Differences

This shows you the differences between two versions of the page.

--- en:docs:bios:api:int10:modes [2022/11/23 09:50] – prokushev
+++ en:docs:bios:api:int10:modes [2024/05/21 02:23] (current) – prokushev
@@ Line 1: / Line 1: @@
 ====== Values for video mode ======
-^   ^ text/ ^ text ^ pixel ^ pixel ^ colors ^ disply ^ scrn ^ system ^
+^   ^ text/grph ^ text resol ^ pixel box ^ pixel resolution ^ colors ^ disply pages ^ scrn addr ^ system ^
-^ ::: ^ grph ^ resol ^ box ^ resolution ^  :::  ^ pages  ^ addr ^   :::   ^
 | 00h | T | 40x25 | 8x8 | 320x200 | 16gray | 8 | B800 | CGA,PCjr,Tandy |
 | ::: | T | 40x25 | 8x14 | 320x350 | 16gray | 8 | B800 | EGA |
@@ Line 19: / Line 18: @@
 | ::: | T | 80x25 | 8x16 | 640x400 | 16 | 8 | B800 | MCGA |
 | ::: | T | 80x25 | 9x16 | 720x400 | 16 | 8 | B800 | VGA |
-| ::: | T | 80x43 | 8x8 | 640x350 | 16 | 4 | B800 | EGA,VGA [17] |
+| ::: | T | 80x43 | 8x8 | 640x350 | 16 | 4 | B800 | EGA,VGA ((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)) |
-| ::: | T | 80x50 | 8x8 | 640x400 | 16 | 4 | B800 | VGA [17] |
+| ::: | T | 80x50 | 8x8 | 640x400 | 16 | 4 | B800 | VGA ((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)) |
 | 04h | G | 40x25 | 8x8 | 320x200 | 4 | . | B800 | CGA,PCjr,EGA,MCGA,VGA |
 | 05h | G | 40x25 | 8x8 | 320x200 | 4gray | . | B800 | CGA,PCjr,EGA |
 | ::: | G | 40x25 | 8x8 | 320x200 | 4 | . | B800 | MCGA,VGA |
 | 06h | G | 80x25 | 8x8 | 640x200 | 2 | . | B800 | CGA,PCjr,EGA,MCGA,VGA |
-| ::: | G | 80x25 | . | . | mono | . | B000 | HERCULES.COM on HGC [14] |
+| ::: | G | 80x25 | . | . | mono | . | B000 | HERCULES.COM on HGC ((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.)) |
 | 07h | T | 80x25 | 9x14 | 720x350 | mono | var | B000 | MDA,Hercules,EGA |
 | ::: | T | 80x25 | 9x16 | 720x400 | mono | . | B000 | VGA |
-| 08h | T | 132x25 | 8x8 | 1056x200 | 16 | . | B800 | ATI EGA/VGA Wonder [2] |
+| 08h | T | 132x25 | 8x8 | 1056x200 | 16 | . | B800 | ATI EGA/VGA Wonder ((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)) |
-| ::: | T | 132x25 | 8x8 | 1056x200 | mono | . | B000 | ATI EGA/VGA Wonder [2] |
+| ::: | T | 132x25 | 8x8 | 1056x200 | mono | . | B000 | ATI EGA/VGA Wonder ((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)) |
 | ::: | G | 20x25 | 8x8 | 160x200 | 16 | . | . | PCjr, Tandy 1000 |
 | ::: | G | 80x25 | 8x16 | 640x400 | color | . | . | Tandy 2000 |
 | ::: | G | 90x43 | 8x8 | 720x348 | mono | . | B000 | Hercules + MSHERC.COM |
-| ::: | G | 90x45 | 8x8 | 720x360 | mono | . | B000 | Hercules + HERKULES [11] |
+| ::: | G | 90x45 | 8x8 | 720x360 | mono | . | B000 | Hercules + HERKULES ((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)) |
-| ::: | G | 90x29 | 8x12 | 720x348 | mono | . | . | Hercules + HERCBIOS [15] |
+| ::: | G | 90x29 | 8x12 | 720x348 | mono | . | . | Hercules + HERCBIOS ((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))) |
 | 09h | G | 40x25 | 8x8 | 320x200 | 16 | . | . | PCjr, Tandy 1000 |
 | ::: | G | 80x25 | 8x16 | 640x400 | mono | . | . | Tandy 2000 |
-| ::: | G | 90x43 | 8x8 | 720x348 | mono | . | . | Hercules + HERCBIOS [15] |
+| ::: | G | 90x43 | 8x8 | 720x348 | mono | . | . | Hercules + HERCBIOS ((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))) |
 | 0Ah | G | 80x25 | 8x8 | 640x200 | 4 | . | . | PCjr, Tandy 1000 |
 | 0Bh | reserved ||||||| (EGA BIOS internal use) |
-| ::: | G | 80x25 | 8x8 | 640x200 | 16 | . | . | Tandy 1000 SL/TL [13] |
+| ::: | G | 80x25 | 8x8 | 640x200 | 16 | . | . | Tandy 1000 SL/TL ((The Tandy 1000SL/TL BIOS does not actually support this mode)) |
