M69000 Asiliant Technologies, M69000 Datasheet - Page 249

• Manufacturer Part Number: M69000
• Manufacturer: Asiliant Technologies

Specifications of M69000

• Lead Free Status / Rohs Status: Supplier Unconfirmed

15-34
FR41
read/write at I/O address 3D1h with index at I/O address 3D0h set to 41h
This register is used when FR01 bit 1 is set to 1 and FR40 bit 0 is set to 1 and graphics mode is enabled.
This register must be set before FR40.
7-4
1
3
2
Note:
1
Note:
0
Note:
&+,36
7
Reserved
Reserved (R/W) (reset state: 0)
FP Enable Horizontal Stretching for 1024-column Graphics Mode
0: Disable horizontal stretching for 1024-column graphics mode.
1: Enable horizontal stretching for 1024-column graphics mode.
FP Enable Horizontal Stretching for 800-column Graphics Mode
0: Disable horizontal stretching for 800-column graphics mode.
1: Enable horizontal stretching for 800-column graphics mode.
FP Enable Horizontal Stretching for 640-column Graphics Mode
0: Disable horizontal stretching for 640-column graphics mode.
1: Enable horizontal stretching for 640-column graphics mode.
69000 Databook
That 1024-column graphics mode includes 512-column graphics mode with horizontal pixel
doubling enabled.
That 800-column graphics mode includes 400-column graphics mode with horizontal pixel
doubling enabled.
The 640-column graphics mode includes 320-column graphics mode with horizontal pixel
doubling enabled.
Horizontal Stretching Register
6
Reserved
(0000)
5
Subject to Change Without Notice
Flat Panel Registers
4
Reserved
(R/W)
3
Hor Stretch
1024 Col
2
Hor Stretch
800 Col
Revision 1.3 8/31/98
1
Hor Stretch
640 Col
0