ALXD800EEXJ2VD AMD (ADVANCED MICRO DEVICES), ALXD800EEXJ2VD Datasheet - Page 265

• Manufacturer Part Number: ALXD800EEXJ2VD
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of ALXD800EEXJ2VD

• Operating Temperature (min): 0C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

Graphics Processor Register Definitions
6.4.2.12 Vector Mode (GP_VECTOR_MODE)
GP Memory Offset 3Ch
Type
Reset Value
Writing to this register configures the vector mode and initiates the rendering of the vector. If a BLT or vector operation is
already in progress when this register is written, the BLT pending bit in GP_BLT_STATUS (GP Memory Offset 44h)is set
and the vector is queued to begin when the current operation is complete. Software should not write to any register (other
than GP_HOST_SRC if required) while the BLT pending bit is set since it will corrupt the pending vector operation. Setting
the TH bit causes the vector operation to wait until the next VBLANK before beginning rendering. Software may still queue
another operation behind a throttled vector as long as the BLT pending bit is clear.
AMD Geode™ LX Processors Data Book
31 30
31:6
Bit
7:0
Bit
5
4
3
2
1
0
29
Name
Name
RSVD
CP
TH
DR
DN
DJ
YJ
ROP/a
28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6
R
WO
00000000h
GP_RASTER_MODE Bit Descriptions (Continued)
Description
Raster Operations (ROP). Combination rule for source, pattern and destination when
performing raster operations. (See Section 6.3.10 "Raster Operations (ROP)" on page
249.)
Alpha Value (a
ations.
Description
Reserved. Write to 0.
Checkpoint. Generates interrupt when this vector is completed if checkpoint interrupt is
enabled.
Throttle.
0: Operation begins immediately.
1: Operation waits until next VBLANK before beginning.
Destination Required.
0: Destination data is not needed for operation.
1: Destination data is needed from frame buffer.
Minor Direction.
0: Negative minor axis step.
1: Positive minor axis step.
Major Direction.
0: Negative major axis step.
1: Positive major axis step
Y Major.
0: X major vector.
1: Y major vector.
GP_VECTOR_MODE Bit Descriptions
GP_VECTOR_MODE Register Map
RSVD
R
). Alpha value that can be used for some of the alpha compositing oper-
33234C
CP TH DR DN DJ
5
4
3
2
1
YJ
265
0