ca65 goodies
Page 3 of 3

Author:  rainwarrior [ Wed Oct 18, 2017 8:15 am ]
Post subject:  Re: ca65 goodies

I don't have a solution for the string problem (TBH if it was something I needed I'd probably just write a substring directive into ca65 and submit a pull request to make it a standard feature), but here's a ca65 goodie I find useful for when I'm trying to write timed branches:

.macro assert_branch_page label_
   .assert >(label_) = >*, error, "Page crossing detected!"

   beq :+
   assert_branch_page :+ ; .assert will happen if this would cross a page

Author:  tokumaru [ Wed Oct 18, 2017 9:00 am ]
Post subject:  Re: ca65 goodies

thefox wrote:
Maybe new builtin functions (e.g., .strleft, .strright and .strmid) should be added to complement .left, .right and .mid.

That sure would be nice.

The macro you gave might expand to quite inefficient code (not exactly sure when ca65 evaluates certain parts of it).

Yeah, that's why I was wondering if anyone had thought of a better way to do this.

Page 3 of 3 All times are UTC - 7 hours
Powered by phpBB® Forum Software © phpBB Group