Figure 11-2: Image Manipulation - Epson S1D13506 Technical Manual

Page 184
11.2 Image Manipulation
Image Buffer
Starting Word
(REG[044h], REG[043h], REG[042h])
Starting Pixel of Word (REG[048h])
Screen
Width of Virtual Image
(REG[047h], REG[046h])
S1D13506
X25B-A-001-12
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 209), 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.

Figure 11-2: Image Manipulation

LCD Display
Height of LCD Display ((REG[039h], REG[038h])+1) lines
Line 0
Line 1
Screen
Width of LCD Display ((REG[032h]+1)×8) pixels
Epson Research and Development
Vancouver Design Center
Hardware Functional Specification
Issue Date: 02/03/26