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- Xref: sparky comp.sys.atari.st:20729 comp.sys.atari.st.tech:6775
- Path: sparky!uunet!pipex!warwick!uknet!sersun1!essex.ac.uk!alexk
- From: alexk@essex.ac.uk
- Newsgroups: comp.sys.atari.st,comp.sys.atari.st.tech
- Subject: Blitter s/w problem.
- Message-ID: <7634@sersun1.essex.ac.uk>
- Date: 21 Jan 93 14:12:57 GMT
- Sender: news@sersun1.essex.ac.uk
- Reply-To: alexk@essex.ac.uk ()
- Organization: University of Essex, Colchester, UK
- Lines: 20
-
-
- I have a problem using the blitter chip. The blitter appears to be
- drawing to what it thinks is a med-rez screen when it is in fact a low-rez
- screen. Ihave used XBIOS call 5 to set the rez, and screen addresses, and
- is called every time I page flip. Does XBIOS 5 tell the blitter the number
- of planes to use? I booted the machine in low-rez and ran my bit of code
- straight away but it still thinks it's in med-rez.
-
- I used ST Internals for my source of info, and it doesn't tell you
- to set _v_planes (first byte of bitblock), should I? My machine is an
- 'early' 1040 STe.
-
- Thanks,
-
- K.A.
-
- ------------------------------------------------------------------
- Kevin Alexander. | Pretentious Quote: "Uzi Nine Millimetre" |
- University of Essex. | (Shakespeare) |
- alexk@essex.ac.uk. | Disclaimer: I never wear fluffy slippers. |
-