36 alpha watch (awt), 37 video processor test mode (vtm), Alpha watch (awt) – AMD Geode LX [email protected] User Manual
Page 448: Video processor test mode (vtm)
448
AMD Geode™ LX Processors Data Book
Video Processor Register Descriptions
33234H
6.8.3.36 Alpha Watch (AWT)
Alpha values may be automatically incremented/decremented for successive frames. This register can be used to read
alpha values that are being used in the current frame.
6.8.3.37 Video Processor Test Mode (VTM)
VP Memory Offset 128h
Type
RO
Reset Value
00000000_00000000h
AWT Register Map
63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32
RSVD
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
RSVD
AW3
AW2
AW1
AWT Bit Descriptions
Bit
Name
Description
63:24
RSVD
Reserved. Reads back as 0.
23:16
AW3
Alpha Value for Window 3.
15:8
AW2
Alpha Value for Window 2.
7:0
AW1
Alpha Value for Window 1.
VP Memory Offset 130h
Type
R/W
Reset Value
00000000_00000000h
VTM Register Map
63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32
RSVD
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
SP
RSVD
SP
RSVD
RSVD
RSVD
VTM Bit Descriptions
Bit
Name
Description
63:32
RSVD (RO)
Reserved (Read Only). Reads back as 0.
31
SP
Spare. Read/write; no function.
30:11
RSVD (RO)
Reserved (Read Only). Reads back as 0.
10:9
SP
Spares. Read/write; no function.
8:7
RSVD (RO)
Reserved (Read Only). Reads back as 0.
6
RSVD
Reserved. Reserved for test purposes.
5:4
RSVD (RO)
Reserved (Read Only). Reads back as 0.
3:0
RSVD
Reserved. Reserved for test purposes.