 | 0Ch | reserved ||||||| (EGA BIOS internal use) |
 | 0Dh | G | 40x25 | 8x8 | 320x200 | 16 | 8 | A000 | EGA,VGA |
@@ Line 52: / Line 51: @@
 | ::: | G | . | . | 640x480 | 16 | . | . | UltraVision+256K EGA |
 | 13h | G | 40x25 | 8x8 | 320x200 | 256/256K | . | A000 | VGA,MCGA,ATI VIP |
-| 14h | T | 132x25 | Nx16 | . | 16 | . | B800 | XGA, IBM Enhanced VGA [3] |
+| 14h | T | 132x25 | Nx16 | . | 16 | . | B800 | XGA, IBM Enhanced VGA ((early XGA boards support 132-column text but do not have this BIOS mode)) |
 | ::: | T | 132x25 | 8x16 | 1056x400 | 16/256K | . | . | Cirrus CL-GD5420/5422/5426 |
 | ::: | G | 80x25 | 8x8 | 640x200 | . | . | . | Lava Chrome II EGA |
@@ Line 60: / Line 59: @@
 | ::: | G | . | . | 800x600 | 16 | . | . | Tecmar VGA/AD |
 | 17h | T | 132x25 | . | . | . | . | . | Tecmar VGA/AD |
-| ::: | T | 80x43 | 8x8 | 640x348 | 16 | 4 | B800 | Tseng ET4000 BIOS [10] |
+| ::: | T | 80x43 | 8x8 | 640x348 | 16 | 4 | B800 | Tseng ET4000 BIOS ((mode 17h supported by Tseng ET4000 BIOS 8.01X dated 1990/09/14, but not v8.01X dated 1992/02/28; mode 21h supported by 1992/02/28 version but not 1990/09/14 version)) |
 | ::: | G | 80x34 | 8x14 | 640x480 | . | . | . | Lava Chrome II EGA |
-| 18h | T | 80x30 | 9x16 | 720x480 | 16 | 1 | A000 | Realtek RTVGA [12] |
+| 18h | T | 80x30 | 9x16 | 720x480 | 16 | 1 | A000 | Realtek RTVGA ((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))) |
 | ::: | T | 132x25 | . | . | mono | . | B000 | Cirrus 5320 chipset |
 | ::: | T | 132x44 | 8x8 | 1056x352 | mono | . | B000 | Tseng Labs EVA |
@@ Line 69: / Line 68: @@
 | ::: | G | 80x34 | 8x14 | 640x480 | . | . | . | Lava Chrome II EGA |
 | ::: | G | . | . | 1024x768 | 16 | . | . | Tecmar VGA/AD |
-| 19h | T | 80x43 | 9x11 | 720x473 | 16 | 1 | A000 | Realtek RTVGA [12] |
+| 19h | T | 80x43 | 9x11 | 720x473 | 16 | 1 | A000 | Realtek RTVGA ((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))) |
 | ::: | T | 132x25 | 8x14 | 1056x350 | mono | . | B000 | Tseng Labs EVA |
 | ::: | T | 132x25 | 9x14 | 1188x350 | 4gray | 4 | B000 | Tseng ET3000 chipset |
 | ::: | T | 132x25 | 8x14 | 1056x350 | 16/256 | 4 | B000 | Tseng ET4000 chipset |
 | ::: | T | 132x34 | . | . | mono | . | B000 | Cirrus 5320 chipset |
-| 1Ah | T | 80x60 | 9x8 | 720x480 | 16 | 1 | A000 | Realtek RTVGA [12] |
+| 1Ah | T | 80x60 | 9x8 | 720x480 | 16 | 1 | A000 | Realtek RTVGA ((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))) |
 | ::: | T | 132x28 | 8x13 | 1056x364 | mono | . | B000 | Tseng Labs EVA |
 | ::: | T | 132x28 | 9x13 | 1188x364 | 4gray | 4 | B000 | Tseng ET3000 chipset |
@@ Line 80: / Line 79: @@
 | ::: | T | 132x44 | . | . | mono | . | B000 | Cirrus 5320 chipset |
 | ::: | G | . | . | 640x350 | 256 | . | . | Tecmar VGA/AD |
-| 1Bh | T | 132x25 | 9x14 | 1188x350 | 16 | 1 | A000 | Realtek RTVGA [12] |
+| 1Bh | T | 132x25 | 9x14 | 1188x350 | 16 | 1 | A000 | Realtek RTVGA ((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))) |
 | ::: | G | . | . | 640x400 | 256 | . | . | Tecmar VGA/AD |
 | 1Ch | T | 132x25 | . | . | . | . | . | Cirrus 5320 chipset |
-| ::: | T | 132x30 | 9x16 | 1188x480 | 16 | 1 | A000 | Realtek RTVGA [12] |
+| ::: | T | 132x30 | 9x16 | 1188x480 | 16 | 1 | A000 | Realtek RTVGA ((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))) |
 | ::: | G | . | . | 640x480 | 256 | . | . | Tecmar VGA/AD |
 | 1Dh | T | 132x43 | . | . | . | . | . | Cirrus 5320 chipset |
-| ::: | T | 132x43 | 9x11 | 1188x473 | 16 | 1 | A000 | Realtek RTVGA [12] |
+| ::: | T | 132x43 | 9x11 | 1188x473 | 16 | 1 | A000 | Realtek RTVGA ((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))) |
