SPC8104 S-MOS Systems, SPC8104 Datasheet - Page 134

• Manufacturer Part Number: SPC8104
• Description: VGA LCD CONTROLLER
• Manufacturer: S-MOS Systems

The VESA VBE sub-Function 10h is used to implement the VBE/PM services. The VBE/PM ser-
vices are defined as follows:
BIOS Functional Specification
SP2-28
Function 10h - Display Power Management Extensions
Sub-Function 00h - Report VBE / PM Capabilities
Sub-Function 01h - Set Display Power State
Sub-Function 02h - Get Display Power State
Input:
Return:
All other registers may be destroyed.
Input:
Return:
All other registers may be destroyed.
Input:
S-MOS Systems, Inc. • Tel: [phone] • Fax: [phone] • http://www.smos.com
AH
AL
BL
CX
ES:DI
AX
BH
BL
CX
ES:DI
AH
AL
BL
BH
CX
AX
BH
CX
AH
= 4Fh
= 10h
= 00h
= 00h
=
=
=
=
= 4Fh
= 10h
= 01h
= 00h
= 01h
= 02h
= 04h
= 08h
All other BH values are currently undefined and are reserved
for future power control of the display controller.
= 00h
=
=
=
= 4Fh
VESA Extension.
VBE/PM Services.
Report VBE/PM Capabilities.
Controller unit number (00 = primary controller).
Null pointer, must be 0000:0000h in version 1.0.
Reserved for future use.
Status.
Power saving state signals supported by the
controller. 1 = supported, 2 = not supported
bit 0 STANDBY
bit 1 SUSPEND
bit 2 OFF
bit 3 REDUCED ON
bits 4-7 reserved for future power control of the
VBE/PM version number (0001 0000b for this version).
bits 0-3 minor version number
bits 4-7 major version number
Unchanged
Unchanged
VESA Extension.
VBE/PM Services.
Set Display Power State.
ON
STANDBY
SUSPEND
OFF
REDUCED ON
Controller unit number (00 = primary controller).
Status.
Unchanged
Unchanged
VESA Extension.
display controller or other related
circuits.
X15-SP-002-03
412-1.0
SPC8104