SPC8106 S-MOS Systems, SPC8106 Datasheet - Page 192
![no-image](/images/no-image-200.jpg)
SPC8106
Manufacturer Part Number
SPC8106
Description
LCD/CRT VGA CONTROLLER
Manufacturer
S-MOS Systems
Datasheet
1.SPC8106.pdf
(432 pages)
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The format of the information block is as follows:
BIOS Functional Specification
SP2-22
Function 1Bh - Return Functionality/State Information
Input:
Return:
Offset
00
04
05
07
09
0B 8h x DW
1B
1D
1E
20
21
22
23
25
26
27
29
2A
2B
2C
2D
2E 3h x DB
31
32
33 Dh x DB
S-MOS Systems, Inc. • Tel: (408) 922-0200 • Fax: (408) 922-0238 • http://www.smos.com
7 6 5 4 3 2 1 0
AH=1Bh
BX
ES:DI
AL=1Bh
ES:DI
Type
DD
DB
DW
DW
DW
DW
DB
DW
DB
DB
DB
DW
DB
DB
DW
DB
DB
DB
DB
DB
DB
DB
Table 0-1 Information Block Offset 2D
B i t s
Return Functionality/State Information
Implementation type (must be 00)
Pointer to buffer
Contains information
Description
Pointer to static functionality table
CRT video mode-------------------+
CRT columns
VRAM page length
VRAM start address
Cursor row/column for 8 pages
Cursor type
Active page
CRTC address
Port 3D8 data
Port 3D9 data
Number of rows
Point size
Active DCC
Auxiliary DCC
Number of colors this mode
Number of pages this mode
Number of scans this mode (0=200 1=350 2=400 3=480)
Primary character block
Secondary character block
Misc. state info (see table below)
Reserved (set to zero)
VRAM size (0=64K 1=128K 2=192K 3=256K)
Save pointer state info (see table below)
Reserved (set to zero)
Sum to Gray
Gray-Scale Display
Keep Palette / DAC on Mode Set
Cursor Emulation
Single CRT
Blink / Bold Bit
Reserved
---------------------+
X12-SP-002-03.1
|
|
|
+These are values
|directly copied
|from low memory.
|
|
|
|
411-1.0
SPC8106
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