Blitter s/w problem.

Article View: comp.sys.atari.st

Article #22874

#22874

From: alexk
Date: Thu, 21 Jan 1993 14:12

20 lines
1256 bytes

	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. |

Technical Details

Message-ID: <7634@sersun1.essex.ac.uk>

Path: arc1-ca.pugleaf.net!sparky!uunet!pipex!warwick!uknet!sersun1!essex.ac.uk!alexk

Show Full Headers

Complete Article Headers

Path: arc1-ca.pugleaf.net!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