SPC8104 S-MOS Systems, SPC8104 Datasheet - Page 131

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

SPC8104
All other registers are preserved.
Function 03h - Return current VBE Mode
All other registers are preserved.
Function 04h - Save/Restore state
All other registers are preserved.
Function 05h - Display Window Control
412-1.0
Return:
Input:
Return:
Input:
Return:
Input:
Return:
S-MOS Systems, Inc. • Tel: [phone] • Fax: [phone] • http://www.smos.com
AX
AX
AX
BX
AX
DL
CX
ES:BX
AX
BX
AX
BH
BL
DX
AX
=
= 4F03h
=
=
=
=
=
=
=
D0 =
D1=
D2=
D3=
=
=
=
= 4F05h
= 00h
= 01h
=
= 00h
= 01h
=
=
D0-D8 = Mode number
D9-D13 = Reserved (must be 0)
D14 = 0 Use windowed frame buffer model
D15 = 0 Clear display memory
VBE Return Status
Return current VBE Mode
VBE Return Status
Current VBE mode
D0-D13 = Mode number
D14 = 0 Windowed frame buffer model
D15 = 0 Memory cleared at last mode set
4F04h Save/Restore state
00h Return save/restore state buffer size
01h Save state
02h Restore state
Requested states
Save/restore controller hardware state
Save/restore BIOS data state
Save/restore DAC state
Save/restore Register state
Pointer to buffer (if DL <> 00h)
VBE Return Status
Number of 64-byte blocks to hold the state buffer (if
DL=00h)
VBE Display Window Control
Set memory window
Get memory window
Window number
Window A
Window B
Window number in video memory in window granularity
units (Set Memory Window only)
VBE Return Status
= 1 Use linear/flat frame buffer model
= 1 Don't clear display memory
= 1 Linear/flat frame buffer model
= 1 Memory not cleared at last mode set
X15-SP-002-03
BIOS Functional Specification
SP2-25