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- OAK Technologies. OTI.
-
- OTI-O37C 100pin. has 256K or 512K.
- OTI-O67 144pin has 256K or 512K.
- OTI-O77 144pin allows 1MB and up to 1024x768 in 256 colors.
- OTI-O87 160pin allows 2MB and has BitBlt functions
- OTI-O107 Also known as the "Spitfire" OTI 64107 or OTI 64105 (diff?)
-
- OAK-037, 067 and 077:
-
- 3DEh (R/W): Index register (37-77)
- bit 0-4 Index to the OAK extended registers at 3DF.
- 5-7 (R) Chip version. 0=OAK-037C, 2=OAK-067, 5=OAK-077, 7=OAK-057
- Note: Has anyone seen an 057 ????
-
- 3DEh (R/W): Index register (83/87)
- bit 0-7 Index to the OAK extended registers at 3DF.
-
- 3DEh index 00h (R): Product Number (83/87)
- bit 1 Set for OTI-083, Clear for OTI-087
-
- 3DEh index 02h (R/W): Status Register (83/87)
- bit 0 (R) Status. 0: 286, 1: 386/486
- 1-2 Memory Size. 0: 256K, 1: 512K, 2: 1MB, 3: 2MB
-
- 3DEh index 03h (R/W): Oak Test Register (83/87)
- bit 5 ?? (Causes vertical stripes)
- 7 ??
-
- 3DEh index 04h (R/W): Local Bus Control (83/87)
- bit 2 Set if using Zero Wait States for the VESA Local BUS interface.
- 4
-
- 3DEh index 05h (R/W): Video Memory Mapping (83/87)
- bit 0 Enable Oak Address Mapping. 0: A000/B800, 1: Linear Aperture
- 1 DMA Address Disable. 0: Normal, 1: Disable DMA to video memory
- 2-3 Memory Address Aperture Select. Selects the size of the aperture
- 0: 256K aperture, 1: 512K, 2: 1MB, 3: 2MB
- 4-7 Starting Address. If bit 0 is set select the location of the linear
- aperture. 0: at 0MB, 1: at 1MB ... Fh: at 15 MB.
-
- 3DEh index 06h (R/W): Clock Select (83/87)
- bit 0-3 Clock select bits 0-3. Bits 0-1 are the same as 3C2h bits 2-3 and
- bit 2 is the same 3DEh index 0Dh bit 5.
- 4 ?? (Display reset ??)
-
- 3DEh index 07h (R): Configuration Register 1 (83/87)
- bit 1-2 Bus type. 0: VLB motherboard, 1: VESA VLB slot, 2: ISA motherboard
- 3: ISA 16bit slot
-
- 3DEh index 08h (R): Configuration Register 2 (83/87)
- bit 2-3 DAC type. 0: Bt476, SC11487, IMSG174 or similar, 1: MU9c1715
- 2: Bt484 or similar (32bit pixelport)
-
- 3DEh index 09h (R/W): Scratch Register 1
- bit 0 Set if 24bit DAC available ?
-
- 3DEh index 0Ah (R/W): Scratch Register 2
-
- 3DEh index 0Bh (R/W): Scratch Register 3
- bit 6 Clear if VESA monitor timings (Jumper )
- 7 Clear if non-interlaced monitor timings
-
- 3DEh index 0Ch (R/W): CRT Control
- bit 0-2 (37-77) If set locks some registers ?
- 3 I/O write test ?
- 6 ?
-
- 3DEh index 0Dh (R/W): Oak Miscellaneous
- bit 2-3 (37-77) Should be set to enable access to memory above 256k
- Hm, bits 0-3 may indicate the Display FIFO depth ??
- 4 For 16 color modes should be set to enable access for memory above
- 256K, should be clear in all other modes !!!
- 5 Clock Select bit 2. Bits 0-1 are in 3C2h/3CCh
- 6-7 (77) Video memory. 0: 256K, 1,3: 1MB, 2: 512K
- 7 (37-67) 512K if set, 256 if clear
-
- 3DEh index 0Eh (R/W): Backwards Compatibility
- bit 2 Force interlaced mode if set ???
