M69030 Asiliant Technologies, M69030 Datasheet - Page 146
M69030
Manufacturer Part Number
M69030
Description
Manufacturer
Asiliant Technologies
Datasheet
1.M69030.pdf
(387 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
M69030
Manufacturer:
CHIPS
Quantity:
20 000
Part Number:
M69030P
Manufacturer:
MIT
Quantity:
20 000
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9-44
CR78
read/write at I/O address 3B5h/3D5h with index at address 3B4h/3D4h set to 78h
shadowed only for pipeline B
7
6-5
4-0
`efmp
A
B
Redux En
Vertical
Vertical Reduction Enable
Reserved
Vertical Reduction Line Dropping Interval
69030 Databook
(0)
7
NTSC/PAL Vertical Reduction Register
0: Vertical reduction is disabled. This is the default after reset.
1: Vertical reduction is enabled
These bits always return the value of 0 when read.
When bit 7 of this register is set to 1, these 5 bits specify the number of scanlines remaining
(those which will be drawn on the display) between each of the scanlines that are to be
dropped (those which will NOT be drawn on the display).
Reserved
(0)
6
4 3 2 1 0
0 0 0 0 0
0 0 0 0 1
0 0 0 1 0
1 1 1 1 1
Reserved
Bit
to
(0)
5
CRT Controller Registers
Number of Scanlines Remaining
Between Dropped Scanlines
4
reserved
Reserved
Reserved
31
to
2
Vertical Reduction Line Dropping Interval
3
(0:0000)
2
Revision 1.3 11/24/99
1
0
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