SPC8104 S-MOS Systems, SPC8104 Datasheet - Page 117
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SPC8104
Manufacturer Part Number
SPC8104
Description
VGA LCD CONTROLLER
Manufacturer
S-MOS Systems
Datasheet
1.SPC8104.pdf
(306 pages)
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4.0
4.1
These functions are the IBM defined functions that are supported on all VGA compatible prod-
ucts. These functions are supported in the SPC8104F0A BIOS with the noted exceptions. These
functions are called using the standard INT 10h interface. To call these functions:
SPC8104
Function 00h - Set Video Mode
Function 01h - Set Cursor Type
Function 02h - Set Cursor Position
Function 03h - Read Cursor Position
412-1.0
MOV AH, function number
MOV other register, other parameters
INT 10H
Input:
Return:
Input:
Return:
Input:
Return:
Destroyed:AX,SI
Input:
Return:
MAIN BIOS FUNCTION SUMMARY
Supported BIOS Functions
S-MOS Systems, Inc. • Tel: (408) 922-0200 • Fax: (408) 922-0238 • http://www.smos.com
AH=00h
AL
n/a
AH=01h
CH
CL
n/a
AH=02h
BH
DL
DH
n/a
AH=03h
BH
CX
DX
Set Video Mode
Video mode (bit 7 set prevents VRAM clear)
Set Cursor Type
Cursor start scan
Cursor end scan
Set Cursor Position
Page number
Column (0-x)
Row (0-x)
Read Cursor Position
Page number
Current cursor mode
Current cursor position
X15-SP-002-03
BIOS Functional Specification
SP2-11
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