- 6 If set repeats scanline 2 ad infinitum ??
- 7 VGA mode if set
-
- 3DEh index 0Fh (R): NMI Data Cache
-
- 3DEh index 10h (R): Dip Switch Read
-
- 3DEh index 11h (R/W): Segment
- bit 0-3 Read segment
- 4-7 Write segment
-
- 3DEh index 12h (R): Configuration
-
- 3DEh index 13h (R/W): Bus Control
-
- 3DEh index 14h (R/W): Oak Overflow
- bit 0 Bit 10 of the VTotal Register (3d4h index 6)
- 1 Bit 10 of the Vertical Display End Register (3d4h index 12h)
- 2 Bit 10 of the Vertical Retrace Start Register (3d4h index 10h).
- 3 Display Start Address bit 16. Bits 0-15 are in 3d4h index Ch,Dh
- 4 Cursor Location Address bit 16. Bits 0-15 are in 3d4h index Eh,Fh.
- 7 Set to enable Interlace display.
-
- 3DEh index 15h (R/W): HSYNC/2 Start
- bit 0-7 How far into the scanline the odd frame should start in interlaced
- modes. Usually half the VTotal value.
-
- 3DEh index 16h (R/W): OTI Overflow Register 2 (77 +)
- bit 3 Display Start Address bit 17. Bits 0-15 are in 3d4h index Ch,Dh
- and bit 16 in 3DEh index 14h bit 3.
- 4 Cursor Location Address bit 17. Bits 0-15 are in 3d4h index Eh,Fh.
-
- 3DEh index 17h (R/W): Extended CRTC Register (83/87)
- bit 0-2 Display Start Address bit 16-18. Bits 0-15 are in 3d4h index Ch,Dh
- Note that bit 0 of this register is also at 3DEh index 3 and bit 1 at
- 3DEh index 16h bit 3.
-
- 3DEh index 18h (R/W): EEPROM Control
- bit 2 Clock Select??
-
- 3DEh index 19h (R/W): Extended Color Palette Address
-
- 3DEh index 20h (R/W): FIFO Depth (83/87)
- bit 0-3 FIFO depth. If the number of entries in the Display FIFO reaches this
- level (or less) a screen data fetch will start. Low values gives
- better performance, but might disturb the display.
-
- 3DEh index 21h (R/W): Mode Select (83/87)
- bit 0-1 Divides the video clock by. 0: 1, 1: 2, 2: 3, 3: 3
- 2 Clear in mode 13h, set in all other 256color modes
-
- 3DEh index 22h (R/W): Feature Select (83/87)
- bit 0 Enable contents addressable latch ?
- 2-3 Both set to enable bitblt ??
- 4 Enable 64bit CPU Latch if set
- 5 CPU Latch Swap. If set swaps the high and low Latch.
-
- 3DEh index 23h (R/W): Extended Read Segment (83/87)
- bit 0-4 Read segment in units of 64K
-
- 3DEh index 24h (R/W): Extended Write Segment (83/87)
- bit 0-4 Write segment in units of 64K
-
- 3DEh index 25h (W): Extended Common Read/Write (83/87)
- bit 0-4 Combined read/write segment. Writing to this register will set both
- the Read (index 23h) and Write Segment (index 24h) registers
-
- 3DEh index 30h (R/W): Color Expansion Control Register (83/87)
- bit 0 Enable Color Expansion if set
- 1 Color Expansion Mode Select. 0: Packed pixel, 1: Planar.
- 2 Select Pattern Register. If set the Color Pattern Register (3DEh
- index 33h) is used to select foreground and background, if clear the
- CPU data select foreground and background.
- 3 Pixel Mask Enable. If set
- 4 Pixel Mask Ordering. If set bit 7 corresponds to pixel 0, if clear
- bit 7 corresponds to pixel 0.
-
- 3DEh index 31h (R/W): Foreground Color (83/87)
- bit 0-7 Foreground color for Color Expansion.
