Epson Research and Development
Page 179
Vancouver Design Center
Solid Fill
The Solid Fill Blit fills a specified blit area with a solid color as defined in the Foreground
Color Register. In 8 bpp mode, only the low byte of the Foreground Color is used for solid
fill.
Pattern Fill
The Pattern Fill Blit fills a specified blit area with an 8 pixel by 8 line pattern in full color
defined in off-screen display buffer. The pattern data has to be stored in a contiguous
address (i.e. for 8 and 16 bpp, the pattern data will occupy 64 and 128 bytes respectively
starting from the base address).
Any pixel within the 8x8 pattern can be used to start the fill area. The least significant bits
of the source address start register are used to specify the starting pixel.
The 2D engine can detects the end of each line and continues from the beginning of the next
line. When the last line of pattern is encountered, the first line of the pattern will be drawn
on the following line.
Supports two full 16-bit operand ROP functions.
Note
The BitBlt operation Pattern Fill with ROP requires a BitBlt width ≥ 2. The BitBlt width
is set in REG[110h], REG[111h].
Transparent Pattern Fill
The Transparent Pattern Fill fills a specified blit area with an 8 pixel by 8 line pattern in full
color defined in off-screen display buffer. The pattern data has to be stored in a contiguous
address (i.e. for 8 and 16 bpp, the pattern data will occupy 64 and 128 bytes respectively
starting from the base address).
When the pattern color is equal to the key color, which is defined in Background Color
Register, the destination area is not updated. In 8 bpp mode, only the low byte of the key
color is used for comparison.
For this blit no raster operation is applied.
Note
The BitBlt operation Pattern Fill with transparency requires a BitBlt width ≥ 2. The
BitBlt width is set in REG[110h], REG[111h].
Transparent Write Blit
The Transparent Write Blit supports bit block transfers from the host to display buffer.
Hardware Functional Specification
Issue Date: 01/02/06
S1D13506
X25B-A-001-10
EPSON [ EPSON COMPANY ]
