Epson Research and Development
Page 185
Vancouver Design Center
11.2 Image Manipulation
The figure below shows how the screen image is stored in the image buffer and positioned
on the LCD display. The screen image on the CRT/TV is manipulated similarly. When
EISD is enabled (see Section 16, “EPSON Independent Simultaneous Display (EISD)” on
page 210), the images on the LCD and on the CRT/TV are independent of each other.
• For LCD: REG[047h], REG[046h] defines the width of the virtual image.
For CRT/TV: REG[067h], REG[066h] defines the width of the virtual image.
• For LCD: REG[044h], REG[043h], REG[042h] defines the starting word of the
displayed image.
For CRT/TV: REG[064h], REG[063h], REG[062h] defines the starting word of the
displayed image.
• For LCD: REG[048h] defines the starting pixel within the starting word.
For CRT/TV: REG[068h] defines the starting pixel within the starting word.
• For LCD: REG[032h] defines the width of the LCD display.
For CRT/TV: REG[050h] defines the width of the CRT/TV display.
• For LCD: REG[039h], REG[038h] defines the height of the LCD display.
For CRT/TV: REG[057h], REG[056h] defines the height of the CRT/TV display.
Image Buffer
Starting Word
LCD Display
(REG[044h], REG[043h], REG[042h])
Starting Pixel of Word (REG[048h])
Height of LCD Display ((REG[039h], REG[038h])+1) lines
Line 0
Line 1
Screen
Screen
Width of LCD Display ((REG[032h]+1)×8) pixels
Width of Virtual Image
(REG[047h], REG[046h])
Figure 11-2: Image Manipulation
Hardware Functional Specification
Issue Date: 01/02/06
S1D13506
X25B-A-001-10
EPSON [ EPSON COMPANY ]