-
- 3DEh index 32h (R/W): Background Color (83/87)
- bit 0-7 Background color for Color Expansion.
-
- 3DEh index 33h (R/W): Color Pattern Register (83/87)
- bit 0-7 If Color Expansion is enabled (3DEh index 30h bit 0 is set) and 3DEh
- index 30h bit 2 is set this register is used to select foreground and
- background during writes.
-
- 3DEh index 34h (R/W): Word Mode Pixel Mask (83/87)
- bit 0-7 Pixel Mask. If Color Expansion is enabled (3DEh index 30h bit 0 is
- set) and Pixel Mask is enabled (3DEh index 30h bit 3 is set) each bit
- controls writing to a plane (in planar mode) or a pixel (in packed
- mode).
-
- 3DEh index 35h (R/W): CPU Latch Index (83/87)
- bit 0-2 Selects which of the 8 bytes in the 64bit CPU Latch can be read or
- written at index 36h
-
- 3DEh index 36h (R/W): CPU Latch Data (83/87)
- bit 0-7 The 64bit CPU Latch can be read or written through this register.
- The CPU Latch Index Register (3DEh index 35h) selects the byte that
- is accessed.
-
- 3DEh index 40h (R/W): HC Horizontal Start High (83/87)
-
- 3DEh index 41h (R/W): HC Horizontal Start Low (83/87)
-
- 3DEh index 42h (R/W): HC Vertical Start High (83/87)
-
- 3DEh index 43h (R/W): HC Vertical Start Low (83/87)
- The cursor is stored as a 64x64 2bits/pixel bitmap. Each line is 16 bytes,
- first 8 bytes (64bits) of 'A' data, then 8 bytes of 'B' data.
- 'A' 'B'
- 0 0 Transparent (screen data)
- 0 1 Foreground color
- 1 0 Inverted screen data (Pixel is inverted)
- 1 1 Background color
-
- 3DEh index 44h (R/W): HC Horizontal Preset (83/87)
- bit 0-5 Number of pixels to skip on the right side of the cursor.
-
- 3DEh index 45h (R/W): HC Vertical Preset (83/87)
- bit 0-5 Number of lines to skip at the bottom of the cursor.
-
- 3DEh index 47h 3(R/W): HC Start Address (83/87)
- bit 0-16 Address of the Hardware Cursor Map in units of 8 bytes.
-
- 3DEh index 4Ah (R/W): HC Foreground Color (83/87)
-
- 3DEh index 4Bh (R/W): HC Background Color (83/87)
-
- 3DEh index 4Ch (R/W): HC Control Register (83/87)
- bit 0 Enable Hardware Cursor if set
- 1 Display Selection. 0: Overscan, 1: Show over Overscan
- 2 Data Format of Cursor. 0: bit 0 first, 1: bit 7 first
- 3 Blink Rate Enabled if set
- 4-5 Blink Rate. 0: 4 frames/sec, 1: 8 f/s, 2: 16 f/s, 3: 32 f/s
-
-
-
- Oak OTI 64105/7:
-
- 3DEh index 2 (R/W): Status
- 3DEh index 3 (R/W): OTI Test Register 1
- 3DEh index 4 (R/W): OTI Test Register 2
- 3DEh index 6 (R/W): Clock Select/Scratch
- 3DEh index 7 (R): Configuration Register 1
- 3DEh index 8 (R): Configuration Register 2
- bit 3-4 ROM Size. 0: 32K, 1: 64K, 2: 128K, 3: 256K
-
- 3DEh index 9 (R): Configuration Register 3
- 3DEh index 0Ch (R/W): I2C Control
- 3DEh index 0Dh (R): Dip Switch Read
- 3DEh index 0Eh (R/W): EPROM Control
- 3DEh index 0Fh (R/W): Power Saving
- 3DEh index 10h (R/W): Local Bus Control
- 3DEh index 11h (R/W): Compatible Segment
- 3DEh index 13h (R/W): ISA Bus Control
- 3DEh index 14h (R/W): Memory Mapping
- 3DEh index 15h (R/W): Memory & I/O Map Enable
- bit 6 Enable Graphic Memory Response if set
- 7 Enable Memory Mapped I/O if set
-
- 3DEh index 19h (R/W): Configuration/Aux/DAC Address
- bit 0-3 Selects the address of the Configuration/DAC/Auxiliary registers at
- 2x00h-2xFFh where x is the value in this field. 2x00h-2x3Fh for (PCI)
- Configuration registers, 2x80h-2x9Fh for DAC registers and 2xA0h-
- 2xBFh for auxiliary registers
- 4 Enables decoding of the DAC registers at 2x80h-2x9Fh if set
- 5 Enables decoding of the auxiliary registers at 2xA0h-2xBFh if set.
