556 lines
21 KiB
Plaintext
556 lines
21 KiB
Plaintext
Compaq Super VGA chips.
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There are 3 "Families" of Compaq VGA chips:
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Integrated Video Graphics System (IVGS aka Starlight):
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Supports 640x480x16c. BitBLT functions
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Advanced VGA System (AVGA aka Stardust):
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Supports 800x600x16c and 640x480x256c. BitBLT functions.
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QVision:
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Supports 1024x768x256c. Newer versions support 1280x1024 and/or TrueColor.
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Hardware Cursor, BitBLT.
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QVision (128084) Max 1MB (Victory)
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QVision 1024 Max 2MB (V32 ?)
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QVision 1280 (139148) Max 2MB (V32)
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The QVision 2000 is actually a Matrox MGA-II (Ultima) clone.
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3C2h (W): Miscellaneous
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bit 2-4 (QVision) Clock select. In AVGA mode the two lower bits selects
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one of 4 clocks, in QVision mode (3CEh index 0Fh <> A5h) these
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3 bits selects 1 of 8 other clocks, thus there are 12 clocks
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available on the QVision.
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Note: This is a standard VGA register, all other bits follow VGA standard.
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This register can be read at 3CCh.
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3CEh index 0Bh (R/W):
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bit 0 ??
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1 If set the ROM is 16bit wide, 8 if clear
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2 If set video memory is 16bit wide, 8 if clear
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3 Blanks screen if set ??
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4 ??
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3CEh index 0Ch (R): Controller Version
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bit 3-7 Version.
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03h: IVGS
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05h: AVGA
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06h: Original QVision
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0Eh: QVision 1024 or 1280
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10h: Advanced VGA Port (What is this?)
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3CEh index 0Dh (R/W): Extended Controller Version
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3CEh index 0Eh (R/W): Extended Controller Capabilities
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3CEh index 0Fh (R/W): Environment Register
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bit 0-3 writing 5 to this register unlocks the extended registers.
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4-7 (QVision) 0Ah if in AVGA mode, 0 if in QVision mode
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Note: The QVision has a specific mode for AVGA support (Mode 29h and 2Eh),
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where the AVGA accelerator function and registers are used.
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3CEh index 10h (R/W): BLTConf
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bit 0-1 ??
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2 (QVision) If set the 2xxxh-3xxxh register block is mapped at 4xxxh
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-5xxxh
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3-4 (chip ?) Video interrupt. 0= Active Low, 1,3=Active High, 2=Disabled.
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3 (QVision) If set enables access to some of the extended registers ?
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5 Tri-state if set
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6 ??
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7 (AVGA) If set the screen goes all white or black ?
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3CEh index 11h (R/W):
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bit 0 ??
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3CEh index 40h (R/W): Control Register 0
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bit 0 If set accesses to the upper bank (0A8000h-0AFFFFh) are calculated
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from 0A8000h (I.e.. to create a 64K unified window index 46h should
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be programmed with a value 8 larger than index 45h). If clear
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accesses are relative to 0A0000h (I.e.. use same value in index 45h
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and 46h).
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1 If set the memory layout is different ?
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2-7 ??
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3CEh index 41h (R/W):
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bit 0-2 ??
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3CEh index 42h (R/W): CRTC Overflow
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bit 0-1 Bit 8-9 of the Display Offset. Bits 0-7 are in 3d4h index 13h.
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2-4 Display start Address bits 16-18. Bits 0-15 are in 3d4h index
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0Ch,0Dh
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5 ??
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6 If set moves the display ~50 lines ??
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7 ??
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3CEh index 43h (R/W):
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bit 0-7 ??
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3CEh index 44h (R/W):
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bit 0-7 ??
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3CEh index 45h (R/W): Page Register 0
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bit 0-7 Bank number in 4KB blocks for accesses to A000h-A7FFh.
