Int 10 Fn 00 - Video - Set Video Mode (Cont.)
= G 100x75 8x8 800x600 16 . . Genoa SuperEGA BIOS 3.0+
= G 100x75 8x8 800x600 16 . . Genoa 6400
7Ah = T 114x60 8x8 . 16 . B800 Quadram Ultra VGA
= T 114x60 8x8 . . . . Genoa SuperEGA BIOS 3.0+
= G . . 720x540 256 . . C&T chipset, Cardinal
7Bh = G . . 800x600 256 . . C&T chipset, Cardinal
= G 114x60 . 912x480 16??? . A000 Quadram Ultra VGA
= G . . 912x480 16 . . Genoa SuperEGA BIOS 3.0+
7Ch = G . . 512x512 16 . . Genoa
= G . . 800x600 256 . . C&T 82C453 chipset
= G 200x75 8x16 1600x1200 . [16] . A000 Diamond Stealth64 Video 2xx1
7Dh = G 64x32 8x16 512x512 256 . . Genoa
7Eh = special mode set (see AX=007Eh) . Paradise VGA, AT&T VDC600
= G 80x25 8x16 640x400 256 . . Genoa 6400
= G . . 1024x768 256 . . C&T 82C453 chipset
= G 90x43 . . mono . B000 HERCULES.COM on HGC [14]
7Fh = special function set (see AX=007Fh/BH=00h) Paradise VGA, AT&T VDC600
= G 128x48 8x16 1024x768 4 . . Genoa 6400
= G 90x29 . . mono . B000 HERCULES.COM on HGC [14]
82h = T 80x25 . . B&W . . AT&T VDC overlay mode [6]
83h = T 80x25 . . . . . AT&T VDC overlay mode [6]
86h = G . . 640x200 B&W . . AT&T VDC overlay mode [6]
88h = G 90x43 8x8 720x348 mono . B000 Hercules + MSHERC.COM
C0h = G . . 640x400 2/prog palette . AT&T VDC overlay mode [6]
= G . . 640x400 2/prog palette . Olivetti Quaderno overlay
C4h = disable output . . . . AT&T VDC overlay mode [6]
C8h = G 80x50 8x8 640x400 2 . B800 Olivetti Quaderno overlay
D0h = G . . 640x400 2 . B800 DEC VAXmate AT&T mode
Notes:
[1] interlaced only
[2] for ATI EGA Wonder, mode 08h is only valid if SMS.COM is loaded resident.
SMS maps mode 08h to mode 27h if the byte at location 0040:0063 is 0B4h,
otherwise to mode 23h, thus selecting the appropriate (monochrome or
color) 132x25 character mode.
for ATI VGA Wonder, mode 08h is the same, and only valid if VCONFIG loaded
resident
[3] early XGA boards support 132-column text but do not have this BIOS mode
[4] DESQview intercepts calls to change into these two modes (21h is page 0,
22h is page 1) even if there is no Hercules graphics board installed
[5] ATI BIOS v4-1.00 has a text-scrolling bug in this mode
[6] for AT&T VDC overlay modes, BL contains the DEB mode, which may be 06h,
40h, or 44h
[7] BIOS text support is broken in this undocumented mode; scrolling moves
only about 1/3 of the screen (and does even that portion incorrectly),
while screen clears only clear about 3/4.
[8] The Oak OTI-037/067/077 modes are present in the Oak VGA BIOS, which OEMs
may choose to use only partially or not at all; thus, not all Oak boards
support all "Oak" modes listed here
[9] this card uses the full 128K A000h-BFFFh range for the video buffer,
precluding the use of a monochrome adapter in the same system
[10] mode 17h supported by Tseng ET4000 BIOS 8.01X dated 09/14/90, but not
v8.01X dated 02/28/92; mode 21h supported by 02/28/92 version but not
09/14/90 version
[11] HERKULES simulates a 90x45 text mode in Hercules graphics mode; the
installation check for HERKULES.COM is the signature "Herkules" two
bytes beyond the INT 10 handler
[12] The Realtek RTVGA BIOS v3.C10 crashes when attempting to switch into
modes 21h or 27h; this version of the BIOS also sets the BIOS data area
incorrectly for extended text modes, resulting in scrolling after only
24 lines (the VMODE.EXE utility does set the data area correctly)
[13] The Tandy 1000SL/TL BIOS does not actually support this mode
[14] HERCULES.COM is a graphics-mode BIOS extension for Hercules-compatible
graphics cards by Soft Warehouse, Inc. Its installation check is to
test whether the word preceding the INT 10 handler is 4137h.
[15] The Hercules-graphics video modes for HERCBIOS (shareware by Dave
Tutelman) may be changed by a command-line switch; the 90x43
character-cell mode's number is always one higher than the 90x29 mode
(whose default is mode 08h)
[16] Stealth64 Video 2001-series BIOS v1.03 reports 76 lines for mode 7Ch,
resulting in incorrect scrolling for TTY output (scrolling occurs only
after the end of the 76th line, which is not displayed)
[17] For 43-line text on EGA or 43/50-line text on VGA, you must load an 8x8
font using AX=1102h after switching to mode 3; VGA may also require
using INT 10/AH=12h/BL=30h
See Also: #0010,#0081,#0123
Index: video modes
Index: installation check;HERKULES|installation check;HERCULES.COM