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- VGAKIT Version 4.1
-
- Hi, here is my latest SVGA/VGA info pack. I've included the .OBJ versions
- in case anyone who does not have an assembler wants to play with these routines.
-
-
- The included modules are:
-
-
- EXAMPLE.C is a silly C program which shows that this code works,
- it just plots a nice calculated pattern using the
- point functions.
-
-
- MKEXAMP.BAT batch file to compile and link EXAMPLE.C into EXAMPLE.EXE
- for Microsoft C 6.0
-
- STICKS.C is another silly C program which shows that this code works,
- it uses the line function to draw a LOT of lines to make a
- very nice complex weave type pattern. Amazing how complex the
- image gets from such a trivial program.
-
-
- MKSTICKS.BAT batch file to compile and link STICKS.C into STICKS.EXE
- for Microsoft C 6.0
-
-
- BANKS.ASM SVGA bank switch code, used to address the beyond 64k
- addressing sceams of the various SVGA chipsets. Also
- includes a global variable "curbk" which is the current
- hardware bank number which can be checked before each
- bank switch to prevent the extra overhead of switching
- into a currently selected bank. An example of this is
- in the point routine in POINT.ASM which only switches
- memory banks when required.
- BANKS.ASM includes the global variables ativga,tseng, tseng4
- trident,video7,everex,paradise,chipstech, aheada, aheadb,
- oaktech and vga512. These variables are set by the WHICHVGA()
- function which must be called at program startup time to
- determine which SVGA (if any) you have installed. This
- function returns a 1 (true) if you have a SVGA card installed.
-
-
- MODE13X.ASM Is the function to setup the non-standard (ie: not supported
- by the BIOS) 360x480x256 mode, this mode works on virtually
- VGA that is fully IBM compatable. It's a great mode for
- those without SVGA capabilities.
-
- SVGAMODE.ASM Is a limited function which sets up 640x480x256 color
- mode on a SVGA, it uses the global chipset flags to
- determine the BIOS mode number.
-
- POINT.ASM Is a pair of simple point plotting functions,
-
- point(xpos,ypos,color)
-
- which plots a point at x,y coorinates xpos,ypos in SVGA
- modes calling newbank() in BANKS.ASM to switch memory
- banks when necessary.
-
- point13x(xpos,ypos,color)
-
- which plots a point at x,y coorinates xpos,ypos in 360x480
- mode. Both point functions will clip at screen boundries
- correctly.
-
-
- XPOINT.ASM Is just like POINT.ASM except that it's point functions draw
- the points XOR'd to the screen.
-
- xpoint(xpos,ypos,color)
- xpoint13x(xpos,ypos,color)
-
-
- RDPOINT.ASM Is just like POINT.ASM except that instead of plotting points
- it reads the color of screen pixel.
-
- color=rdpoint(xpos,ypos)
- color=rdpoint13x(xpos,ypos)
-
- LINE.ASM Is a line plotting function callable from C, you pass it the
- coordinates for the two end points of the line, the color to
- draw the line in and the function to call to plot each point.
-
- bline(x1,y1,x2,y2,color,xpoint);
-
-
- here is a list of VGA Chipset producers and their BIOS mode numbers:
-
- ===============================================================================
-
- AHEAD
- -----
- width height colors Direct Mode
- ----- ------ ------ -----------
- 0x6A 800 600 16 Q
- 0x71 800 600 16 Q
- 0x74 1024 768 16 V
- 0x60 640 400 256 R
- 0x61 640 480 256 S
- 0x62 800 600 256 T
-
- AX=MODE
-
- ===============================================================================
-
- ATI
- ---
- width height colors Direct Mode
- ----- ------ ------ -----------
- 0x54 800 600 16 Q
- 0x65 1024 768 16 V
- 0x61 640 400 256 R
- 0x62 640 480 256 S
- 0x63 800 600 256 T
-
- AX=MODE
-
- ===============================================================================
-
- CHIPS & TECH
