Hitachi HD64411 Q2 User Manual page 86

Quick 2d graphics renderer
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Multi-Valued
Binary
Source
Source
×
O
TRNS
STYL
Reserved
Fixed at
O
0
O : Can be used
∆ : Referenced depending on mode
× : Cannot be used
◊ : Cannot be specified simultaneously
3. Command Parameters
SOURCE ADDRESS H: 1-bit/pixel source start upper address
SOURCE ADDRESS L: 1-bit/pixel source start lower address
TDX, TDY: Source size
DXn, DYn (n = 1 to 4): Rendering coordinates, work coordinates
COLOR0, COLOR1: 8 or 16-bit/pixel color specifications
Description
Transfers binary (1-bit/pixel) source data to any quadrilateral rendering area, expanding the data to
the colors specified by parameters COLOR0 and COLOR1. The source is always scanned
horizontally, but diagonal scanning may be used in the drawing, depending on the shape. In
diagonally-scanned drawing, double-writing occurs to fill in gaps.
When repeated source referencing is selected as a rendering attribute (STYL = 1), the source is not
enlarged or reduced, but is referenced repeatedly.
When work referencing is selected as a rendering attribute (WORK = 1), transfer is performed while
referencing work area data for the same coordinates as the rendering coordinates.
The TDX value is specified in multiples of 8 pixels.
Example
Reference Data
Binary
Work
Draw Mode
CLIP
NET
Reserved
O
Fixed at
O
0
Drawing Destination
Specified
Color
Rendering
×
O
EOS
Reserved
O
Fixed at
Fixed at
0
0
Work
×
HALF
WORK
O
79

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