home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!wupost!waikato.ac.nz!comp.vuw.ac.nz!cavebbs!tornado!khantazi!banksie
- Newsgroups: comp.sys.acorn.tech
- Subject: Re: Palette switching in Mode 15
- Message-ID: <2zcj0wj025n@khantazi.welly.gen.nz>
- From: banksie@khantazi.welly.gen.nz (Philip R. Banks)
- Date: Thu, 19 Nov 1992 20:20:43 +1300
- Reply-To: banks_p@kosmos.wcc.govt.nz
- References: <drushall.721932953@cs.man.ac.uk>
- Organization: My Arc.
- Lines: 30
-
- drushall@cs.man.ac.uk (David Rushall) writes:
-
- > I have a number of 'Spectrum 512', a 512-colours-on-the-screen picture format
- > for the Atari ST, which I would like to view on my A5000. The images would
- > fit on a Mode 15 screen, and could be displayed in all their glory if I had
- > some code to display a mode 15 screen, with a pallete switch at the beginning
- > of each scan line.
-
- The spectrum 512 system would better suit a palette switched Mode 12
- screen as only 16 colours are ever in use on each scan line.
-
- > Would any kind person happen to have some code to display a mode 15 screen
- > in this way, that they were prepared to let me have? Or even some code to
- > display 'Spectrum 512' images?
- >
- > Ideally, the code should work on any Acorn machine (obvious exceptions
- > disregarded), but if it only works with A5000/RO3.0 then that's good enough.
-
- It certainly wouldn't be hard to do the palette swicthing on any machine
- simply by hooking into IOC Timer 1 and using it. I was playing with
- implementing a Spectrum 512 picture viewer but ran out of time and interest.
-
- Philip
-
- --
- Philip R. Banks Syntax: mail < banks_p@kosmos.wcc.govt.nz > @@@@@/|
- @@@@/#|
- @@@/##|
- What price the crown of a king on his throne, when you are chained in @@/---|
- the dark all alone? ---A.P.P. @/ |
-