SPC8106 S-MOS Systems, SPC8106 Datasheet - Page 222

• Manufacturer Part Number: SPC8106
• Description: LCD/CRT VGA CONTROLLER
• Manufacturer: S-MOS Systems

The mode information block has the following structure:
ModeInfoBlock
; Mandatory information for all VBE revisions
; Mandatory information for VBE 1.2 and above
; Direct Color fields (required for direct/6 and YUV/7 memory models)
; Mandatory information for VBE 2.0 and above
ModeInfoBlock ends
BIOS Functional Specification
SP2-52
ModeAttributes
WinAAttributes
WinBAttributes
WinGranularity
WinSize
WinASegment
WinBSegment
WinFuncPtr
BytesPerScanLine
XResolution
YResolution
XCharSize
YCharSize
NumberOfPlanes
BitsPerPixel
NumberOfBanks
MemoryModel
BankSize
NumberOfImagePagesdb ?
Reserved
RedMaskSize
RedFieldPosition
GreenMaskSize
GreenFieldPositiondb ?
BlueMaskSize
BlueFieldPosition db ?
RsvdMaskSize
RsvdFieldPosition db ?
DirectColorModeInfodb?
PhysBasePtr
OffScreenMemOffsetdd ?
OffScreenMemSize
Reserved
S-MOS Systems, Inc. • Tel: [phone] • Fax: [phone] • http://www.smos.com
struc
dw ?
db ?
db ?
dw ?
dw ?
dw ?
dw ?
dd ?
dw ?
dw ?
dw ?
db ?
db ?
db ?
db ?
db ?
db ?
db ?
db 1
db ?
db ?
db ?
db ?
db ?
dd ?
dw ?
db 206 dup (?); remainder of ModeInfoBlock
; mode attributes
; window A attributes
; window B attributes
; window granularity
; window size
; window A start segment
; window B start segment
; pointer to window function
; bytes per scan line
; horizontal resolution in pixels or
; characters
; vertical resolution in pixels or characters
; character cell width in pixels
; character cell height in pixels
; number of memory planes
; bits per pixel
; number of banks
; memory model type
; bank size in KB
; number of images
; reserved for page function
; size of direct color red mask in bits
; bit position of lsb of red mask
; size of direct color green mask in bits
; bit position of lsb of green mask
; size of direct color blue mask in bits
; bit position of lsb of blue mask
; size of direct color reserved mask
; in bits
; bit position of lsb of reserved mask
; direct color mode attributes
; physical address for flat memory
; frame buffer
; pointer to start of off screen memory
; amount of off screen memory in 1k units
X12-SP-002-03.1
411-1.0
SPC8106