-
- 3DEh index 20h (R/W): FIFO Depth
- 3DEh index 21h (R/W): Mode Select
- 3DEh index 22h (R/W): Feature Select
- bit 5 Enable write mode 4 which bypasses the ALU and barrel shifter. Only
- used for planar modes.
-
- 3DEh index 23h (R/W): Extended Read Segment
- 3DEh index 24h (R/W): Extended Write Segment
- 3DEh index 25h (R/W): Extended Common Read/Write Segment
- 3DEh index 26h (R/W): RASn Control
- 3DEh index 27h (R/W): CASn Control
- 3DEh index 28h (R/W): Refresh Control
- 3DEh index 29h (R/W): Hardware Window Arbitration
- 3DEh index 30h (R/W): OTI CRT Overflow
- bit 3 CRT Offset bit 9. Bits 0-7 are in 3d4h index
-
- 3DEh index 31h (R/W): CRT Start Address High
- bit 0-6 Display Start Address bit 16-22. Bits 0-15 are in 3d4h index Ch,Dh
-
- 3DEh index 32h (R/W): HSYNC/2 Start
- 3DEh index 33h (R/W): CRT Address Compatibility
- 3DEh index 38h (R/W): Pixel Interface
- bit 0-3 Pixel Mode. Controls the routing of display data.
- 0: VGA, 8bit DAC path. Routed through the attribute controller
- 1: 4bpp, 8bit DAC path (2 pixels per DAC operation?).
- 2: 8/16/24bpp, 8bit DAC path
- 3: 16bpp, 16bit DAC path
- 4: 8bpp, 16bit DAC path (2 pixels per DAC operation?).
- 5: 16bpp, 16bit DAC path
- 6: 32bpp, 16bit DAC path
- 7: 24bpp, 24bit DAC path
- 8: 32bpp, 24bit DAC path
- 4 Color Ordering. In 16bpp and 24bpp (also 32bpp?) modes controls the
- order of the red and blue components. If set the blue part comes
- first (low bits) and the red last, if clear red comes first.
- 5-6 Bits/pixel. 0: 8bpp, 1: 16bpp, 2: 24bpp, 3: 32bpp
-
- 3DEh index 80h W(R/W): HC/HW Horizontal Position Start
- 3DEh index 82h W(R/W): HC/HW Vertical Position Start
- 3DEh index 84h (R/W): HC Horizontal Preset/HW Width Low
- bit 0-5 (HC)
- 0-7 (HW) Low 8bits of the HW width. Upper bits are in index 85h
-
- 3DEh index 85h (R/W): HW Width High
- bit 0-? High bits of the HW width. Low bits are in index 84h. This value is
- the number of doublewords (4bytes) in each line.