 | ::: | G | . | . | 800x600 | 256 | . | . | Tecmar VGA/AD |
 | 1Eh | T | 132x44 | . | . | . | . | . | Cirrus 5320 chipset |
-| ::: | T | 132x60 | 9x8 | 1188x480 | 16 | 1 | A000 | Realtek RTVGA [12] |
+| ::: | T | 132x60 | 9x8 | 1188x480 | 16 | 1 | A000 | Realtek RTVGA ((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))) |
 | 1Fh | G | 100x75 | 8x8 | 800x600 | 16 | 1 | A000 | Realtek RTVGA |
 | 20h | T | 132x25 | . | . | 16 | . | . | Avance Logic AL2101 |
@@ Line 99: / Line 98: @@
 | ::: | T | 132x44 | 9x9 | 1188x396 | 16/256K | . | B800 | WD90C |
 | ::: | T | 132x44 | 9x9 | 1188x396 | 16 | . | B800 | Diamond Speedstar 24X |
-| ::: | T | 132x60 | . | . | 16 | 2 | B800 | Tseng ET4000 chipset [10] |
+| ::: | T | 132x60 | . | . | 16 | 2 | B800 | Tseng ET4000 chipset ((mode 17h supported by Tseng ET4000 BIOS 8.01X dated 1990/09/14, but not v8.01X dated 1992/02/28; mode 21h supported by 1992/02/28 version but not 1990/09/14 version)) |
-| ::: | G | 80x43 | 8x8 | 720x348 | mono | . | B000 | DESQview 2.x+Hercules [4] |
+| ::: | G | 80x43 | 8x8 | 720x348 | mono | . | B000 | DESQview 2.x+Hercules ((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)) |
-| ::: | G | 128x48 | 8x16 | 1024x768 | 16 | 1 | A000 | Realtek RTVGA [12] |
+| ::: | G | 128x48 | 8x16 | 1024x768 | 16 | 1 | A000 | Realtek RTVGA ((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))) |
 | 22h | T | 132x43 | . | . | . | . | . | Allstar Peacock (VGA) |
 | ::: | T | 132x43 | . | . | 16 | . | . | Avance Logic AL2101 |
@@ Line 111: / Line 110: @@
 | ::: | T | 132x44 | 8x9 | 1056x398 | 16 | . | . | STB Lightspeed ET4000/W32P |
 | ::: | T | 132x44 | . | . | 16 | . | . | Orchid Prodesigner VGA |
-| ::: | G | 80x43 | 8x8 | 720x348	mono	  .   B800 DESQview 2.x+Hercules [4]
+| ::: | G | 80x43 | 8x8 | 720x348 | . |	mono | B800 | DESQview 2.x+Hercules ((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)) |
 | ::: | G | 96x64 | 8x16 | 768x1024 | 16 | 1 | A000 | Realtek RTVGA |
 | ::: | G | 100x37 | 8x16 | 800x600 | 16 | . | . | C&T 64310/65530 BIOS |
@@ Line 156: / Line 155: @@
 | ::: | G | . | . | 720x512 | 16 | . | . | VEGA VGA |
 | ::: | G | . | . | 720x512 | 16 | . | . | Genoa |
-| ::: | G | 100x75 | 8x8 | 800x600 | 256 | 1 | A000 | Realtek RTVGA [12] |
+| ::: | G | 100x75 | 8x8 | 800x600 | 256 | 1 | A000 | Realtek RTVGA ((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))) |
 | ::: | G | . | . | 960x720 | 16 | . | . | Avance Logic AL2101 |
 | 28h | T | ???x??? | . | . | . | . | . | VEGA VGA |
@@ Line 236: / Line 235: @@
 | 3Ch | G | . | . | 640x400 | 64K | . | . | Compaq QVision 1024/1280 |
 | 3Dh | G | . | . | 1280x1024 | 16 | . | . | Definicon |
-| ::: | G | 128x64 | 8x16 | 1280x1024 | 16 | 1 | A000 | Tseng ET4000 v3.00 ((interlaced only)) [7] |
+| ::: | G | 128x64 | 8x16 | 1280x1024 | 16 | 1 | A000 | Tseng ET4000 v3.00 ((interlaced only)) ((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.)) |
 | 3Eh | G | . | . | 1280x961 | 16 | . | . | Definicon |
 | ::: | G | . | . | 640x480 | 64K | . | . | Compaq QVision 1024/1280 |
@@ Line 313: / Line 312: @@
 | ::: | G | 128x48 | 8x16 | 1024x768 | . | . | A000 | Diamond Stealth64 Video 2xx1 |
 | 4Eh | T | 120x43 | . | . | . | . | . | VEGA VGA |
-| ::: | T | 80x60 | 8x8 | . | 16/256K | . | B800 | Oak OTI-067/OTI-077 [8] |
+| ::: | T | 80x60 | 8x8 | . | 16/256K | . | B800 | Oak OTI-067/OTI-077 ((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)) |
 | ::: | G | . | . | 640x400 | 16M | . | . | Compaq QVision 1024/1280 |
