PORTIBM PC Portable (uses same BIOS as XT) 03CE-03CF - EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors./VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers./MCGAMulti-Color Graphics Array(Multi-Color Graphics Array) The low-end color adapter offered in IBMInternational Busiuness Machines's early PS/2IBM PS/2, any model series machines. - GRAPHICS CONTROLLER REGISTERS
Range:	PORTIBM PC Portable (uses same BIOS as XT) 03CEh or PORTIBM PC Portable (uses same BIOS as XT) 02CEh (alternate EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors.)
SeeAlso: PORTIBM PC Portable (uses same BIOS as XT) 03C0h,PORTIBM PC Portable (uses same BIOS as XT) 03C2h,PORTIBM PC Portable (uses same BIOS as XT) 03C4h,PORTIBM PC Portable (uses same BIOS as XT) 03C6h,PORTIBM PC Portable (uses same BIOS as XT) 03D0h
SeeAlso: PORTIBM PC Portable (uses same BIOS as XT) 03CEh"Chips&Technologies"

03CE  -W  EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors.	GDC index register
03CE  RW  VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers.	graphics address register / GDC index
		      bit7-4: reserved
		      bit3-0: index
03CF  -W  EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors.	GDC data register (see #P0700)
03CF  RW  VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers.	other graphics register (see #P0700)


(Table P0700)
Values for EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors./VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers. indexed registers in GDC:
 00h	set/reset register (default 00h)
	functionality depending on write mode (register 05h) (see #P0704)
	bit7-4: reserved
	bit3  : 0=write 00h, 1=write FFh in plane 3
	bit2  : 0=write 00h, 1=write FFh in plane 2
	bit1  : 0=write 00h, 1=write FFh in plane 1
	bit0  : 0=write 00h, 1=write FFh in plane 0
 01h	enable set/reset register (default 00h) (see #P0701)
 02h	color compare register (default 00h) (see #P0702)
 03h	data rotate register (default 00h) (see #P0703)
 04h	read map select register (default 00h)
	bit7-3: reserved
	bit2  : EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors.?? & Genoa SuperEGA: map select bit2
	bit1-0: map select (0..3)
 05h	mode register (see #P0704)
 06h	miscellaneous register (see #P0705)
 07h	color don't care register
	bit7-4: reserved
	bit3=1: color plane 3 don't care (ignore bit3)
	bit2=1: color plane 2 don't care (ignore bit2)
	bit1=1: color plane 1 don't care (ignore bit1)
	bit0=1: color plane 0 don't care (ignore bit0)
 08h	bit mask register (default FFh)
	bit7-0: bitmask for latch/databyte
	      (bit set=change allowed)
---Paradise SuperVGA---
 0Fh	lock register
	The ability to write and reread 00h..07h to this register
	is often used as detection of Paradise chips.
	bit7-0 = 01h lock/hide Paradise specific registers
	       = 05h unlock Paradise specific registers
	bit7-3: reserved
	bit2-0: flipflops, reserved
SeeAlso: #P0706


Bitfields for EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors./VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers. GDC enable set/reset register:
Bit(s)	Description	(Table P0701)
 7-4	reserved (used on Genoa SuperEGA???)
 3	enable set/reset plane 3
 2	enable set/reset plane 2
 1	enable set/reset plane 1
 0	enable set/reset plane 0
 3-0	0=CPU(Central Processing Unit) The microprocessor which executes programs on your computer. access, 1=set/reset access to plane
SeeAlso: #P0700


Bitfields for EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors./VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers. GDC color compare register:
Bit(s)	Description	(Table P0702)
 7-4	reserved
 3	color compare 3
 2	color compare 2
 1	color compare 1
 0	color compare 0
 3-0	(color number)
SeeAlso: #P0700


Bitfields for EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors./VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers. data rotate register (GR3):
Bit(s)	Description	(Table P0703)
 7-5	reserved
 4-3	logical function select
	00 CPU-data overwrites
	01 CPU-data AND with latch-register
	10 CPU-data OR with latch-register
	11 CPU-data XOR with latch-register
 2-0	rotate count
SeeAlso: #P0700


