27 GRAPHICS ENGINE (GE)
S1C33L26 TECHNICAL MANUAL
Seiko Epson Corporation
27-47
Argument 2 (Image data start address)
D[31:0] Start Address[31:0] Bits
Specifies the memory address from which the image data is stored.
Argument 3 (Coordinates of upper left corner)
D[31:16] Y1 Coordinate[15:0] Bits
Specifies the Y coordinate of the image drawing area upper left corner.
D[15:0] X1 Coordinate[15:0] Bits
Specifies the X coordinate of the image drawing area upper left corner.
Argument 4 (Coordinates of lower right corner)
D[31:16] Y2 Coordinate[15:0] Bits
Specifies the Y coordinate of the image drawing area lower right corner.
D[15:0] X2 Coordinate[15:0] Bits
Specifies the X coordinate of the image drawing area lower right corner.
When the Resize/Tile Select[1:0] bits are set to 0x0 (normal drawing), the coordinate setting values of
the lower right corner are ignored.
Work area
(Clipping area)
X1
Y1
(0, 0)
(X2, Y2)
Y2
X2
Memory
(X1, Y1)
Image data
(X2, Y2)
(X1, Y1)
(X2, Y2)
(X1, Y1)
Normal
(X2, Y2)
(X1, Y1)
Rotation
Resizing
(X1, Y1)
Tiling
(X2, Y2)
5.15.1 Decompression and Drawing
Figure 27.
COPY Command (Copy)
27.5.16
Bit
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
CMD
0x29
0xffff
ARG1
Effect Setting
reserved
reserved
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ARG2
Source Y1 Coordinate
Source X1 Coordinate
ARG3
Source Y2 Coordinate
Source X2 Coordinate
ARG4
Destination Y Coordinate
Destination X Coordinate
The COPY command copies the rectangular area specified with the X and Y coordinates of the upper left and lower
right corners to the destination area specified within the work area. This copy function can guarantee that the source
image will be copied to the destination properly even if the source and destination areas overlap one another. Draw-
ing effects such as clipping and transparency that apply to the destination can also be specified.