參數(shù)資料
型號(hào): 30046-23
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 微控制器/微處理器
英文描述: Low Power Integrated x86-Compatible 32-Bit Geode GXLV Processor(低功耗集成兼容X86的32位 Geode GXLV技術(shù)處理器)
中文描述: 32-BIT, 200 MHz, MICROPROCESSOR, CPGA320
封裝: SPGA-320
文件頁(yè)數(shù): 132/247頁(yè)
文件大小: 4379K
代理商: 30046-23
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132
Revision 1.2
Integrated Functions (
Continued
)
G
9:8
PM
Pattern Mode:
Specifies the format of the pattern data.
00 = Indicates a solid pattern. The pattern data is always sourced from the GP_PAT_COLOR_0 register.
01 = Indicates a monochrome pattern. The pattern data is sourced from the GP_PAT_COLOR_0 and
GP_PAT_COLOR_1 registers.
10 = Indicates a dither pattern. All four pattern color registers are used.
11 = Indicates a color pattern. The pattern data is sourced directly from the pattern data registers.
Raster Operation:
Specifies the raster operation for pattern, source, and destination data.
Note:
Writing to this register launches a raster operation.
7:0
ROP
GX_BASE+8204h-8207h
GP_VECTOR_MODE Register (R/W)
Default Value = 00000000h
31:4
3
2
1
0
RSVD
DEST
DMIN
DMAJ
YMAJ
Reserved:
Set to 0.
Read Destination Data:
Indicates that frame-buffer destination data is required.
Minor Direction:
Indicates a positive minor axis step.
Major Direction:
Indicates a positive major axis step.
Major Direction:
Indicates a Y major vector.
GX_BASE+8208h-820Bh
GP_BLT_MODE Register (R/W)
Default Value = 00000000h
31:9
8
RSVD
Y
Reserved:
Set to 0.
Reverse Y Direction:
Indicates a negative increment for the Y position. This bit is used to control the direc-
tion of screen to screen BLTs to prevent data corruption in overlapping windows.
Source Mode:
Specifies the format of the source data.
00 = Source is a color bitmap.
01 = Source is a monochrome bitmap (use source color expansion).
10 = Unused.
11 = Source is a text glyph (use source color expansion). This differs from a monochrome bitmap in that the
X position is adjusted by the width of the BLT and the Y position remains the same.
Reserved:
Set to 0.
Destination Data:
Specifies the destination data location.
000 = No destination data is required. The destination data into the raster operation unit is all ones.
010 = Read destination data from BLT Buffer 0.
011 = Read destination data from BLT Buffer 1.
100 = Read destination data from the frame buffer (store temporarily in BLT Buffer 0).
101 = Read destination data from the frame buffer (store temporarily in BLT Buffer 1).
Source Data:
Specifies the source data location.
00 = No source data is required. The source data into the raster operation unit is all ones.
01 = Read source data from the frame buffer (temporarily stored in BLT Buffer 0).
10 = Read source data from BLT Buffer 0.
11 = Read source data from BLT Buffer 1.
Note:
Writing to this register launches a BLT operation.
7:6
SM
5
RSVD
RD
4:2
1:0
RS
GX_BASE+820Ch-820Fh
GP_BLT_STATUS Register (R/W)
Default Value = 00000000h
31:10
9
RSVD
W
Reserved:
Set to 0.
Screen Width:
Selects a frame-buffer width of 2048 bytes (default is 1024 bytes). This register must be pro-
grammed correctly in order for compression to work.
16-bpp Mode:
Selects a pixel data format of 16-bpp (default is 8-bpp).
Reserved:
Set to 0.
BLT Pending (Read Only):
Indicates that a BLT operation is pending in the master registers.
The
BLT Pending
bit must be clear before loading any of the graphics pipeline registers. Loading registers
when this bit is set high will destroy the values for the pending BLT.
8
M
7:3
2
RSVD
BP (RO)
Table 4-24. Graphics Pipeline Configuration Registers (Continued)
Bit
Name
Description
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