groepaz comment).

Heh, until you and Groepaz responded I had completely forgot that was
even possible ;-)

>> 2. With a custom set in place and being used how will the conio
>> functions cprintf(), cputc(), and cputs() etc. be effected? I assume
>> that they'd be useable with the new set?
>
>I've had a quick look at them and as far as I can tell they are using the ROM
>routines for setting the pointers to the character and color RAM. So if you
>update the kernal variables, it should work with the new video memory
>location. This is untested however, and feedback is appreciated.

Ah ok - Groepaz also mentioned updating the kernal areas too so this
would probably work out. Well, I'm not sure how quick I'd get you
feedback on that particular thing at the moment since I'm still early
in the on-paper stage.

Thanks!

Jason
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