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Epson Research and Development
Vancouver Design Center
8.4.3 Ink Layer Image
The following procedures demonstrate how to write an image to the Ink Layer buffer.
Landscape Mode (no rotation)
1. For the LCD, calculate the start address based on the value in REG[071h].
For the CRT/TV, calculate the start address based on the value in REG[081h].
Refer to the REG[071h] and REG[081h] register descriptions for more information.
2. Write the Ink Layer image to the display buffer. The image must be exactly (display
width x display height ÷ 4) bytes.
SwivelView Modes
1. Save the current state of REG[1FCh] bit 6.
2. Set REG[1FCh] bit 6 to 0.
3. For the LCD, calculate the start address based on the value in REG[071h].
For the CRT/TV, calculate the start address based on the value in REG[081h].
Refer to the REG[071h] and REG[081h] register descriptions for more information.
4. Perform a software rotate of the Ink Layer image.
5. Write the rotated Ink Layer image to the display buffer. The image must be exactly
(display width x display height ÷ 4) bytes.
6. Restore the original state of REG[1FCh] bit 6.
Note
It is possible to use the same Ink Layer image for both LCD and CRT/TV displays. Pro-
gram the LCD and CRT/TV Ink/Cursor Start Address registers (REG[071h] and
REG[081h]) to the same location. This save some display buffer which would otherwise
be used by a second Ink Layer.
S1D13506
X25B-G-003-03
Programming Notes and Examples
Issue Date: 01/02/06
EPSON [ EPSON COMPANY ]
