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438 AMD Geode™ LX Processors Data Book
Video Processor Register Descriptions
33234H
6.8.3.22 Cursor Color 2 (CC2)
6.8.3.23 Alpha Window 1 X Position (A1X)
VP Memory Offset 0B8h
Typ e R /W
Reset Value 00000000_00000000h
CC2 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
313029282726252423222120191817161514131211109876543210
RSVD CUR_COLOR_REG2
CC2 Bit Descriptions
Bit Name Description
63:24 RSVD (RO) Reserved (Read Only). Reads back as 0.
23:0 CUR_COLOR_
REG2
Cursor Color Register 2. Specifies a 24-bit cursor color value. This is an RGB value (for
RGB blending).
This is one of two possible cursor color values.COLOR_REG_OFFSET (VP Memory Off-
set 0A0h[28:24] determine a bit of the graphics data that if odd, selects this color to be
used.
VP Memory Offset 0C0h
Typ e R /W
Reset Value 00000000_00000000h
A1X 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
313029282726252423222120191817161514131211109876543210
RSVD ALPHA1_X_END RSVD ALPHA1_X_START
A1X Bit Descriptions
Bit Name Description
63:28 RSVD (RO) Reserved (Read Only). Reads back as 0.
27:16 ALPHA1_X_
END
Alpha Window 1 X End. Indicates the horizontal end position of alpha window 1. This
value is calculated according to the following formula:
Value = Desired screen position + (H_TOTAL – H_SYNC_END) – 1. (Note 1)
15:12 RSVD (RO) Reserved (Read Only). Reads back as 0.
11:0 ALPHA1_X_
START
Alpha Window 1 X Start. Indicates the horizontal start position of alpha window 1. This
value is calculated according to the following formula:
Value = Desired screen position + (H_TOTAL – H_SYNC_END) – 2. (Note 1)
Note 1. H_TOTAL and H_SYNC_END are values programmed in the Display Controller module registers.
The value of (H_TOTAL – H_SYNC_END) is sometimes referred to as “horizontal back porch.”