 | ::: | G | 144x54 | 8x16 | 1152x864 | . | . | A000 | Diamond Stealth64 Video 2xx1 |
 | 4Fh | T | 132x25 | . | . | . | . | . | VEGA VGA |
-| ::: | T | 132x60 | . | . | . | . | . | some Oak Tech VGA [8] |
+| ::: | T | 132x60 | . | . | . | . | . | some Oak Tech VGA ((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)) |
 | ::: | G | . | . | 640x480 | 16M | . | . | Compaq QVision 1280 |
 | 50h | T | 80x30 | 8x16 | . | 16/256K | . | B800 | Trident TVGA 8800/8900 |
@@ Line 325: / Line 324: @@
 | ::: | T | 132x25 | 9x14 | . | 4 | 4 | B800 | Ahead B |
 | ::: | T | 132x25 | 8x14 | . | 16 | 8 | B800 | OAK Technologies VGA-16 |
-| ::: | T | 132x25 | 8x14 | . | 16/256K | . | B800 | Oak OTI-037/067/077 [8] |
+| ::: | T | 132x25 | 8x14 | . | 16/256K | . | B800 | Oak OTI-037/067/077 ((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)) |
 | ::: | T | 132x25 | 8x14 | 1056x350 | 16 | 8 | B800 | UM587 chipset |
 | ::: | T | 132x30 | . | . | 16 | . | . | MORSE VGA |
@@ Line 357: / Line 356: @@
 | ::: | G | 94x29 | 8x14 | 752x410 | 16 | . | . | ATI EGA Wonder |
 | ::: | G | 100x75 | 8x8 | 800x600 | 16 | 1 | A000 | OAK Technologies VGA-16 |
-| ::: | G | 100x75 | 8x8 | 800x600 | 16 | . | A000 | Oak OTI-037 chipset [8] |
+| ::: | G | 100x75 | 8x8 | 800x600 | 16 | . | A000 | Oak OTI-037 chipset ((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)) |
-| ::: | G | 100x37 | 8x16 | 800x600 | 16 | . | A000 | Oak OTI-067/077 chips [8] |
+| ::: | G | 100x37 | 8x16 | 800x600 | 16 | . | A000 | Oak OTI-067/077 chips ((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)) |
 | ::: | G | 100x75 | 8x8 | 800x600 | 16 | . | A000 | UM587 chipset |
 | ::: | G | 128x30 | 8x16 | 1024x480 | 16 | . | . | NEL Electronics BIOS |
@@ Line 368: / Line 367: @@
 | ::: | G | 80x25 | 8x19 | 640x480 | 16 | 1 | A000 | AX VGA (Kanji, no superimp.) |
 | ::: | G | . | . | 640x480 | 256 | . | . | Oak VGA |
-| ::: | G | 80x30 | 8x16 | 640x480 | 256 | . | A000 | Oak OTI-067/OTI-077 [8] |
+| ::: | G | 80x30 | 8x16 | 640x480 | 256 | . | A000 | Oak OTI-067/OTI-077 ((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)) |
 | ::: | G | 100x40 | 8x14 | 800x560 | 16 | . | . | ATI EGA Wonder,ATI VIP |
 | ::: | G | . | . | . | . | . | . | AX PC |
@@ Line 386: / Line 385: @@
 | ::: | T | 132x43 | 8x8 | . | . | . | B800 | Diamond Stealth64 Video 2xx1 |
 | ::: | T | 132x43 | 8x8 | 1056x350 | 16/256K | . | . | Cirrus CL-GD5420/5422/5426 |
-| ::: | T | 132x50 | 8x8 | . | 16 | . | A000 | NCR 77C22 [9] |
+| ::: | T | 132x50 | 8x8 | . | 16 | . | A000 | NCR 77C22 ((this card uses the full 128K A000h-BFFFh range for the video buffer, precluding the use of a monochrome adapter in the same system)) |
 | ::: | G | 100x42 | 8x14 | 800x600 | 16 | . | A000 | ATI EGA Wonder, VGA Wonder |
 | ::: | G | 100x42 | 8x14 | 800x600 | 16 | . | A000 | ATI Ultra 8514A, ATI XL |
 | ::: | G | . | . | 800x600 | 256 | . | A000 | Oak VGA |
-| ::: | G | 100x37 | 8x16 | 800x600 | 256 | . | A000 | Oak OTI-067/077 chips [8] |
+| ::: | G | 100x37 | 8x16 | 800x600 | 256 | . | A000 | Oak OTI-067/077 chips ((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)) |
 | 55h | T | 80x66 | 8x8 | . | 16/256K | . | A000 | ATI VIP |
 | ::: | T | 132x25 | 8x14 | . | . | . | . | Paradise EGA-480 |
@@ Line 400: / Line 399: @@
 | ::: | T | 132x25 | . | . | . | . | . | Hewlett-Packard D1180A |
 | ::: | T | 132x25 | 7x16 | . | 16 | . | . | AT&T VDC600 |
-| ::: | T | 132x25 | 8x16 | . | 16 | . | A000 | NCR 77C22 [9] |
+| ::: | T | 132x25 | 8x16 | . | 16 | . | A000 | NCR 77C22 ((this card uses the full 128K A000h-BFFFh range for the video buffer, precluding the use of a monochrome adapter in the same system)) |
