[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Assembly routine to tell if a hires pixel is currently set?
- Subject: Re: Assembly routine to tell if a hires pixel is currently set?
- From: mjmahon@aol.com (Michael J. Mahon)
- Date: 12 Jan 2004 22:40:03 GMT
- Newsgroups: comp.sys.apple2
- Organization: AOL http://www.aol.com
- References: <btu93e$78i$1@acme.gcfn.org>
- Xref: archiver1.google.com comp.sys.apple2:2427
Dave Althoff Jr wrote:
>Ron Kneusel (rkneusel@qwest.net) wrote:
>: I'm looking for a hires version of the SCRN function. I seem to
>: recall an HSCRN function floating around once upon a time but my
>: search has come up empty handed.
>
>: I would like something that can be used from assembly as I'm not
>: coding in Applesoft.
>
>: Ideally, the routine would work on any II.
>
>: Does anyone have something along these lines?
>
>: Any help appreciated!
>
>From Applesoft, you can code a 1-move shape table and XPLOT to the
>location, then check the collision detect flag.
I have often used this method, and it is fast and simple.
There are many interesting uses for the one-move shape!
-michael
Check out amazing quality sound for 8-bit Apples on my
Home page: http://members.aol.com/MJMahon/