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(AVGA) In 16c planar modes the bank is in units of 1Kb
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(QVision 1280) If 23C7h bit 4 is set the bank is in units of 16Kb
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3CEh index 46h (R/W): Page Register 1
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bit 0-7 Bank number in 4KB units for accesses to A800h-AFFFh
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If index 40h bit 0 is set this value must be 8 larger than the value
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in index 45h (8*4k = 32k) to provide a 64k unified window. If index
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40h bit 0 is clear this value should be the same as in index 45h.
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3CEh index 48h (R/W):
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bit 0-3 High Area Memory (0=disabled, 1-0Eh = the 1MB boundary the HMA
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starts at). The HMA is a 1MB continuos mapping of the video buffer.
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0-7 (QVision) Lower 8 bits of the HMA start address
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3CEh index 49h (R/W):
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bit 0-7 (QVision) Upper 8 bits of the HMA start address
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3CEh index 50h (R/W): (QVision)
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bit 0-2 ??
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3-6 Monitor (0,2,6??)
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00h Compaq Internal Monitor
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02h Compaq 16" Advanced Graphics Color Monitor
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03h Compaq 1024 Color Monitor
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04h QVision 200 (20") Color Monitor
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05h Compaq SVGA Color Monitor
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06h QVision 150 (15") Color Monitor or
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Compaq 151 FS Color Monitor
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0Eh Compaq 14" VGA Monitor (31.5 kHz)
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7 ??
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3CEh index 51h (R/W): (QVision)
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bit 0 Divides clock by ~3.5 if set ???
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1-2 ??
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3 If clear blanks the left half of the display ??
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4 Clock ??
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5 Horizontal Retrace End bit 5. Bits 0-4 are in 3d4h index 5 bits 0-4.
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6 Vertical Total bit 10. Bits 0-7 are in 3d4h index 6, bits 8&9 are
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in 3d4h index 7.
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7 Vertical Retrace Start bit 10. Bits 0-7 are in 3d4h index 10h.
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3CEh index 52h (R/W):
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bit 0
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3CEh index 54h (R/W): Available Memory (QVision)
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bit 0-7 Video Memory. 2: 512k, 4: 1024k, 8: 2048k
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Note: For the QVision 1024, 0 apparently means 1024KB.
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3CEh index 55h (R/W): PLL Clock
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bit 0-7 ??
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3CEh index 56h (R/W): Controller Capabilities (QVision)
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bit 0-1 ??
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2 Set for QVision 1280, clear for QVision 1024
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3-7 ??
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3CEh index 57h (R/W): Controller Capabilities II (QVision)
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bit 0-7 ??
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3CEh index 5Ah (R/W): (QVision)
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bit 0-5 1 for copy, 2 for fill
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6-7 Set to 3 or 0 ??
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3CEh index 80h (R/W): (?)
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bit 2-3 2=Plasma system.
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4-6 Palette option: 1=Standard palette, 2=Option B, 5=option A,
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6=option C.
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3CEh index 81h (R/W): (?)
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bit 2 Set for Palette option A-C and Standard palette, clear for option D.
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13C6h - 13C9h are implemented as DAC regs REG0A,REG0B,REG08 and REG09 for the
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QVision (DAC has RS2 = 0 and RS3 = 1).
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23C0h W(R/W): Source Address (IVGS, AVGA only)
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bit 0-15 Address of source in DWORDs (256colors) or bytes (16colors).
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(AVGA) Bit 16-17 are in 23C4h.
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The exact address and size of the BitBLT can be adjusted by
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33C0h,33C1h,33C8h and 33C9h
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23C2h (R/W): Width of area (IVGS, AVGA only)
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bit 0-7 Width in DWORDs of the Blit area.
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23C2h W(R/W): Width of BitBLT operation (QVision only)
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bit 0-9 Width of the BitBLT area in pixels
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23C4h W(R/W): Height of the BitBLT area
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bit 0-9 Number of lines in Blit area.
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10-11 (AVGA) Bit 8-9 of the Scanline Width. Bit 0-15 are in
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12-13 (AVGA) Bit 16-17 of the distance. Bit 0-15 are in 23CCh.
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14-15 (AVGA) Bit 16-17 of Source address. Bit 0-15 are in 23C0h.