 | ::: | T | 132x25 | 9x16 | 1188x400 | 16/256K | . | B800 | WD90C |
 | ::: | T | 132x25 | 9x16 | 1188x400 | 16/256K | . | B800 | Diamond Speedstar 24X |
@@ Line 408: / Line 407: @@
 | ::: | T | 132x43 | 8x11 | . | 16/256K | . | B800 | Trident TVGA 8800/8900 |
 | ::: | G | 94x29 | 8x14 | 752x410 | . | . | . | Lava Chrome II EGA |
-| ::: | G | 128x48 | 8x16 | 1024x768 | 16/256K | . | A000 | ATI VGA Wonder v4+  [5] |
+| ::: | G | 128x48 | 8x16 | 1024x768 | 16/256K | . | A000 | ATI VGA Wonder v4+  ((ATI BIOS v4-1.00 has a text-scrolling bug in this mode)) |
 | ::: | G | . | . | 1024x768 | 16/256K | . | . | ATI VGA Wonder Plus |
 | ::: | G | . | . | 1024x768 | 16/256K | . | . | ATI Ultra 8514A,ATI XL |
-| ::: | G | 128x48 | 8x16 | 1024x768 | 4 | . | A000 | Oak OTI-067/077 chips [8] |
+| ::: | G | 128x48 | 8x16 | 1024x768 | 4 | . | A000 | Oak OTI-067/077 chips ((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)) |
 | 56h | T | 132x43 | 8x8 | . | 3??? | 2 | B000 | NSI Smart EGA+ |
 | ::: | T | 132x43 | 7x9 | . | 4 | . | B000 | Paradise VGA |
@@ Line 418: / Line 417: @@
 | ::: | T | 132x43 | 7x9 | . | 2 | . | . | AT&T VDC600 |
 | ::: | T | 132x43 | 9x8 | . | . | . | . | NEL Electronics BIOS |
-| ::: | T | 132x50 | 8x8 | . | 4 | . | A000 | NCR 77C22 [9] |
+| ::: | T | 132x50 | 8x8 | . | 4 | . | A000 | NCR 77C22 ((this card uses the full 128K A000h-BFFFh range for the video buffer, precluding the use of a monochrome adapter in the same system)) |
 | ::: | T | 132x60 | 8x8 | . | 16/256K | . | B800 | Trident TVGA 8800/8900 |
 | ::: | G | . | . | 1024x768 | 16 | . | A000 | Oak VGA |
-| ::: | G | 128x48 | 8x16 | 1024x768 | 16 | . | A000 | Oak OTI-067/077 chips [8] |
+| ::: | G | 128x48 | 8x16 | 1024x768 | 16 | . | A000 | Oak OTI-067/077 chips ((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)) |
 | 57h | T | 132x25 | 8x14 | . | 3??? | 4 | B000 | NSI Smart EGA+ |
 | ::: | T | 132x25 | 7x16 | . | 4 | . | B000 | Paradise VGA |
@@ Line 429: / Line 428: @@
 | ::: | T | 132x25 | 7x16 | . | 2 | . | . | AT&T VDC600 |
 | ::: | T | 132x25 | 9x14 | . | 16/256K | . | B800 | Trident TVGA 8800/8900 |
-| ::: | T | 132x25 | 8x16 | . | 4 | . | A000 | NCR 77C22 [9] |
+| ::: | T | 132x25 | 8x16 | . | 4 | . | A000 | NCR 77C22 ((this card uses the full 128K A000h-BFFFh range for the video buffer, precluding the use of a monochrome adapter in the same system)) |
-| ::: | G | 96x48 | 8x16 | 768x1024 | 16 | . | A000 | Oak OTI-067/077 chips [8] |
+| ::: | G | 96x48 | 8x16 | 768x1024 | 16 | . | A000 | Oak OTI-067/077 chips ((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)) |
 | 58h | T | 80x33 | 8x14 | . | 16 | . | B800 | ATI EGA Wonder,ATI VIP |
 | ::: | T | 80x32 | 9x16 | . | 16 | . | . | Genoa 6400 |
@@ Line 437: / Line 436: @@
 | ::: | G | 100x75 | 8x8 | 800x600 | 16/256K | . | A000 | Paradise VGA |
 | ::: | G | 100x75 | 8x8 | 800x600 | 16 | . | . | AT&T VDC600 |
-| ::: | G | 100x75 | 8x8 | 800x600 | 16 | . | A000 | NCR 77C22 [9] |
+| ::: | G | 100x75 | 8x8 | 800x600 | 16 | . | A000 | NCR 77C22 ((this card uses the full 128K A000h-BFFFh range for the video buffer, precluding the use of a monochrome adapter in the same system)) |
 | ::: | G | 100x75 | 8x8 | 800x600 | 16 | . | A000 | Diamond Speedstar 24X |
 | ::: | G | 100x75 | 8x8 | 800x600 | 16/256K | . | A000 | Paradise VGA, WD90C |
@@ Line 445: / Line 444: @@
 | ::: | G | . | . | 800x600 | ??? | . | . | ELT VGA PLUS 16 |
 | ::: | G | 100x37 | 8x16 | 800x600 | 16/256K | . | A000 | Cirrus CL-GD5420/5422/5426 |
