The only problem in getting X11 to work for an EGA or a MONOCHROME
monitor, is just a proper modeline. Both devices should use the
"generic" chipset, in the vga16 or mono servers. Here is a listing of my
setup that I posted earlier...
Section "Monitor"
Identifier "My Monitor"
VendorName "Victor Technologies"
ModelName "Enhanced Color Monitor"
HorizSync 12-65 # To ensure the server allows me to do some tests
VertRefresh 40-150
# The clock used here(28.3), must be the second clock that appears in the
# clock line, in the Device section, whatever the numbers. If you were
# using CGA, it should be the first clock :-)
Modeline "640x350" 28.3 656 736 744 760 350 363 362 366
Modeline "656x350" 28.3 656 700 708 760 350 370 391 400
EndSection
Section "Device"
Identifier "Generic VGA"
VendorName "Unknown"
Boardname "video7"
Chipset "generic"
VideoRam 512
Clocks 24.5 28.3 36.0 43.8
EndSection
Section "Screen"
Driver "VGA16" # "MONO" for the mono server
Device "Generic VGA"
Monitor "My Monitor"
Subsection "Display"
Modes "656x350" "640x350" # "720x400" for hercules
ViewPort 0 0
Virtual 800 600
Visual "StaticColor" # "StaticGray" for the mono server
EndSubsection
EndSection
If you don't have a modeline, you can easily find one by calculating it from
the CRT controller registers... here is a tip.
if you have a hercules graphics adapter, you can easily find the HDiplayed
and VDisplayed values... these are 720 and 400, what you now need is HTotal
and VTotal to start... the HTotal is inside the CRT - index 0. On my EGA
this value is #$5A. You start by adding 5 to this value, yielding #$5F and
then shifting it 3 times up... giving 760.
Finding VTotal is a little bit trickier... the first 7 bits recide in CRTC[6]
and bits 8-9 recide in CRTC[7] bits 0 and 5 respectively. On my system, peek
in CRTC[6] = #$6C, and CRTC[7]=#$1F, which means that VTotal = #$16C
--
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Ørn Einar Hansen [EMAIL PROTECTED]
[EMAIL PROTECTED]
fax; +46 035 217194
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