M69030 Asiliant Technologies, M69030 Datasheet - Page 327

• 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

BR06
doubleword-writable, byte/word/doubleword-readable at memory offsets 400018 and C00018
shared by both pipelines A and B
Important: This register should never be read while the BitBLT engine is busy.
31-21
20-0
`efmp
A
&
B
A
&
B
31
15

Reserved (Writable)
Source Address
69030 Databook
30
14
Source Address Register
These bits should always be written with the value of 0.
When the source data is located within the frame buffer, these bits are used to specify the
starting address of the source data within the frame buffer as an offset from the beginning
of the frame buffer to where the first byte of source data is located.
When the source data is provided by the host CPU through the BitBLT data port and that
source data is in color, only bits 2-0 are used and the upper bits are ignored. These lower
3 bits are used to indicate the position of the first valid byte within the first quadword of the
source data.
When the source data is provided by the host CPU through the BitBLT data port and that
source data is monochrome, the BitBLT engine ignores this register entirely.
29
13
28
12
27
(0000:0000:000)
11
Reserved
26
10
Source Address Bits 15-0
25
BitBLT Registers
9
(xxxx:xxxx:xxxx:xxxx)
24
8
23
7
22
6
21
5
20
4
Source Address Bits 20-16
19
3
Revision 1.3 11/24/99
(x:xxxx)
18
2
17
1
17-13
16
0