-| ::: | G | 160x64 | 8x16 | 1280x1024 | 16 | . | A000 | Oak OTI-077 chipset [8] |
+| ::: | G | 160x64 | 8x16 | 1280x1024 | 16 | . | A000 | Oak OTI-077 chipset ((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)) |
 | 59h | T | 80x43 | 9x8 | . | . | . | . | NEL Electronics BIOS |
 | ::: | T | 80x66 | 8x8 | . | 16/256K | . | A000 | ATI VIP |
@@ Line 454: / Line 453: @@
 | ::: | G | . | . | 800x600 | 2 | . | . | Dell VGA |
 | ::: | G | . | . | 800x600 | 2 | . | . | Hewlett-Packard D1180A |
-| ::: | G | 100x75 | 8x8 | 800x600 | 2 | . | A000 | NCR 77C22 [9] |
+| ::: | G | 100x75 | 8x8 | 800x600 | 2 | . | A000 | NCR 77C22 ((this card uses the full 128K A000h-BFFFh range for the video buffer, precluding the use of a monochrome adapter in the same system)) |
-| ::: | G | 128x48 | 8x16 | 1024x768 | 256 | . | A000 | Oak OTI-077 chipset [8] |
+| ::: | G | 128x48 | 8x16 | 1024x768 | 256 | . | A000 | Oak OTI-077 chipset ((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)) |
 | 5Ah | T | 80x60 | 8x8 | . | . | . | . | NEL Electronics BIOS |
 | ::: | T | 132x60 | 9x8 | . | 16/256K | . | B800 | Trident TVGA 8800/8900 |
-| ::: | G | 128x48 | 8x16 | 1024x768 | 2 | . | A000 | NCR 77C22 [9] |
+| ::: | G | 128x48 | 8x16 | 1024x768 | 2 | . | A000 | NCR 77C22 ((this card uses the full 128K A000h-BFFFh range for the video buffer, precluding the use of a monochrome adapter in the same system)) |
 | 5Bh | T | 80x30 | 8x16 | . | . | . | B800 | ATI VGA Wonder (undoc) |
 | ::: | G | . | . | 640x350 | 256 | . | . | Genoa 6400 |
-| ::: | G | 80x25 | 8x16 | 640x400 | 32K | . | A000 | Oak OTI-067/077 chips [8] |
+| ::: | G | 80x25 | 8x16 | 640x400 | 32K | . | A000 | Oak OTI-067/077 chips ((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)) |
 | ::: | G | . | . | 800x600 | 16 | . | . | Maxxon, SEFCO TVGA, Imtec |
 | ::: | G | 100x75 | 8x8 | 800x600 | 16/256K | . | A000 | Trident TVGA 8800, 8900 |
 | ::: | G | . | . | 800x600 | ??? | . | . | Vobis MVGA |
 | ::: | G | 100x37 | 8x16 | 800x600 | . | . | . | NEL Electronics BIOS |
-| ::: | G | 128x48 | 8x16 | 1024x768 | 16 | . | A000 | NCR 77C22 ((interlaced only)) [9] |
+| ::: | G | 128x48 | 8x16 | 1024x768 | 16 | . | A000 | NCR 77C22 ((interlaced only)) ((this card uses the full 128K A000h-BFFFh range for the video buffer, precluding the use of a monochrome adapter in the same system)) |
 | 5Ch | T | 100x37 | 8x16 | . | . | . | . | NEL Electronics BIOS |
 | ::: | G | . | . | 640x400 | 256 | . | . | Logix, ATI Prism Elite |
@@ Line 473: / Line 472: @@
 | ::: | G | 80x25 | 8x16 | 640x400 | 256/256K | . | A000 | Trident TVGA 8800/8900 |
 | ::: | G | 80x30 | 8x16 | 640x480 | 256 | . | . | Genoa 6400 |
-| ::: | G | 80x30 | 8x16 | 640x480 | 32K | . | A000 | Oak OTI-077 chipset [8] |
+| ::: | G | 80x30 | 8x16 | 640x480 | 32K | . | A000 | Oak OTI-077 chipset ((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)) |
-| ::: | G | 100x75 | 8x8 | 800x600 | 256 | . | A000 | NCR 77C22 [9] |
+| ::: | G | 100x75 | 8x8 | 800x600 | 256 | . | A000 | NCR 77C22 ((this card uses the full 128K A000h-BFFFh range for the video buffer, precluding the use of a monochrome adapter in the same system)) |
 | ::: | G | 100x75 | 8x8 | 800x600 | 256/256K | . | A000 | WD90C |
 | ::: | G | 100x75 | 8x8 | 800x600 | 256/256K | . | A000 | Diamond Speedstar 24X |
@@ Line 484: / Line 483: @@
 | ::: | G | 80x30 | 8x16 | 640x480 | 256/256K | . | A000 | Zymos Poach, Hi Res 512 |
 | ::: | G | 80x30 | 8x16 | 640x480 | 256/256K | . | A000 | Trident TVGA 8800 (512K) |
