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- Newsgroups: comp.windows.x.i386unix
- Path: sparky!uunet!munnari.oz.au!metro!news
- From: dawes@physics.su.OZ.AU (David Dawes)
- Subject: Re: X386 on Hercules and X386 bugs and suggestions
- Message-ID: <1992Dec23.034000.26842@ucc.su.OZ.AU>
- Sender: news@ucc.su.OZ.AU
- Nntp-Posting-Host: physics.su.oz.au
- Organization: School of Physics, University of Sydney, Australia
- References: <1992Dec21.052259.24129@athena.mit.edu> <1992Dec21.132332.11450@cbnewsj.cb.att.com> <1992Dec21.175647.9279@athena.mit.edu>
- Date: Wed, 23 Dec 1992 03:40:00 GMT
- Lines: 37
-
- In article <1992Dec21.175647.9279@athena.mit.edu> dmatic@athena.mit.edu (Davor Matic) writes:
- >
- >
- >I have a question about IMAGE_BYTE_ODER and BITMAP_BIT_ORDER.
- >
- >i386/486 machines use IMAGE_BYTE_ORDER as LSBFirst. Now, I noticed
- >that BITMAP_BIT_ORDER is defined to be LSBFirst as well for SYSV386.
- >BITMAP_BIT_ORDER should be device dependant, right? So are VGA's
- >really LSBFirst or is this not relevant if one is using only the
- >vga256 driver? mfb certailny works faster with both BIT and BYTE
- >order the same way.
-
- It's matters for the mono vga driver where BITMAP_BIT_ORDER is MSBFirst.
-
- >What happens if one wants to use two devices which use different
- >BITMAP_BIT_ORDER in the same server? Is this possible at all?
-
- Not sure -- that's why XFree86 has a separate binary for the colour and
- mono servers. I've never tried setting BITMAP_BIT_ORDER to MSBFirst in
- the vga256 server (off-hand I can't think why it wouldn't work). We've
- found that if IMAGE_BYTE_ORDER != BITMAP_BIT_ORDER,
- BITMAP_SCANLINE_UNIT needs to be set to 8 instead of the usual 32.
-
- >Hercules card is MSBFirst for BITMAP_BIT_ORDER. What is the correct
- >order for VGA boards? Can I use both in the same server?
- >
- >Where can I find XFree86 source code, but not as patches, please?
-
- It is only available as patches to the MIT X11R5 source. The patches
- are on export.lcs.mit.edu in contrib/XFree86.
-
- David
- --
- ------------------------------------------------------------------------------
- David Dawes (dawes@physics.su.oz.au) DoD#210 | Phone: +61 2 692 2639
- School of Physics, University of Sydney, Australia | Fax: +61 2 660 2903
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