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- Path: sparky!uunet!gatech!darwin.sura.net!tulane!agwbbs!Paul_Trauth
- From: Paul_Trauth@agwbbs.new-orleans.LA.US (Paul Trauth)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Are copper blits compatible with multitasking?
- Distribution: world
- Message-ID: <Paul_Trauth.14sv@agwbbs.new-orleans.LA.US>
- Date: 23 Nov 92 09:42:38 CST
- Organization: The Amiga GateWay BBS * New Orleans, La.
- Lines: 29
-
- Let's say i'm putting up a display by jamming my own copperlist into
- coplch. How well would doing blits via this copperlist work with the Amiga
- OS? (and i need to know for v1.3 to 3.0, if it's different...)
- I'm in the process of writing a fairly sprite-oriented game, and it seems
- that it's a simple enough design that if i can do the few blits i need, i
- could easily have a really cool game that could be played while
- downloading. (Maybe not at 14.4k...)
-
- One other thing that may also be a factor in making this thing
- system-friendly is the fact that the main engine is run off of a
- copper-triggered interrupt at the bottom of the display area.
- (wonder if a good way to make that a bit less obnoxious [i push the
- interrupt routine's address into the hardware vectors, and yes, i am
- VBR-safe, or at least i will be before i release it) would be to grab all
- the audio channels [since i'll be making sound anyway] and trigger a l4
- interrupt with the copper... seems like nobody would be USING the l4 vector
- once i snagged all 4 channels. do i think right?)
-
- (BTW, the game in progress is a /good/ rendition of the old C64 classic
- Space Taxi. I /still/ love this game...)
-
- -- Via DLG Pro v0.995
-
- - be zorch, daddi-o --------------- paul (raccoon) trauth ----------------
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