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- Path: comma.rhein.de!serpens!not-for-mail
- From: mlelstv@serpens.rhein.de (Michael van Elst)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Re: Demo/game to OS friendly part II
- Date: 3 Jan 1996 20:44:19 +0100
- Organization: dis-
- Message-ID: <4cemaj$jas@serpens.rhein.de>
- References: <38231819@kone.fipnet.fi>
- NNTP-Posting-Host: serpens.rhein.de
-
- "Jyrki Saarinen" <jsaarinen@kone.fipnet.fi> writes:
-
- >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?
-
- Then open the 640x256 in addition.
-
- > Amiga chipset. Is there a way to check is the opened
- > screen really native, eight bitplanes?
-
- Check the Screen->RastPort->BitMap with GetBitMapAttr().
-
- >5) How I can open a 320x128 screen that works promoted, too?
-
- Simply open it. The promoted result might be different from
- your wishes though. If the emulation refuses to open such
- a tiny screen then you may want to try some larger resolution
- and adapt your display.
-
- >6) Do AddIntServer/SetIntVector work on DraCo?
-
- Sort of. Since the vblank interrupt has little meaning
- for the Retina display there is little use for your own
- interrupts.
-
- >7) What about sound and DraCo?
-
- Until some audio.device emulation exists you could check
- for an existing Toccata and use it directly.
-
- >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.
-
- Then you did something wrong.
-
- Regards,
- --
- Michael van Elst
-
- Internet: mlelstv@serpens.rhein.de
- "A potential Snark may lurk in every tree."
-