VESA mode 0x10B - 132 columns × 50 rows - is it possible?

[Frantisek Hanzlik <franta-8CMi+4rsZoHtwjQa/ONI9g@public.gmane.org>]

Hello all DOSEMU enthusiasts,

first, thanks for developing and evolving this powerfull SW piece!
And now my current research (so far in vain): I want my DOS text app
run in text mode with resolution 132 columns × 50 rows - which should
be VESA 2.0 (maybe as early as VESA 1.2) mode 0x10B, according e.g.:

http://en.wikipedia.org/wiki/VESA_BIOS_Extensions#Modes_defined_by_VESA

but so far I'm unsuccessfull (except in the case when I run DOSEMU in
console mode in console/X window with this resolution, but this is
perhaps obvious).
Nevertheless, modes 0x10A (132 x 43) and 0x010C 132 x 60 are working
fine under xdosemu. Problem I have only with this 132 x 50 mode.

I'm using DOSEMU + FreeDOS 1.0, and thus potentially may be problem
in FreeDOS, but I suspect rather DOSEMU, as:

1) when I run commands 'mode con cols=132 lines=43', resp. 'mode con
cols=132 lines=60', I will get responses:

VESA 2.0 'DOSEMU VGA/VBE 2.0 Emulator', mode 0x0003, 4096k for BIOS, 57 modes.
VESA mode 0x010A: 132 x 43 with 8 x 11 font.

resp.

VESA 2.0 'DOSEMU VGA/VBE 2.0 Emulator', mode 0x0003, 4096k for BIOS, 57 modes.
VESA mode 0x010C: 132 x 60 with 8 x 8 font.

and right mode is set.
But after 'mode con cols=132 lines=50' command, resolution changes to
80 cols x 50 lines (i.e. not 132x50, as I want) and command output is:

VESA 2.0 'DOSEMU VGA/VBE 2.0 Emulator', mode 0x0003, 4096k for BIOS, 57 modes.
Using VGA 400 line resolution.
(this second line is totally different than in previous two cases)

2) When I grep DOSEMU source codes to '132' string, there is something
what may bear on 132xNN text mode in 'src/env/video/vgaemu_modelist.h'.
But it seems as 132x50 mode there isn't present... or am I wrong?
Maybe because Trident 8900, it seems, could not do 132x50 mode? But
what some VBE modes at vga_mode_table end? It would be possible for this
to be used?
Thanks in advance, Franta Hanzlik


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