-
- 3DEh index 86h (R/W): HC Vertical Preset Low/HW Height Low
- 3DEh index 87h (R/W): HW Height High
- 3DEh index 88h 3(R/W): HC Start Address
- 3DEh index 8Ch 4(R/W): HC Color 0
- bit 0-31 Cursor color 0. Same format as the current display
-
- 3DEh index 90h 4(R/W): HC Color 1
- bit 0-31 Cursor color 1. Same format as the current display
-
- 3DEh index 94h (R/W): HC Control Register
- bit 0 Enable Hardware Cursor (HC) if set
- 1 HC display is over overscan if set, under if clear
- 2 HC Data format. Motorola if set, Intel if clear
- 3 HC Blink enabled if set
- 4-5 Blink Rate. 0: 4frames on+off, 1: 8f, 2: 16f, 3: 32f
-
- 3DEh index 96h (R/W): HW Control
- bit 0 Select Hardware Window (HW) or Hardware Cursor (HC). 0: HC, 1: HW
- 1-2 Horizontal Scaling Factor. 0: None, 1: /2, 2: /4, 3: /8
- 3-4 Vertical Scaling Factor. 0: None, 1: /2, 2: /4, 3: /8
- 5 Select odd/even lines for scaling. 0: even, 1: odd
- 6 YUV or RGB for scaling. 0: data from Multimediaport is YUV, 1: RGB
- 7 Enable Mask Map for Multimedia Port
-
- 3DEh index 98h 3(R/W): HW Mask Map Start
- 3DEh index 9Ch 3(R/W): HW Start Address
- 3DEh index 9Fh (R/W): HW Address Offset
-
- 3DEh index F0h (R/W): Scratch Register 0
- 3DEh index F1h (R/W): Scratch Register 1
- 3DEh index F2h (R/W): Scratch Register 2
- 3DEh index F3h (R/W): Scratch Register 3
- 3DEh index F4h (R/W): Scratch Register 4
- 3DEh index F5h (R/W): Scratch Register 5
- 3DEh index F6h (R/W): Scratch Register 6
- 3DEh index F7h (R/W): Scratch Register 7
-
- 2x00h W(R): Vendor ID
- bit 0-15 104Eh for Oak
-
- 2x02h W(R): Device ID
- bit 0-15 0107h for the Oak-107
-
- 2x04h W(R/W): System Bus Command Register
- bit 0 I/O Space. If set the device is allowed to respond to I/O accesses.
- 1 Memory Space. If set the device is allowed to respond to memory
- accesses.
- 3 Special Cycle. If set the device is allowed to monitor special
- cycles.
- 5 VGA Palette Snoop. Clear for normal DAC operation, set to enable
- special DAC snoop mode where the DAC does not respond to writes.
- 6 Parity Error. If set the device responds to parity errors, if clear
- ignores them.
- 7 Wait Cycle Control. If set enables address/data stepping.
- 8 System Error Driver. If set the Error driver reports address parity
- errors, if clear it is disconnected.
- 9 Back to Back Cycle. If set there is no delay between bus cycles.
-
- 2x??h W(R): System Bus State
- bit 7 (R) Fast back-to-back. Fast back-to-back supported if set
- 8 Bus Master
- 9-10 (R) Device Select Timing. Timing of DEVSEL#. 0: fast, 1: medium,
- 2: slow
- 11 Device Target-abort. Set if the VGA issues a target abort
- 12 Received Target-abort. Set if the VGA as master receives a target
- abort.
- 13 Master Abort Status. Set if the VGA as master issues a master abort.
-
- 2x08h (R): Revision ID
- 2x??h D(): Class Code Register
- bit 0-23 0 for non-VGA devices, 30000h for VGA compatible devices ??
-
- 2x??h (R): Programming Interface
- 2x??h (R/W): Cache Line Size
- 2x??h (R): Header Type
- 2x??h (R/W): Built-In Self Test
- 2x10h D(R/W): Memory Mapped I/O Base Address
- bit 0 (R) Memory or I/O. 0: Memory mapped, 1: I/O mapped
- 1-2 (R) Locatable area. 0: Anywhere in 32bit address space, 1: Below
- 1MB, 2: anywhere in 64bit address space.
- 3 (R) Pre-fetchable. Set if memory is cacheable, clear if not.
