Motorola MC68VZ328 Manuale Utente
8-12
MC68VZ328 User’s Manual
Programming Model
8.3.4
LCD Screen Height Register
The LCD screen height register (LYMAX) is used to define the height of the LCD panel’s screen in pixels.
The bit assignments for the register are shown in the following register display. The settings for the bits in
the register are listed in Table 8-5.
The bit assignments for the register are shown in the following register display. The settings for the bits in
the register are listed in Table 8-5.
LYMAX
LCD Screen Height Register
0x(FF)FFFA0A
8.3.5
LCD Cursor X Position Register
The LCD cursor X position (LCXP) register is used to determine the horizontal pixel position of the cursor
on the LCD panel. The bit assignments for the register are shown in the following register display. The
settings for the bits in the register are listed in Table 8-6.
on the LCD panel. The bit assignments for the register are shown in the following register display. The
settings for the bits in the register are listed in Table 8-6.
LCXP
LCD Cursor X Position Register
0x(FF)FFFA18
BIT 15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
BIT 0
YM8
YM7
YM6
YM5
YM4
YM3
YM2
YM1
YM0
TYPE
rw
rw
rw
rw
rw
rw
rw
rw
rw
RESET
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
0x01FF
Table 8-5. LCD Screen Height Register Description
Name
Description
Setting
Reserved
Bits 15–9
Bits 15–9
Reserved
These bits are reserved and
should be set to 0.
should be set to 0.
YMx
Bits 8–0
Bits 8–0
Maximum Height 8–0—These bits represent the height of the
LCD panel in the number of pixels, which is equal to YMAX + 1.
LCD panel in the number of pixels, which is equal to YMAX + 1.
See description.
BIT 15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
BIT 0
CC1
CC0
CX
P9
CX
P8
CX
P7
CX
P6
CX
P5
CX
P4
CX
P3
CX
P2
CX
P1
CXP0
TYPE
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
RESET
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0x0000
Table 8-6. LCD Cursor X Position Register Description
Name
Description
Setting
CCx
Bits 15–14
Bits 15–14
Cursor Control 1 and 0—These bits are used to control
the format of the cursor.
the format of the cursor.
00 = Transparent, cursor is disabled.
01 = Full (black) cursor.
10 = Reversed video.
11 = Full (white) cursor.
01 = Full (black) cursor.
10 = Reversed video.
11 = Full (white) cursor.
Reserved
Bits 13–10
Bits 13–10
Reserved
These bits are reserved and should
be set to 0.
be set to 0.