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- From: "Jyrki Saarinen" <jsaarinen@kone.fipnet.fi>
- Date: Wed, 3 Jan 96 16:00:26 UT
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- X-Original-Date: Wed, 03 Jan 96 17:32:28
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- Subject: Demo/game to OS friendly part II
- Message-ID: <38231819@kone.fipnet.fi>
-
-
- Last time, when I asked these questions, it just became
- something else than helpful. Let us hope this time
- we are able to have nice, helpful discussion.
-
- 1) Let us assume I am doing a demo or a game. In a demo,
- I am displaying a 320x128 screen for a effect, then
- I want to show a picture with a 640x256 resolution?
- I dont want to close the 320x128 screen and open a 640x256 one.
- Any solutions?
-
- 2) Copper tricks are not possible, I presume. I want CyberGraphX
- support, too.
-
- 3) Sprite masking in Blitterscreen in out of the question.
-
- 4) I guess I have to make a selector, CyberGraphX or native
- Amiga chipset. Is there a way to check is the opened
- screen really native, eight bitplanes?
-
- 5) How I can open a 320x128 screen that works promoted, too?
-
- 6) Do AddIntServer/SetIntVector work on DraCo?
-
- 7) What about sound and DraCo?
-
- In my recent demo, I used QBlit() and OS interrupt setting
- functions. I had to rape INTENA-register because AUD0-
- interrupt was not enabled by default when I setted my
- own AUD0 interrupt.
-
- Using OS in this case made my demo work always, not
- freezing randomizely like it did when I used hardware
- banging for my VERTB LEV3, AUD0 LEV4 and BLIT LEV3 interrupts.
-
- -- _
- a Stellar programmer _ //
- "Amiga - back for the future" \X/
-