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- Path: hai.hiMolde.no!runee
- From: runee@hai.hiMolde.no (Rune Espeseth)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Re: No waitTOF under CyberGraphX!
- Date: 21 Mar 1996 13:10:35 GMT
- Organization: Molde College, Department of Computer Science
- Message-ID: <4irkgb$kne@ulke.hiMolde.no>
- References: <13213651@sourcery.han.de> <31319872.751@plea.se> <zp0e60aCMqF5Z1a@blank1.blanker.ruhr.de> <313C4157.7806@plea.se> <zp221eaCP6huZ1a@blank1.blanker.ruhr.de> <4i4uch$qdu@skivs.ski.org>
- NNTP-Posting-Host: hai.himolde.no
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-
- Doug Taylor (dtaylor@skivs.ski.org) wrote:
- : As far as I can tell when you write a new display start address it takes
- : effect on the next vertical blank. I believe this is a property of VGA and
- : SVGA chips. So if your rendering takes less than one frame you will get
- : smooth buffering but you will still have to wait for the vertical blank
- : signal to synchronize properly otherwise you may run ahead of yourself
- : and miss a frame.
-
- Hmm... this sounds fine, but can anyone tell how you actually wait for the
- verticalk blank/retrace ? Either by busywaiting or by setting up some
- sort of interrupt ?
- If this can NOT be done on gfx-cards (esp. cybervision), then I would say
- that they contain a BIG hardware-flaw that's INEXCUSABLE, and I want my money
- back (*sniff*) :)
-
- --
- Regards,
- Rune Espeseth
-
- -------------
- CyberStorm060/50Mhz, CyberVision64/4Mb
- Computer Information Science Student at Molde College, Norway
- Email: lakris@ask.himolde.no | Rune.Espeseth@himolde.no
-