- 4-7 (R) Address space size. 0: 256 bytes
- 8-31 Memory-Mapped I/O Base. Upper 24bits of the base address
-
- 2x14h D(R/W): Graphics Memory Base Address
- bit 0 (R) Memory or I/O. 0: Memory mapped, 1: I/O mapped
- 1-2 (R) Locatable area. 0: Anywhere in 32bit address space, 1: Below
- 1MB, 2: anywhere in 64bit address space.
- 3 (R) Pre-fetchable. Set if memory is cacheable, clear if not.
- 4-19 (R) Address space size. 0: >= 1MB
- 20-22 (PCI) (R) Address block size. Always 0
- 20-22 (VL,ISA) Address block size. Bits 20-22 of the Base address
- 23-31 Base Address. Upper 9 bits of the base address.
-
- 2x??h D(R/W): Extended I/O Base Address
- bit 0 (R) Memory or I/O. 0: Memory mapped, 1: I/O mapped
- 3 (R) Pre-fetchable. Set if memory is cacheable, clear if not.
- 4-7 (R) Address space size. 0: 256bytes
- 8-31 Base Address. Upper 24 bits of the base address.
-
- 2x30h (R/W): BIOS ROM Base Address
- bit 0 (R/W) BIOS ROM Decode enabled if set
- 11-14 (R) ROM BIOS Min Size. If clear ROM BIOS is min. 32K
- 15-17 ROM BIOS size. Bits 15-17 of the base address. Depending on the size
- of the ROM (see Configuration Register 2 - 3DEh index 8 bits 3-4)
- some of these bits may be Read only and 0.
- 3DEh index 8 bits 3-4: Bit15 Bit16 Bit17 ROM Size:
- 0 R/W R/W R/W 32K
- 1 R/W R/W R(0) 64K
- 2 R/W R(0) R(0) 128K
- 3 R(0) R(0) R(0) 256K
- 18-31 ROM BIOS Address. Upper 14 bits of the base address.
-
- 2x3Ch (R/W): Interrupt Line
- 2x??h (R): Interrupt Pin
- 2x??h (R): Minimum Grant
- 2x??h (R): Maximum Latency
-
-
-
- M+10h (R/W): Co-Processor Status
- bit 0-1 (R) Map that needs data next. 0: Pattern, 1: Mask, 2: Source, 3: Dest
- 2 If set the map writing, if clear reading
- 3 (R) Map Status Valid
- 4 If set increase address for next access, if clear reset to map start
- 5 If set advance to next line, if clear stay on current line
- 7 (R) Co-Processor busy if set
-
- M+11h (R/W): Co-Processor Control
- bit 0 Select CINT interrupt source. VGA interrupt or Co-Processor interrupt
- 1 Enable Master Mode. 0: CPU assisted, 1: Bus Master
- 4 Interrupt Status. Interrupt pending if set. Write 0 to clear
- 5 Terminate Co-Processor operation if set
- 6 Enable Turbo Co-Processor data path. If set removes extra datapath
- delay (1 clock).
-
- M+12h (R/W): Pixel Map Select
- M+14h D(R/W): Pixel Map n Base
- M+18h W(R/W): Pixel Map n Width
- M+1Ah W(R/W): Pixel Map n Height
- M+1Ch (R/W): Pixel Map n Format
- bit 0-2 Bits per pixel. 0: 1bpp, 3: 8bpp, 4: 16bpp, 5: 32bpp
- 3 Set for Motorola format, clear for Intel format
- 7 Set if the map is in system memory, clear if in video memory
-
- M+20h W(R/W): Bresenham Error Term
- M+24h W(R/W): Bresenham K1
- M+28h W(R/W): Bresenham K2
- M+2Ch D(R/W): Direction Steps
- M+48h (R/W): ROP
- M+4Ah (R/W): Destination Color Compare Condition
- bit 0-2 Condition.