-| ::: | G | 128x48 | 8x16 | 1024x768 | 16 | . | A000 | NCR 77C22 [9] |
+| ::: | G | 128x48 | 8x16 | 1024x768 | 16 | . | A000 | NCR 77C22 ((this card uses the full 128K A000h-BFFFh range for the video buffer, precluding the use of a monochrome adapter in the same system)) |
 | ::: | G | 128x48 | 8x16 | 1024x768 | 16/256K | . | A000 | WD90C |
 | ::: | G | 128x48 | 8x16 | 1024x768 | 16 | . | A000 | Diamond Speedstar 24X |
@@ Line 492: / Line 491: @@
 | ::: | G | . | . | 640x400 | 256 | . | . | Compaq VGA, Dell VGA |
 | ::: | G | 80x25 | 8x16 | 640x400 | 256 | . | . | AT&T VDC600 |
-| ::: | G | 80x25 | 8x16 | 640x400 | 256 | . | A000 | NCR 77C22 [9] |
+| ::: | G | 80x25 | 8x16 | 640x400 | 256 | . | A000 | NCR 77C22 ((this card uses the full 128K A000h-BFFFh range for the video buffer, precluding the use of a monochrome adapter in the same system)) |
 | ::: | G | 80x25 | 8x16 | 640x400 | 256/256K | . | A000 | WD90C |
 | ::: | G | 80x25 | 8x16 | 640x400 | 256/256K | . | A000 | Diamond Speedstar 24X |
@@ Line 506: / Line 505: @@
 | ::: | G | . | . | 640x480 | 256 | . | . | Hewlett-Packard D1180A |
 | ::: | G | 80x30 | 8x16 | 640x480 | 256 | . | . | AT&T VDC600 (512K) |
-| ::: | G | 80x30 | 8x16 | 640x480 | 256 | . | A000 | NCR 77C22 [9] |
+| ::: | G | 80x30 | 8x16 | 640x480 | 256 | . | A000 | NCR 77C22 ((this card uses the full 128K A000h-BFFFh range for the video buffer, precluding the use of a monochrome adapter in the same system)) |
 | ::: | G | 80x30 | 8x16 | 640x480 | 256/256K | . | A000 | WD90C |
 | ::: | G | 80x30 | 8x16 | 640x480 | 256/256K | . | A000 | Diamond Speedstar 24X |
@@ Line 545: / Line 544: @@
 | ::: | G | . | . | 720x540 | 16 | . | . | Video7 V-RAM VGA |
 | ::: | G | 96x64 | 8x16 | 768x1024 | 16/256K | . | A000 | Trident TVGA 88/8900 512K |
-| ::: | G | 128x48 | 8x16 | 1024x768 | 256 | . | A000 | NCR 77C22 ((interlaced only)) [9] |
+| ::: | G | 128x48 | 8x16 | 1024x768 | 256 | . | A000 | NCR 77C22 ((interlaced only)) ((this card uses the full 128K A000h-BFFFh range for the video buffer, precluding the use of a monochrome adapter in the same system)) |
 | ::: | G | 144x54 | 8x16 | 1152x864 | . | . | A000 | Diamond Stealth64 Video 2xx1 |
 | 62h | T | 132x32 | 8x11 | . | 16/64 | 6 | B800 | Quadram Ultra VGA |
@@ Line 561: / Line 560: @@
 | ::: | G | 100x75 | 8x8 | 800x600 | 256 | 1 | A000 | Ahead A, Ahead B (512K) |
 | ::: | G | 128x48 | 8x16 | 1024x768 | 256/256K | . | A000 | Trident TVGA 8900, Zymos |
-| ::: | G | 128x48 | 8x16 | 1024x768 | 256 | . | A000 | NCR 77C22 [9] |
+| ::: | G | 128x48 | 8x16 | 1024x768 | 256 | . | A000 | NCR 77C22 ((this card uses the full 128K A000h-BFFFh range for the video buffer, precluding the use of a monochrome adapter in the same system)) |
 | 63h | T | 132x44 | 8x8 | . | 16/64 | 5 | B800 | Quadram Ultra VGA |
 | ::: | T | 132x44 | 8x8 | . | 16 | . | . | Genoa 6400 |
@@ Line 597: / Line 596: @@
 | ::: | G | . | . | 800x600 | 32K | . | A000 | Cirrus CL-GD 5422/5426 |
 | ::: | G | 128x48 | 8x16 | 1024x768 | 4 | . | A000 | ATI VGA Wonder |
-| ::: | G | 160x64 | 8x16 | 1280x1024 | 16 | . | A000 | NCR 77C22 ((interlaced only)) [9] |
+| ::: | G | 160x64 | 8x16 | 1280x1024 | 16 | . | A000 | NCR 77C22 ((interlaced only)) ((this card uses the full 128K A000h-BFFFh range for the video buffer, precluding the use of a monochrome adapter in the same system)) |
 | 68h | G | 80x25 | 8x16 | 640x400 | . | . | A000 | Diamond Stealth64 Video 2xx1 |
 | 69h | T | 132x50 | 8x8 | 1056x400 | 16/256K | . | B800 | WD90C |
@@ Line 615: / Line 614: @@
 | ::: | G | 100x42 | 8x14 | 800x600 | . | . | A000 | ATI VGA Wonder (undoc) |