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23C6h (R/W):
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23C7h (R/W):
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bit 2 Set to enable Linear Frame Buffer.
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4 Set to use 16K banks, clear to use original 4K banks
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23CAh W(R/W): Scanline width. (IVGS, AVGA only)
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bit 0-15 Width of destination in DWORDs (256color) or bytes (16color).
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Negative if moving backwards.
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23CCh W(R/W): Destination Address (IVGS, AVGA only)
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bit 0-15 Distance between the Destination and the Source Address in DWORDs
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(256colors) or bytes (16colors).
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(AVGA) Bit 16-17 are in 23C4h bit 12-13.
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23CCh W(R/W): Scanline Width (QVision)
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bit 0- Bytes per scanline in the destination in units of 4 (DWORDs).
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23CEh W(R/W): Scanline width. (IVGS, AVGA only)
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bit 0-15 Width of destination in DWORDs. Negative if moving backwards.
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Note: one must be source and the other destination width
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33C0h (R/W): (IVGS, AVGA only)
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bit 0-7 Start pixel of BitBLT source
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33C1h (R/W): (IVGS, AVGA only)
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bit 0-7 Ending pixel of BitBLT destination
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33C7h (R/W): (IVGS, AVGA only)
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33C8h (R/W): (IVGS, AVGA only)
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bit 0-1
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Note: this is the same register as 3CEh index 3 ??
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33C9h (R/W): (IVGS, AVGA only)
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33CAh W(R/W): Fore/Back ground color ?
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33CCh W(R/W): Fore/Background color
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Note: Apparently the Fore/Background color registers must be written twice to
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work properly.
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33CEh (R/W): COP Status/Command
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bit 0 (R) If set the CoProcessor is busy.
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0-5 (W) 11h = Copy. 9 = Fill.
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6 (W) Copy/Fill backwards if set
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33CFh (R/W):
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63C0h W(R/W): Source Bitmap X-address (QVision only)
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bit 0-9 The X co-ordinate of the start of the Source Data.
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63C2h W(R/W): Source Bitmap Y-address (QVision only)
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bit 0-9 The Y co-ordinate of the start of the Source Data.
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63C4h (R/W):
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63C5h (R/W):
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63CAh (R/W):
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bit 0-2 1=4bit packed, 3=8bit packed, 5= 15bit, 7=24 bit (packed as RGBa)
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6 After loading the BitMap Address and Size registers, wait for this
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bit to be 0 before setting final registers and starting the
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command.
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7 Wait for this bit to be 0, before loading the Source/Destination
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address and BitMap size registers.
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63CBh (R/W):
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bit 0 Set for 2Mb?
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2-3 Scanline Width. 0: 512 pixels/line, 1: 1024 pixels/line, 2: 2048
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pixels/line
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4-6 Set to 7 ?
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63CCh W(R/W): Destination Bitmap X-address (QVision only)
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bit 0-9 The X co-ordinate of the start of the Destination Data
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63CEh W(R/W): Destination Bitmap Y-address (QVision only)
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bit 0-9 The Y co-ordinate of the start of the Destination Data
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83C4h (): Virtual Controller Select (QVision only)
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83C6h-83C9h Extra DAC registers (RS2 = 1) on the AVGA and QVision boards
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93C6h-93C9h Extra DAC registers (RS2 = 1, RS3 = 1) on QVision boards
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93C6h W(R/W): Hardware Cursor Y-position
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bit 0-9 The X-position of the right pixel of the hardware cursor.
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93C8h W(R/W): Hardware Cursor X-position
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bit 0-9 The Y-position of the lower scanline of the hardware cursor.
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Note: Registers 3C6h-3C9h, 13C6h-13C9h, 83C6h-83C9h and 93C6h-93C9h are
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physically in the Brooktree DAC.
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The AVGA connects A15 to RS2 on the DAC so 4 extra DAC registers are
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accessible at 83C6h-83C9h (if supported by the DAC), and the QVision
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connects A15 to RS2 and A12 to RS3 so 12 extra DAC registers are available
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at 83C6h-83C9h, 13C6h-13C9h and 93C6h-93C9h (if supported by the DAC).