- 0: Always true (disable update)
- 2: Dest == color
- 4: Dest != color
- 6: Always false (enable update)
-
- M+4Ch D(R/W): Destination Color Compare Value
- M+50h D(R/W): Pixel Bit Mask
- M+58h D(R/W): Foreground Color
- M+5Ch D(R/W): Background Color
- M+60h W(R/W): Operation Dimension 1
- M+62h W(R/W): Operation Dimension 2
- M+6Ch W(R/W): Mask Map Origin X Offset
- M+6Eh W(R/W): Mask Map Origin Y Offset
- M+70h W(R/W): Source X Pointer
- M+72h W(R/W): Source Y Pointer
- M+74h W(R/W): Pattern X Pointer
- M+76h W(R/W): Pattern Y Pointer
- M+78h W(R/W): Destination X Pointer
- M+7Ah W(R/W): Destination Y Pointer
- M+7Ch D(R/W): Pixel Operations Register
- bit 0-2 Direction
- 4-5 Drawing Mode
- 6-7 Mask Pixel Map
- 12-15 Pattern Pixel Map
- 16-19 Destination Pixel Map
- 20-23 Source Pixel Map
- 24-27 Co-Processor Function Control
- 28-29 Foreground Source
- 30-31 Background Source
-
-
- Note: the co-processor is clearly modeled on the IBM XGA.
-
- ID Oak VGA:
-
- if testinx2($3DE,$D,$38) then
- begin
- { We have an OAK }
- if testreg2($3DE,$23,$1F) then
- if (rdinx($3DE,0) and 2)=0 then _OAK_087
- else _OAK_083
- else
- case inp($3DE) div 32 of
- 0:_OAK_037C
- 2:_OAK_067
- 5:_OAK_077
- 7:_OAK_057
- end;
- end;
-
-
- Modes:
-
- (OTI 067/077/087)
-
- 4Eh T 80 60 16 (8x8) Not all 067's
- 4Fh T 132 60 16 (8x8)
- 50h T 132 25 16 (8x14)
- 51h T 132 43 16 (8x8)
- 52h G 800 600 16 PL4
- 53h G 640 480 256 P8
- 54h G 800 600 256 P8
- 55h G 1024 768 4 PL1/2?
- 56h G 1024 768 16 PL4
- 57h G 768 1024 4 ??
- 58h G 1280 1024 16 PL4
- 59h G 1024 768 256 P8 OTI-077/87 only
- 5Ah G 640 480 64k P16 OTI-077 w/Sierra
- 5Bh G 640 400 32k P15 OTI-077 w/Sierra
- 5Ch G 640 480 32k P15 OTI-077 w/Sierra
- 5Dh G 800 600 32k P15
- 5Eh G 1280 1024 256 P8
- 5Fh G 640 480 16m P24
- 60h G 800 600 64k P16
- 61h G 640 400 256 P8
-
- Note that the OAK-087 BIOS version 1.01B does not set the DAC mode of the
- HiColor modes correctly.
-
-
- (OTI037C "UNIQUE" VGA)
-
- 50h T 132 25 16 (8x14)
- 51h T 132 43 16 (8x8)
- 52h G 800 600 16 PL4
-
-
- (OTI037C with NEL Electronics BIOS)
-
- 50h G 640 480 16 PL4
- 51h T 80 30 (16x9)
- 52h G 1024 480 16 PL4
- 53h T 80 25 (16x8)
- 54h T 132 43 (8x8)
- 55h T 132 25 (14x8)
- 56h T 132 43 (8x9)
- 57h T 132 25 (14x9)
- 58h T 80 43 (8x8)
- 59h T 80 43 (8x9)
- 5Ah T 80 60 (8x8)
- 5Bh G 800 600 16 PL4
- 5Ch T 100 37 (16x8)
- 5Dh T 100 75 (8x8)
- 5Eh G 800 600 16 PL4
- 6Ah G 800 600 16 PL4
- 6Bh T 100 37 (16x8)
-
- ----------10FF-----------------------------------
- INT 10 - VIDEO - OAK VGA BIOS v1.02+ - SET EMULATION
- AH = FFh
- AL = Emulation
- 43h CGA emulation
- 45h EGA emulation
- 4Dh Hercules emulation
- 56h VGA emulation
- ES:DI -> signature string "Calamity"
- Switches to the desired emulation
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