sed1355 ETC-unknow, sed1355 Datasheet - Page 141

• Manufacturer Part Number: sed1355
• Description: Sed1355 Embedded Ramdac Lcd/crt Controller
• Manufacturer: ETC-unknow

Epson Research and Development
Vancouver Design Center
12.3 Ink/Cursor Image Manipulation
12.3.1 Ink Image
12.3.2 Cursor Image
Hardware Functional Specification
Issue Date: 99/05/18
Note
The image data for pixel n, (A
The Ink image should always start at the top left pixel, i.e. Cursor X Position and Cursor Y Position
registers should always be set to zero. The width and height of the ink image are automatically calcu-
lated to completely cover the display.
The Cursor image size is always 64x64 pixels. The Cursor X Position and Cursor Y Position
registers specify the position of the top left pixel. The following diagram shows how to position a
cursor.
where
There is no means to set a negative cursor position. If a cursor must be set to a negative position,
this must be dealt with through software.
(A
n
00
01
10
11
,B
n
)
x = (REG[29h] bits [1:0], REG[28h])
y = (REG[2Bh] bits [1:0], REG[2Ah])
P(0;0)
Inverted Background
Figure 12-2: Cursor Positioning
Background
Color 0
Color 1
Color
P(x;y+63)
P(x;y)
n
,B
Table 12-2: Ink/Cursor Color Select
n
), selects the color for pixel n as follows:
P(x+63;y)
P(x+63;y+63)
Ink/Cursor Color 0 Register, (REG[2Dh],REG[2Ch])
Ink/Cursor Color 1 Register, (REG[2Fh],REG[2Eh])
Ink/Cursor is transparent – show background
Ink/Cursor is transparent – show inverted
background
REG[29h] bit 7 = 0
REG[2Bh] bit 7 = 0
Comments
X23A-A-001-11
SED1355
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