M69030 Asiliant Technologies, M69030 Datasheet - Page 173

• Manufacturer Part Number: M69030
• Manufacturer: Asiliant Technologies

Specifications of M69030

• Operating Temperature (min): 0C
• Operating Temperature Classification: Commercial
• Operating Temperature (max): 70C
• Rad Hardened: No
• Lead Free Status / Rohs Status: Supplier Unconfirmed

AR13
read at I/O address 3C1h, write at I/O address 3C0h with index at address 3C0h set to 13h
shadowed for pipelines A and B
7-4
3-0
`efmp
A
B

Reserved
Horizontal Pixel Shift
69030 Databook
7
Horizontal Pixel Panning Register
Bits 3-0 of this register hold a 4-bit value that selects number of pixels by which the image
is shifted horizontally to the left. This function is available in both text and graphics modes.
In text modes with a 9-pixel wide character box, the image can be shifted up to 8 pixels to
the left. In text modes with an 8-pixel wide character box, and in graphics modes other than
those with 256 colors, the image can be shifted up to 7 pixels to the left.
In standard VGA mode 13h (where bit 6 of the Mode Control Register, AR10, is set to 1 to
support 256 colors), bit 0 of this register must remain set to 0, and the image may be shifted
up to only 3 pixels to the left. In this mode, the number of pixels by which the image is
shifted can be further controlled using bits 6 and 5 of the Preset Row Scan Register (CR08).
6
Value in
Bits 3-0
Reserved
Reserved
0h
1h
2h
3h
4h
5h
6h
7h
8h
5
Attribute Controller Registers
9 Pixel Text
Number of Pixels Shifted
1
2
3
4
5
6
7
8
0
4
8-Pixel Text
& Graphics
Undefined
0
1
2
3
4
5
6
7
3
Horizontal Pixel Shift
Horizontal Pixel Shift
256-Color
Undefined
Undefined
Undefined
Undefined
Undefined
Graphics
2
0
1
2
3
Revision 1.3 11/24/99
1
0
12-7