SPC8106 S-MOS Systems, SPC8106 Datasheet - Page 193

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

The format of the save buffer is as follows:
SPC8106
Emulating IBM code this function does not save the latch data or color select register 14h of the
Attributes Controller. Because it doesn't get saved or restored, we don't touch it at all.
Offsets
411-1.0
Function 1Ch - Save/Restore Video State
Input:
Return:
00h
02h
04h
06h 0Dh x DW
7 6 5 4 3 2 1 0
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AH=1Ch
AL
ES:BX
CX
AL=1Ch
BX
DW
DW
DW
Table 0-2 Information Block Offset 32
B i t s
Save/Restore Video State
Function request (0-2)
00 - Return size of buffer
01 - Save video state
02 - Restore video state
Pointer to buffer
Bit map of request
001 - Video h/w status
010 - Video data arena
100 - Video DAC and color registers
Buffer size if AL input =00
Offset to the Video Hardware Status buffer
Offset to the Video Data Arena buffer
Offset to the DAC and Color Registers buffer
Reserved (uninitialized)
Parameter Pointer Save Set
Aux Alpha Pointer Set
Aux Graphics Pointer Set
User PAlette Profile Pointer Set
Second Aux Alpha Pointer Set
DCC Table Pointer Set
Reserved
X12-SP-002-03.1
BIOS Functional Specification
SP2-23