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From: Oliver Schmidt <ol.sc@web.de>
Newsgroups: comp.sys.apple2.programmer
Subject: Re: An Attempt at CC65
Date: Sun, 30 Jun 2024 09:52:02 -0000 (UTC)
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Hi,

> I guess I thought I could just switch languages,
> compile, and run. I thought I could rewrite some
> of my silly BASIC programs in C and gain some speed
> and then I realized it may not be that simple. I've
> seen the TGI drivers. Is that how to get into GR and
> HGR and such?

Yes, the goal of the cc65 library is NOT to make C programs look as similar
to BASIC programs as possible.

Yes, TGI is the cc65 way to do graphics.

No, You can't just JSR to a ROM routine. The ROM is banked out. Use _sys()
instead. See https://cc65.github.io/doc/funcref.html#ss3.15

Regards,
Oliver