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ID Compaq super VGA:
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old:=rdinx($3CE,$F);
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wrinx($3CE,$F,0);
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if not testinx($3CE,$45) then
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begin
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wrinx($3CE,$F,5);
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if testinx($3CE,$45) then
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begin
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SubVers:=rdinx($3CE,$C) shr 3;
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case SubVers of
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3:name:='Compaq IVGS';
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5:name:='Compaq AVGA';
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6:name:='Compaq QVision 1024';
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$E:if (rdinx(GRC,$56) and 4)>0 then name:='Compaq QVision 1280'
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else name:='Compaq QVision 1024';
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$10:name:='Compaq AVPort';
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else UNK(Compaq)
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end;
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end;
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end;
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wrinx($3CE,$F,old);
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Video Modes:
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18h T 132 43 (AVGA) Mono
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19h T 132 25 (AVGA) Mono
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1Ah T 132 28 (AVGA) Mono
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1Bh T 132 50 (AVGA) Mono
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1Ch T 132 60 (AVGA) Mono
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22h T 132 43
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23h T 132 25
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24h T 132 28
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27h T 132 50
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28h T 132 60
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29h G 800 600 16c PL4
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2Eh G 640 480 256c P8. Each scan line is 1024 bytes wide.
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Remaining modes only supported by QVision boards:
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32h G 640 480 256c P8 Each scan line is 1024 bytes wide
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33h G 640 400 256c P8 Each scan line is 1024 bytes wide
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34h G 800 600 256c P8 Each scan line is 1024 bytes wide
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37h G 1024 768 16c PK4
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38h G 1024 768 256c P8
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39h G 1280 1024 16c PK4
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3Ah G 1280 1024 256c P8 Each scan line is 2048 bytes wide
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3Eh G 640 480 32k P15
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40h G 640 400 2 Compaq Portable only
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4Dh G 512 480 16m P32 Four bytes per pixel
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4Eh G 640 400 16m P32 Four bytes per pixel
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BitBLTs:
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There appear to be two different systems: mode 2Eh uses a system based on the
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memory address of the bitmaps involved, and with some fields packed.
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Is this to keep compatibility with something ??
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Mode 32h, 37h and 38h use a system based on the pixel addresses of the bitmaps
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Also some of the registers appear to be mapped to more than one address ??
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I.e.. drivers some times adds a value to the register address.
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Compaq BIOS extensions:
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----------10BF00-----------------------------
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INT 10 - VIDEO - Compaq Portable Extensions - SELECT EXTERNAL MONITOR
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AX = BF00h
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Note: all registers preserved and the internal monitor is blanked
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the external monitor becomes the active monitor
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----------10BF01-----------------------------
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INT 10 - VIDEO - Compaq Portable Extensions - SELECT INTERNAL MONITOR
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AX = BF01h
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Note: all registers preserved and the external monitor is blanked
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the internal monitor becomes the active monitor
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----------10BF02-----------------------------
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INT 10 - VIDEO - Compaq Portable Extensions - SET MASTER MODE OF CURRENT CTRLR
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AX = BF02h
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BH = master mode
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04h CGA
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05h EGA
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07h MDA