- ------------
- width height colors Direct Mode
- ----- ------ ------ -----------
- 0x70 800 600 16 Q
- 0x72 1024 768 16 V
- 0x78 640 400 256 R
- 0x79 640 480 256 S
- 0x7b 800 600 256 T
-
- AX=MODE
-
- ===============================================================================
-
- EVEREX
- ------
- width height colors Direct Mode
- ----- ------ ------ -----------
- 0x01 752 410 16
- 0x02 800 600 16 Q
- 0x11 1280 350 4
- 0x12 1280 600 4
- 0x13 640 350 256
- 0x14 640 400 256 R
- 0x15 512 480 256
- 0x20 1024 768 16 V
- 0x30 640 480 256 S
- 0x31 800 600 256 T
-
- AX=0x70 BL=MODE
-
- ===============================================================================
-
- OAK TECH
- --------
- width height colors Direct Mode
- ----- ------ ------ -----------
- 0x52 800 600 16 Q
- 0x53 640 480 256 S
- 0x54 800 600 256 T
- 0x56 1024 768 16 V
-
- AX=MODE
-
- ===============================================================================
-
- GENOA GVGA
- ----------
- width height colors Direct Mode
- ----- ------ ------ -----------
- 0x7c 512 512 16
- 0x59 720 512 16
- 0x79 or 0x6a 800 600 16 Q
- 0x7d 512 512 256
- 0x5b 640 350 256
- 0x7e 640 400 256 R
- 0x5c 640 480 256 S
- 0x5d 720 512 256
- 0x5e or 0x6c 800 600 256 T
- 0x7f 1024 768 4
- 0x5f 1024 768 16 V
-
- AX=MODE
-
- ===============================================================================
-
- NCR
- ---
- width height colors Direct Mode
- ----- ------ ------ -----------
- 0x59 800 600 2 P
- 0x58 800 600 16 Q
- 0x5e 640 400 256 R
- 0x5f 640 480 256 S
- 0x5c 800 600 256 T
- 0x5a 1024 768 2 U
- 0x5d 1024 768 16 V
-
- AX=MODE
-
- ===============================================================================
-
- PARADISE
- --------
- width height colors Direct Mode
- ----- ------ ------ -----------
- 0x59 800 600 2 P
- 0x58 800 600 16 Q
- 0x5e 640 400 256 R
- 0x5f 640 480 256 S
- 0x5d 1024 768 16 V
-
- AX=MODE
-
- ===============================================================================
-
- TRIDENT
- -------
- width height colors Direct Mode
- ----- ------ ------ -----------
- 0x5b 800 600 16 Q
- 0x5f 1024 768 16 V
- 0x5c 640 400 256 R
- 0x5d 640 480 256 S
- 0x5e 800 600 256 T
-
- AX=MODE
-
- ===============================================================================
-
- TRIDENT 8900
- ------------
- width height colors Direct Mode
- ----- ------ ------ -----------
- 0x5b 800 600 16 Q
- 0x5c 640 400 256 R
- 0x5d 640 480 256 S
- 0x5e 800 600 256 T
- 0x60 1024 768 4
- 0x5f 1024 768 16 V
- 0x62 1024 768 256 X
-
- AX=MODE
-
- ===============================================================================
-
- TSENG (Genoa, Orchid, Willow)
- -----
- width height colors Direct Mode
- ----- ------ ------ -----------
- 0x29 800 600 16 Q
- 0x37 1024 768 16 V
- 0x2d 640 350 256 R
- 0x2e 640 480 256 S
- 0x2f 720 512 256
- 0x30 800 600 256 T
- 0x38 1024 768 256 X
-
- AX=MODE
-
- ===============================================================================
-
- TSENG 4000
- ----------
- width height colors Direct Mode
- ----- ------ ------ -----------
- 0x29 800 600 16 Q
- 0x37 1024 768 16 V
- 0x2d 640 350 256
- 0x2f 640 400 256 R
- 0x2e 640 480 256 S
- 0x30 800 600 256 T
- 0x38 1024 768 256 X
-
- AX=MODE
-
- ===============================================================================
-
- VIDEO7
- ------
- width height colors Direct Mode
- ----- ------ ------ -----------
- 0x60 752 410 16
- 0x61 720 540 16
- 0x62 800 600 16 Q
- 0x63 1024 768 2 U
- 0x64 1024 768 4
- 0x65 1024 768 16 V
- 0x66 640 400 256 R
- 0x67 640 480 256 S
- 0x68 720 540 256
- 0x69 800 600 256 T
- 0x6A 1024 768 256 X
-
- AX=0x6f05 BL=MODE
-
- ===============================================================================
-
-
-
- John Bridges 10/2/1991
-
- CIS:75300,2137
- GENIE:J.BRIDGES
- BIX:JBRIDGES
-
-
-
