SPC8104 S-MOS Systems, SPC8104 Datasheet - Page 152
SPC8104
Manufacturer Part Number
SPC8104
Description
VGA LCD CONTROLLER
Manufacturer
S-MOS Systems
Datasheet
1.SPC8104.pdf
(306 pages)
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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
SP2-46
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 ? ; direct color mode attributes
PhysBasePtr
OffScreenMemOffsetdd
OffScreenMemSize
Reserved
S-MOS Systems, Inc. • Tel: (408) 922-0200 • Fax: (408) 922-0238 • http://www.smos.com
struc
dw
db
db
dw
dw
dw
dw
dd
dw
dw
dw
db
db
db
db
db
db
db
db
db
db
db
db
db
dd
dw
db
? ; 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
? ; vertical resolution in pixels or
? ; 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
1 ; 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
? ; physical address for flat memory
? ; pointer to start of off screen memory
? ; amount of off screen memory in 1k units
206 dup (?0; remainder of ModeInfoBlock
; characters
; characters
frame buffer
X15-SP-002-03
412-1.0
SPC8104
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