Bitfields for EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors./VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers. GDC mode register:
Bit(s)	Description	(Table P0704)
 7	reserved
 6	(VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers.) 0=standard, 1=enable 256 colors
 5	shift register mode, 0=standard, 1=CGA-graphics
	  (not used on Genoa SuperEGA???)
 4=1	enable odd/even address mode
 3	read mode, 0=mode0, 1=mode1
 2	(EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors.) test condition, 0=standard, 1=output tristate
 1-0	write mode
	00 mode0, plane source is CPU(Central Processing Unit) The microprocessor which executes programs on your computer. or set/reset
	01 mode1, plane source is latch-register
	10 mode2, plane source is CPU(Central Processing Unit) The microprocessor which executes programs on your computer. as set/reset
	11 (VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers.) mode3, CPU(Central Processing Unit) The microprocessor which executes programs on your computer. as set/reset AND bitmask
SeeAlso: #P0700


Bitfields for EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors./VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers. GDC miscellaneous register:
Bit(s)	Description	(Table P0705)
 7-4	reserved (=0)
 3-2	memory map
	00b = A0000..BFFFF (128KB)
	01b = A0000..AFFFF (64KB)
	10b = B0000..B7FFF (32KB)
	11b = B8000..BFFFF (32KB)
 1	chain odd maps to even, 1=subst addess bit0
 0	0=textmode, 1=graphics mode
SeeAlso: #P0700
                                                                                

PORTIBM PC Portable (uses same BIOS as XT) 03CE-03CF - Chips&Technologies - GRAPHICS CONTROLLER EXTENDED REGISTERS
SeeAlso: PORTIBM PC Portable (uses same BIOS as XT) 03CE"EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors."

03CE  RW  graphics address register / GDC index
03CF  RW  other graphics register (see #P0706)


(Table P0706)
Values for Cirrus CL-GD7556 extended GDC registers:
 00h-08h same as EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors./VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers. (see #P0700)
 09h	"GR9" display memory offset 0
 0Ah	"GRA" display memory offset 1
 0Bh	"GRB" graphics controller mode extensions
 0Ch	"GRC" color key compare value / chroma key Y minimum
 0Dh	"GRD" color key compare mask / chroma key Y maximum
 0Eh	"GRE" DPMSsee DOS Protected-Mode Services control
 10h	"GR10" background color expansion 1
 11h	"GR11" foreground color expansion 1
 13h	"GR13" foreground color expansion 2
 16h	"GR16" scanline counter readback (low)
 17h	"GR17" scanline counter readback (high)
 18h	"GR18" EDO RAM(Random Access Memory)	See also DRAM, SRAM. control
 1Ah	"GR1A" scratch pad #6
 1Bh	"GR1B" scratch pad #7
 1Ch	"GR1C" chroma-key U minimum
 1Dh	"GR1D" chroma-key U maximum
 1Eh	"GR1E" chroma-key V minimum
 1Fh	"GR1F" chroma-key V maximum
 20h	"GR20" BitBLT width (low)
 21h	"GR21" BitBLT width (high)
 22h	"GR22" BitBLT height (low)
 23h	"GR23" BitBLT height (high)
 24h	"GR24" BitBLT destination pitch (low)
 25h	"GR25" BitBLT destination pitch (high)
 26h	"GR26" BitBLT source pitch (low)
 27h	"GR27" BitBLT source pitch (high)
 28h	"GR28" BitBLT destination address (low)
 29h	"GR29" BitBLT destination address (middle)
 2Ah	"GR2A" BitBLT destination address (high)
 2Ch	"GR2C" BitBLT source address (low)
 2Dh	"GR2D" BitBLT source address (middle)
 2Eh	"GR2E" BitBLT source address (high)
 2Fh	"GR2F" BitBLT destination write mask
 30h	"GR30" BitBLT mode
 31h	"GR31" BitBLT start/status
 32h	"GR32" BitBLT raster operation
 33h	"GR33" BitBLT mode extensions
!!! (details to be added)
Note:	the scratch pad registers are reserved for use by the VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers. BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware.  The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly.
SeeAlso: #P0700
                                                                                

PORTIBM PC Portable (uses same BIOS as XT) 03CE-03CF - Compaq Qvision - Functionality Level

03CE  -W  graphics address register (index for next port) (see #P0707)
03CF  RW  other graphics register


(Table P0707)
Values for Compaq QVision graphics register index:
 0Ch  RO    controller version
		2Fh Advanced VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers.
		37h early QVision 1024
		71h QVision 1280 or later QVision 1024
 0Dh	    extended controller version
 0Eh	    extended controller capabilities
 0Fh	    environment info
 54h	    available memory
 55h	    phase-locked-loop clock
 56h-57h    controller capabilities