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----------10BF03BX0000-----------------------
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INT 10 - VIDEO - Compaq Extensions - Get Environment
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AX = BF03h
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BX = 0000h
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Return: BH = active monitor
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00h = external
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01h = internal
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03h = both
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04h = neither
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BL = master mode
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00h = switchable VDU not present
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04h = CGA
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05h = EGA
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07h = MDA
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08h = switchable LCD controller present
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09h = plasma VGA
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0Ah = TFT (active matrix) VGA
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CH = 00h (reserved)
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(QVision) Bits 3-7: Chip ID (from 3CEh index 0Ch):
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06h QVision 1024
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0Eh QVision 1024 or 1280
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CL = switchable VDU mode supported
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bit 0 = CGA supported
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bits 1,2 = reserved (1)
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bit 3 = MDA supported
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bits 4-7 = reserved (1)
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(QVision)
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Bit 0 Set if extended modes are enabled
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4 BitBLT engine available if set
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5 132-coloumn support available if set
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6 640x480x256 mode available if set
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7 8-bit DAC mode (256c of 16m) available if set
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DH = internal monitor type (see below)
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DL = external monitor type
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00h = none
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01h = dual-mode monitor
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02h = 5153 RGB monitor (RGBI 16-color)
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03h = Compaq Color monitor
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04h = 640x400 flat panel (Plasma CGA)
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05h = VGC monochrome
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06h = VGC color
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07h = 8-level mono LCD VGA (internal)
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1024x768 mono VGA (external)
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08h = 16-level mono plasma VGA (internal)
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1024x768 color VGA (external)
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09h = 4-level mono LCD CGA
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0Ah = 16-level mono LCD VGA
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0Bh = active-matrix color VGA
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0Ch = active-matrix mono VGA
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0Dh = STN color VGA
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----------10BF04-----------------------------
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INT 10 - VIDEO - Compaq Portable Extensions - Set Mode Switch Delay
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AX = BF04h
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BH = new state of delay
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00h enabled
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01h disabled
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----------10BF05-----------------------------
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INT 10 - VIDEO - Compaq Systempro Extensions - Enable/Disable Display
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AX = BF05h
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BH = new state of video
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00h off
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01h on
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----------10BF06-----------------------------
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INT 10 - VIDEO - Compaq SLT/286 - Read Gray Scale Table
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AX = BF06h
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CL = address to be read from grey scale table
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Return: AL = bit 3-0 - Value read from grey scale table
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CL = address to be read from grey scale table
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----------10BF07-----------------------------
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INT 10 - VIDEO - Compaq SLT/286 - Write Gray Scale Table
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AX = BF07h
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CH = value to write to grey scale table
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CL = address to be written to grey scale table
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----------10BF08-----------------------------
