M69000 Asiliant Technologies, M69000 Datasheet - Page 157

• Manufacturer Part Number: M69000
• Manufacturer: Asiliant Technologies

Specifications of M69000

• Lead Free Status / Rohs Status: Supplier Unconfirmed

12-4
2
Note:
1
0
AR11
read at I/O address 3C1h, write at I/O address 3C0h with index at address 3C0h set to 11h
7-0
&+,36
7
Enable Line Graphics Character Code
In IBM
include the line-drawing characters is mistakenly specified as C0h to DFh, rather than the correct
range of B0h to DFh.
Select Display Type
Graphics/Alphanumeric Mode
Overscan
69000 Databook
Overscan Color Register
®
0: Every 9th pixel of a horizontal line (i.e., the last pixel of each horizontal line of each 9-
pixel wide character box) is assigned the same attributes as the background of the
character of which the given pixel is a part.
1: Every 9th pixel of a horizontal line (i.e., the last pixel of each horizontal line of each 9-
pixel wide character box) is assigned the same attributes as the 8th pixel if the character of
which the given pixel is a part. This setting is intended to accommodate the line-drawing
characters of the PC’s extended ASCII character set -- characters with an extended ASCII
code in the range of B0h to DFh.
literature describing the VGA standard, the range of extended ASCII codes that are said to
0: Attribute bytes in text modes are interpreted as they would be for a color display.
1: Attribute bytes in text modes are interpreted as they would be for a monochrome display.
0: Selects alphanumeric (text) mode.
1: Selects graphics mode.
These 8 bits select the overscan (border) color. The border color is displayed during the
blanking intervals. For monochrome displays, this value should be set to 00h.
6
5
Subject to Change Without Notice
Attribute Controller Registers
4
Overscan Color
3
2
Revision 1.3 8/31/98
1
0