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- Path: sparky!uunet!munnari.oz.au!bunyip.cc.uq.oz.au!uqcspe!cs.uq.oz.au!warwick
- From: warwick@cs.uq.oz.au (Warwick Allison)
- Newsgroups: comp.sys.atari.st.tech
- Subject: Re: Falcon Video Hardware Bug
- Message-ID: <11650@uqcspe.cs.uq.oz.au>
- Date: 12 Jan 93 05:39:29 GMT
- References: <1993Jan11.150508.21531@cs.hw.ac.uk>
- Sender: news@cs.uq.oz.au
- Reply-To: warwick@cs.uq.oz.au
- Lines: 24
-
- neil@cs.hw.ac.uk (Neil Forsyth) writes:
-
- >The video hardware in the ST, STE, MegaSTE and TT will not implement a change
- >of video address (@ $FFFF8201,3 and D on the STE) until the vertical blank
- >occurs but before it generates the interrupt.
-
- >However the new video hardware on the Falcon will implement a new screen
- >address at any time that it is not accessing video RAM.
-
-
- If I only ever use XBIOS Setscreen() to change the physical (or logical)
- screen location, I should have no problems, right?
-
-
- [To be honest, I don't really know how to do it any other way, but I assume
- there is some memory location you can assign to to get the same effect]
-
- --
- Warwick
- --
- _-_|\ warwick@cs.uq.oz.au /Disclaimer:
- / * <-- Computer Science Department, /
- \_.-._/ University of Queensland, / C references are NULL && void*
- v Brisbane, Australia. /
-