Mail Archives: djgpp/1993/07/09/05:09:45
Using libgrx with an MVGA-S3C911 Graphics Adapter, one can use the
stealth.grn driver, but the 132x?? text modes cannot be set by GrSetMode.
To use a modified version (I called it MVGA-S3.GRN, named after the adapter)
one has to change the following in the file MVGA-S3C.ASM, compared to
STEALTH.ASM:
STEALTH.ASM:
dw 132, 25, 16, 009h + 00100h ; VESA 10ah mode
dw 132, 44, 16, 00ah + 00100h ; VESA 10ah mode
MVGA-S3C.ASM:
vv v
dw 132, 25, 16, 055h + 00000h ; VESA 10ah mode
dw 132, 43, 16, 054h + 00000h ; VESA 10ah mode
^ ^^ ^
Perform:
tasm mvga-s3c.asm
tlink mvga-s3c.obj
exe2bin mvga-s3c.exe mvga-s3c.grn
Then everything works fine, except for the 132x43 16 colors text mode
(mode no. 54h), which stops at 25 lines without scrolling. This is NOT a
bug in the driver (using the SMODE program accompanying the adapter has
the same result), but one in the BIOS code I assume.
Rene' (R DOT Jager AT ET DOT TUDelft DOT NL)
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