 | ::: | G | . | . | 800x600 | 16 | . | A000 | Chips&Technologies chipset
-| ::: | G | 160x64 | 8x16 | 1280x1024 | 256 | . | A000 | NCR 77C22 ((interlaced only)) [9] |
+| ::: | G | 160x64 | 8x16 | 1280x1024 | 256 | . | A000 | NCR 77C22 ((interlaced only)) ((this card uses the full 128K A000h-BFFFh range for the video buffer, precluding the use of a monochrome adapter in the same system)) |
 | 6Bh | T | 100x37 | 8x16 | . | 16 | . | . | Genoa 6400 |
 | ::: | T | 100x37 | 8x16 | . | . | . | . | NEL Electronics BIOS |
@@ Line 711: / Line 710: @@
 | ::: | G | 100x37 | 8x16 | 800x600 | 256 | . | . | C&T 82C453/F65530 chipsets |
 | ::: | G | 100x37 | 8x16 | 800x600 | 256 | . | A000 | Chips&Technologies 64310 |
-| ::: | G | 200x75 | 8x16 | 1600x1200 | .[16] | . | A000 | Diamond Stealth64 Video 2xx1 |
+| ::: | G | 200x75 | 8x16 | 1600x1200 | .((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))) | . | A000 | Diamond Stealth64 Video 2xx1 |
 | 7Dh | G | 64x32 | 8x16 | 512x512 | 256 | . | . | Genoa |
 | 7Eh | special mode set (see AX=007Eh)	|||||| . | Paradise VGA, AT&T VDC600 |
@@ Line 717: / Line 716: @@
 | ::: | G | . | . | 1024x768 | 256 | . | . | C&T 82C453 chipset |
 | ::: | G | 128x48 | 8x16 | 1024x768 | 256 | . | A000 | Chips&Technologies 64310 |
-| ::: | G | 90x43 | . | . | mono | . | B000 | HERCULES.COM on HGC [14] |
+| ::: | G | 90x43 | . | . | mono | . | B000 | HERCULES.COM on HGC ((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.)) |
 | 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] |
+| ::: | G | 90x29 | . | . | mono | . | B000 | HERCULES.COM on HGC ((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.)) |
-| 82h | T | 80x25 | . | . | B&W | . | . | AT&T VDC overlay mode [6] |
+| 82h | T | 80x25 | . | . | B&W | . | . | AT&T VDC overlay mode ((for AT&T VDC overlay modes, BL contains the DEB mode, which may be 06h, 40h, or 44h)) |
-| 83h | T | 80x25 | . | . | . | . | . | AT&T VDC overlay mode [6] |
+| 83h | T | 80x25 | . | . | . | . | . | AT&T VDC overlay mode ((for AT&T VDC overlay modes, BL contains the DEB mode, which may be 06h, 40h, or 44h)) |
-| 86h | G | . | . | 640x200 | B&W | . | . | AT&T VDC overlay mode [6] |
+| 86h | G | . | . | 640x200 | B&W | . | . | AT&T VDC overlay mode ((for AT&T VDC overlay modes, BL contains the DEB mode, which may be 06h, 40h, or 44h)) |
 | 88h | G | 90x43 | 8x8 | 720x348 | mono | . | B000 | Hercules + MSHERC.COM |
-| C0h | G | . | . | 640x400 | 2/prog palette | . | . | AT&T VDC overlay mode [6] |
+| C0h | G | . | . | 640x400 | 2/prog palette | . | . | AT&T VDC overlay mode ((for AT&T VDC overlay modes, BL contains the DEB mode, which may be 06h, 40h, or 44h)) |
 | ::: | G | . | . | 640x400 | 2/prog palette | . | . | Olivetti Quaderno overlay |
-| C4h | disable output ||| . | . | . | . | AT&T VDC overlay mode [6] |
+| C4h | disable output ||| . | . | . | . | AT&T VDC overlay mode ((for AT&T VDC overlay modes, BL contains the DEB mode, which may be 06h, 40h, or 44h)) |
 | C8h | G | 80x50 | 8x8 | 640x400 | 2 | . | B800 | Olivetti Quaderno overlay |
 | D0h | G | . | . | 640x400 | 2 | . | B800 | DEC VAXmate AT&T mode |
-===== Notes =====
-[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,
-h 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,
-h, 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 1990/09/14, but not
-      v8.01X dated 1992/02/28; mode 21h supported by 1992/02/28 version but not
-/09/14 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
-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