3 XF86Config options

Contents of this section

Several options are supported in the "Device" section for the Mach64 X server. The Mach64 X server reads the Clocks from the BIOS. The "Clocks" lines in the XF86Config file are normally ignored by the Mach64 X server unless the "no_bios_clocks" option is given.

Option "sw_cursor"

This option allows you to use the software cursor instead of the hardware cursor.

Option "composite"

This option will set the composite sync for monitors that require this.

Option "dac_8_bit"

This option enables 8 bits per RGB value. Note this option does not work with the Chrontel 8398 RAMDAC.

Option "override_bios"

This option allows you to specify a video mode that the video card's BIOS believes to be illegal. Some BIOSs have incorrect maximum resolution and/or dot clock limitations. Use this option with care. It is possible to specify a video mode that can damage your card.

Option "no_block_write"

This option allows you to turn off block write mode. Block write mode only works on certain types of VRAM cards, and this option has no effect on DRAM based cards. If you see noise on the screen that can be captured via xmag, then it is probably a problem with block write mode. This ``noise'' usually looks like bits of windows/menus repeated on the screen.

Option "block_write"

This option allows you to turn on block write mode. Block write mode only works on certain types of VRAM cards, and this option has no effect on DRAM based cards. If you want to override the probed default, you can use this option.

Option "power_saver"

This option allows the server to use the power saving features of certain "green" monitors instead of blanking when the screen saver is activated. This option is still experimental.

Option "no_bios_clocks"

This option allows you to override the clocks read from the video card's BIOS. Normally the Mach64 server will ignore the Clocks line, but with this option the clocks from the XF86Config file can override the BIOS's clocks.

MemBase baseaddress

This entry specifies the video memory aperture address. Normally the aperture address is automatically determined, but on some VESA Local Bus systems the address chosen will not work. If the Mach64 X server is dying with a seg. fault, then try setting the aperture address to another location.

$XFree86: xc/programs/Xserver/hw/xfree86/doc/sgml/Mach64.sgml,v 3.5 1995/07/21 14:40:46 dawes Exp $

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