M69030 Asiliant Technologies, M69030 Datasheet - Page 147

• 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

CR79
read/write at I/O address 3B5h/3D5h with index at address 3B4h/3D4h set to 79h
shadowed only for pipeline B
7-3
2-0
`efmp
A
B

Reserved
Horizontal Total Fine Adjust
69030 Databook
7
NTSC/PAL Horizontal Total Fine Adjust Register
These 3 bits can be use to specify a number of pixel clocks to be added to the horizontal
total specified either by the Horizontal Total Register (CR00) alone in VGA standard
modes, or by the Horizontal Total Register (CR00) in conjunction with the Extended
Horizontal Total Register (CR38) for extended modes -- both of which specify their
respective portions of the horizontal total in units of character clocks. The pixel clock
granularity of these 3 bits permit the horizontal total to be specified with greater precision
than is possible with character clocks, alone.
6
Reserved (Writable)
(0000:0)
5
CRT Controller Registers
4
reserved
3
2
Horizontal Total Fine Adjust
NTSC/PAL
Revision 1.3 11/24/99
(000)
1
0
9-45