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INT 10 - VIDEO - Compaq SLT/286 - Write Color Mix Registers
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AX = BF08h
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CH = bits 7-4 - Green weight
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bits 3-0 - Blue weight
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CL = bits 7-4 - unused
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bits 3-0 - Red weight
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----------10BF09-----------------------------
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INT 10 - VIDEO - Compaq Extensions - Turn On Reverse Video
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AX = BF09h
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Return: CF clear
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Note: sets bit 6 of port 03CEh index 81h; in some cases also sets index 84h
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to 6Fh and index 83h to 04h
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Note: supported by at least the QVision board and the LTE Lite ROM BIOS
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----------10BF0A-----------------------------
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INT 10 - VIDEO - Compaq Extensions - Turn Off Reverse Video
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AX = BF0Ah
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Return: CF clear
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Note: clears bit 6 of port 03CEh index 81h; in some cases also sets index 84h
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to 80h and index 83h to FBh
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Note: supported by at least the QVision board and the LTE Lite ROM BIOS
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--------b-10BF0B-----------------------------
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INT 10 - VIDEO - Compaq Extensions - Check Whether Video Reversed
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AX = BF0Bh
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Return: CF clear
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AX = state (0000h normal video, 0001h reversed video)
|
|
Note: supported by at least the QVision board and the LTE Lite ROM BIOS
|
|
----------10BF0C------------------------------------
|
|
INT 10 - VIDEO - Compaq Extensions - Set 6bit DAC Mode
|
|
AX = BF0Ch
|
|
Return: CF clear
|
|
Desc: specify that video DAC registers use only six bits of color info
|
|
Note: supported by AVGA, QVision boards and the SystemPro XL ROM BIOS
|
|
----------10BF0D------------------------------------
|
|
INT 10 - VIDEO - Compaq Extensions - Set 8bit DAC Mode
|
|
AX = BF0Dh
|
|
Return: CF clear
|
|
Desc: specify that video DAC registers use all eight bits of color info
|
|
Note: supported by AVGA, QVision boards and the SystemPro XL ROM BIOS
|
|
----------10BF0E------------------------------------
|
|
INT 10 - VIDEO - Compaq Extensions - Get DAC Resolution
|
|
AX = BF0Eh
|
|
Return: AL = 00h if DAC in 6bit mode
|
|
01h if DAC in 8bit mode
|
|
CF clear
|
|
Note: supported by AVGA, QVision boards and the SystemPro XL ROM BIOS
|
|
----------10BF0F------------------------------------
|
|
INT 10 - VIDEO - Compaq Extensions - Set Linear Video Buffer Address
|
|
AX = BF0Fh
|
|
BX = Linear Video Buffer Address in megabytes, or
|
|
0FFFFh to let ROM configure Linear Video Buffer Address
|
|
Return: AX = previous Linear Video Buffer Address
|
|
CF clear
|
|
Note: supported by AVGA, QVisions board and the SystemPro XL & LTE Lite ROM
|
|
BIOSes
|
|
----------10BF10------------------------------------
|
|
INT 10 - VIDEO - Compaq QVision - Get Linear Video Buffer Address
|
|
AX = BF10h
|
|
Return: AX = Linear Video Buffer Address in megabytes
|
|
CF clear
|
|
Note: supported by AVGA, QVision boards and the SystemPro XL & LTE Lite ROM
|
|
BIOSes
|
|
----------10BF11------------------------------------
|
|
INT 10 - VIDEO - Compaq Extensions - Get Extended Environment
|
|
AX = BF11h
|
|
Return: AL = BFh
|
|
CF clear
|
|
ES:SI -> Advanced Functionality Table (4 bytes):
|
|
Bit 1 132-column modes supported if set
|
|
2 Set for QVision 1280's
|
|
4 Standard VGA modes supported if set
|
|
5 Accelerated VGA modes supported if set
|
|
6 Advanced VGA modes supported if set
|
|
7 QVision modes supported if set
|
|
8 Set for QVision 1280 and 1024's, clear for original
|
|
QVision
|
|
12-15 Video memory in 256K units, 0=256K, 1=512K...
|
|
Typical values are:
|
|
000030F2h Original QVision w/1MB??
|
|
000010F2h Original QVision w/512K??
|
|
000031F2h QVision 1024 w/1MB
|
|
000031F6h QVision 1280 w/1MB
|
|
000071F2h QVision 1024 w/2MB
|
|
000071F6h QVision 1280 w/2MB
|
|
ES:DI -> COMPAQ text and date
|
|
Note: supported by at least the QVision board and the LTE Lite and ProSignia
|
|
ROM BIOSes
|
|
Note: Some sources have the table at ES:DI and the text&date at ES:BX
|
|
----------10BF12------------------------------------
|
|
INT 10 - VIDEO - Compaq Extensions - New Active Monitor
|
|
AX = BF12h
|
|
BH reserved
|
|
BL = function mask
|
|
bit 0 External monitor
|
|
1 Internal monitor
|
|
7 If set bits 0 and 1 activate the monitor when set,
|
|
if clear they toggle the state when set
|
|
Return: CF clear
|
|
Note: this function is a NOP if the VGA subsystem is inactive or the current
|
|
Display Combination Code is 10h or higher
|
|
Supported by at least the QVision board and the LTE Lite and ProSignia
|
|
ROM BIOSes
|
|
----------10BF13------------------------------------
|
|
INT 10 - VIDEO - Compaq QVision - Gamma Correction
|
|
AX = BF13h
|
|
BH = 00h
|
|
BL = 00h Loads Gamma Correction table for true color mode
|
|
DS = BIOS data segment
|
|
01h Select Palette RAM bypass (direct DAC Mode)
|
|
Note: Only effective for Hi/TrueColor modes. Must be called after the mode has
|
|
been set and only have effect until the next mode switch
|
|
----------10BFE0------------------------------------
|
|
INT 10 - VIDEO - Compaq QVision (later models ??)
|
|
AX = BFE0h
|