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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /Documentation/fb/tgafb.txt | |
download | kernel_i9300_mainline-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip kernel_i9300_mainline-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz kernel_i9300_mainline-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.bz2 |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'Documentation/fb/tgafb.txt')
-rw-r--r-- | Documentation/fb/tgafb.txt | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/Documentation/fb/tgafb.txt b/Documentation/fb/tgafb.txt new file mode 100644 index 0000000..250083a --- /dev/null +++ b/Documentation/fb/tgafb.txt @@ -0,0 +1,69 @@ +$Id: tgafb.txt,v 1.1.2.2 2000/04/04 06:50:18 mato Exp $ + +What is tgafb? +=============== + +This is a driver for DECChip 21030 based graphics framebuffers, a.k.a. TGA +cards, which are usually found in older Digital Alpha systems. The +following models are supported: + +ZLxP-E1 (8bpp, 2 MB VRAM) +ZLxP-E2 (32bpp, 8 MB VRAM) +ZLxP-E3 (32bpp, 16 MB VRAM, Zbuffer) + +This version is an almost complete rewrite of the code written by Geert +Uytterhoeven, which was based on the original TGA console code written by +Jay Estabrook. + +Major new features since Linux 2.0.x: + + * Support for multiple resolutions + * Support for fixed-frequency and other oddball monitors + (by allowing the video mode to be set at boot time) + +User-visible changes since Linux 2.2.x: + + * Sync-on-green is now handled properly + * More useful information is printed on bootup + (this helps if people run into problems) + +This driver does not (yet) support the TGA2 family of framebuffers, so the +PowerStorm 3D30/4D20 (also known as PBXGB) cards are not supported. These +can however be used with the standard VGA Text Console driver. + + +Configuration +============= + +You can pass kernel command line options to tgafb with +`video=tgafb:option1,option2:value2,option3' (multiple options should be +separated by comma, values are separated from options by `:'). +Accepted options: + +font:X - default font to use. All fonts are supported, including the + SUN12x22 font which is very nice at high resolutions. + +mode:X - default video mode. The following video modes are supported: + 640x480-60, 800x600-56, 640x480-72, 800x600-60, 800x600-72, + 1024x768-60, 1152x864-60, 1024x768-70, 1024x768-76, + 1152x864-70, 1280x1024-61, 1024x768-85, 1280x1024-70, + 1152x864-84, 1280x1024-76, 1280x1024-85 + + +Known Issues +============ + +The XFree86 FBDev server has been reported not to work, since tgafb doesn't do +mmap(). Running the standard XF86_TGA server from XFree86 3.3.x works fine for +me, however this server does not do acceleration, which make certain operations +quite slow. Support for acceleration is being progressively integrated in +XFree86 4.x. + +When running tgafb in resolutions higher than 640x480, on switching VCs from +tgafb to XF86_TGA 3.3.x, the entire screen is not re-drawn and must be manually +refreshed. This is an X server problem, not a tgafb problem, and is fixed in +XFree86 4.0. + +Enjoy! + +Martin Lucina <mato@kotelna.sk> |