**************************** VIDEO MODES *********************************** ASM32 video mode subroutines (C) Copyright 1993 Douglas Herr All rights reserved 같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같� HGRAPH: establishes Hercules graphics mode, pages 0 & 1 HGRAPH0: establishes Hercules graphics mode, clear page 0 only Source: hgraph.asm ($herc.asm, $hmode.asm) Hercules or compatible required (including Hercules InColor) Call with: no parameters Returns: if CF = 1, no Hercules installed if CF = 0, AX = code for Hercules model 128 = HGC 144 = HGC+ 208 = InC Uses: AX, ECX, CF Supports: Hercules graphics cards and compatibles: graphics mode see also Use64k in SYSTEM.DOC Example: call hgraph ; establish graphics mode jc no_hercules ; drat! 같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같� HRAM8029: establish an 80-column, 29-row RamFont mode, loading a standard 8x12 character font in RAM Source: hram8029.asm ($herc.asm, $hmode.asm, $h8x12.asm, f8x12rle.asm, $rld.asm) HRAM8043: establish an 80-column, 43-row RamFont mode, loading a standard 8x8 character font in RAM Source: hram8043.asm ($herc.asm, $hmode.asm, $h8x8.asm, f8x8.asm) HRAM9025: establish a 90-column, 25-row RamFont mode using standard ROM characters Source: hram9025.asm ($herc.asm, $hmode.asm) HRAM9029: establish a 90-column, 29-row RamFont mode, loading a standard 8x12 character font in RAM Source: hram9029.asm ($herc.asm, $hmode.asm, $h8x12.asm, f8x12lre.asm, $rld.asm) HRAM9043: establish a 90-column, 43-row RamFont mode, loading a standard 8x8 character font in RAM Source: hram9043.asm ($herc.asm, $hmode.asm, $h8x8.asm, f8x8.asm) Hercules RamFont card required (including Hercules InColor) Note: use htext to restore normal 80 x 25 text mode Call with: no parameters Returns: if CF = 1, no RamFont card installed if CF = 0, AX = code for Hercules model 144 = HGC+ 208 = InC Uses: AX, CF; all other flags and registers are saved Supports: HGC+ and InC cards: 4k RamFont mode Example: call hram8043 ; RamFont mode: 80x43 jc no_ramfont ; drat! 같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같� HTEXT: establish (or restore) Hercules text mode Source: htext.asm ($herc, $hmode) Call with: no parameters Returns: if CF = 1, no Hercules installed if CF = 0, AX = code for Hercules model 128 = HGC 144 = HGC+ 208 = InC Uses: AX, CF Supports: Hercules graphics cards and compatibles: text mode (including Hercules InColor) Example: call htext ; Hercules text mode jc no_herc ; drat! 같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같� TOCOLOR: switches system to color text mode; may be used to switch monitors on a 2-monitor system, or to switch to the standard 80-column, 25-rows color mode from other color modes Source: tocolor.asm ($6845.asm) Call with: no parameters Returns: CF = 1 if no color monitor CF = 0 if successful Uses: CF; all registers and all other flags are saved Example: extrn tocolor:near include codeseg.inc . . . call tocolor jc no_color . . . 같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같� TOMONO: switches system to monochrome text mode; may be used either to switch active monitors on a 2-monitor sysem or to switch to monchrome text mode (80x25) from graphics mode (EGA or Hercules). Source: tocolor.asm ($6845.asm) Call with: no parameters Returns: CF = 1 if no monochrome or InColor monitor CF = 0 if successful Uses: CF; all registers and all other flags are saved Example: extrn tomono:near include codeseg.inc . . . call modemono jc no_mono . . . 같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같� MODE43: switch EGA to 80x43 text mode or VGA to 80x50 text mode Mode43 switches an EGA to the 80-column, 43-row text mode from any color mode or any EGA monochrome mode, or switches a color VGA to 80x50 text mode from any other color mode. Source: mode43.asm Call with: no parameters Returns: if CF = 1, AX = 0 if no EGA or VGA in system AX = -1 if EGA connected to CGA monitor if CF = 0, AX = 3 if EGA or VGA connected to color monitor AX = 7 if EGA or VGA connected to monochrome monitor Uses: AX, CF; all other registers and flags are saved Example: call mode43 jc noega 같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같 SVGA132: set 132-column text mode on supported SEGA and SVGA systems Source: svga132.asm ($sega.asm, $svga.asm) Call with: AX = mode number 0 = 25 rows 1 = 30 rows (approx) 2 = 43 rows (approx) 3 = 50 rows (SVGA only) 4 = 60 rows (SVGA only) Returns: if CF = 0, no error if CF = 1, mode not supported Uses: flags Example: include model.inc public set132mode extrn svga132:near include codeseg.inc set132mode proc near mov ax,4 try_to_set_mode: call svga132 jnc short all_done ; all done if it worked sub ax,1 ; else try next lower mode number jnc try_to_set_mode ; unless modes exhausted ; then exit with CF = 1 all_done: ret 같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같 SVGA16: set Super VGA mode Source: svga16.asm (banks.asm, $graph.asm) Call with: AX = 16-color mode desired AX = 0 for 800x600 AX = 1 for 1024x768 ASM32's SVGA subroutines are derived from John Bridges' public domain VGAKIT board identification and bank switching code. Boards supported are: Ahead Technologies ATI Chips & Technologies Cirrus Everex Genoa GVGA NCR Oak Technologies Paradise (Western Digital) Trident Trident 8900 Tseng (Genoa, Orchid, Willow) Tseng 4000 VESA standard Video 7 I have not been able to test SVGA16 on all boards; please let me know if you encounter difficulties. Note that not all modes are supported by all boards; be sure to check CF after calling SVGA16. Returns: if CF = 0, AX = extended BIOS mode number if CF = 1, requested mode is not available SVGA16 cannot determine if the monitor you are using will work with the requested mode. Monitor damage may result from improper use of SVGA16. Example: public mygraph extrn svga16:near include codeseg.inc mygraph proc near ; I want to use a 16-color 1024x768 mode if available mov ax,1 ; specify 1024x768 mode call svga16 jc short no_svga 같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같 SVGA256: set Super VGA 256-color mode Source: svga256.asm (banks.asm) Call with: AX = 256-color mode desired AX = 0 for 640x400 AX = 1 for 640x480 AX = 2 for 800x600 AX = 3 for 1024x768 ASM32's SVGA256 subroutines are derived from John Bridges' public domain VGAKIT board identification and bank switching code. Equipment supported is listed under SVGA16, plus: Compaq (640x480 only) Returns: if CF = 0, AX = extended BIOS mode number if CF = 1, requested mode is not available SVGA256 cannot determine if the monitor you are using will work with the requested mode. Monitor damage may result from improper use of SVGA256. Example: see SVGA16 같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같 SVGA32k: set Super VGA 32k-color mode Source: svga32k.asm (banks.asm) Call with: AX = 32k-color mode desired AX = 0 for 320x200 AX = 1 for 640x480 AX = 2 for 800x600 AX = 3 for 1024x768 AX = 4 for 1280x1024 Equipment supported is: Trident 8900 (640x480, 800x600) VESA Returns: if CF = 0, AX = extended BIOS mode number if CF = 1, requested mode is not available SVGA32k cannot determine if the monitor you are using will work with the requested mode. Monitor damage may result from improper use of SVGA32k. Example: see SVGA16 같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같� VGA13X: changes standard VGA systems to undocumented 256-color graphics modes. ASM32 graphics subroutines support 4 VGA13X modes with up to 4 pages. See also XModeClear. VGA13X is derived from public domain code from John Bridges and Themie Gouthas. Source: vga13x.asm (crtc.13x, $graph.asm) Call with: AX = VGA13X mode number 0 = 320 x 200, 4 pages 1 = 320 x 240, 3 pages 2 = 320 x 400, 2 pages 3 = 360 x 480, 1 page Returns: nothing Uses: nothing Supports: VGA or SVGA only: graphics mode Example: extrn vga13x:proc include codeseg.inc . . . call getcrt cmp al,3 jne short oops ; do something else if no VGA mov ax,2 ; 320 x 400, 2 pages call vga13x 같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같같� XMODE16: establish SuperEGA/SuperVGA graphics mode and configure ASM32 graphics subroutines to work with the mode. XMODECLEAR: restore ASM32's default graphics configuration Source: xmode16.asm ($graph.asm) Parameters: maximum x, maximum y, registers as required to set mode. XMode16 assumes that the mode is set with AH = 0. Returns: nothing Uses: All registers and flags saved. Supports: 16-color EGA/VGA-style graphics modes, up to 800 x 600 pixels. Various equipment. You must have the required equipment and use the correct mode number; hardware damage may result from improper use of XMode16. I cannot be held responsible for damage resulting from use or misuse of XMode16. Use XMode16 if your equipment is not supported by SVGA16. If 800 horizontal pixels are available, maxX% should be 799. Similarly, if 600 vertical pixels are possible, maxY% should be 599. Your graphics card manual lists mode numbers, monitor requirements, and the number of horizontal and vertical pixels corresponding to the mode. Mode numbers are usually in hex format. Some modes and corresponding mode numbers are listed on the next pages. Equipment mode mode number Example Orchid ProDesigner 800x600 29h mov ax,799 STB EM/16 push ax Genoa mov ax,599 Sigma X16 push ax (Tseng chip set) mov al,29h call xmode16 Everex MED EGA 640X480 AL = 70h, BL = 00h (Micro Enhancer Deluxe) 752x410 AL = 70h, BL = 01h mov ax,751 push ax mov ax,409 push ax mov al,70h mov bl,01h call xmode16 ATI VGA Wonder 800x600 54h mov ax,799 push ax mov ax,599 push ax mov al,54h call xmode16 ATI VIP 800x560 53h mov ax,799 push ax mov ax,559 push ax mov al,53h call xmode16 (continued) Paradise Plus-16 800x600 58h mov ax,799 Paradise Professional push ax mov ax,599 push ax mov al,58h call xmode16 Video 7 Fastwrite 800x600 62h mov ax,799 Video 7 VRAM push ax mov ax,599 push ax mov al,62h call xmode16 Western Digital 800x600 6Ah (color) mov ax,799 6Bh (mono) push ax (VESA modes) mov ax,599 push ax mov al,6Ah ; color call xmode16 If any of this information conflicts with the specifications in your video card's instruction manual, the manual's recommendation is a safer bet. Note that all the above modes require a multi-frequency monitor. When you're all done with Graphics mode, CALL ModeColor to return to 80x25 text mode, and CALL XModeClear to reset ASM32's graphics mode flags.