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3: COMMANDS AND COMMAND REGISTERS
CSRDIR
C
Specifies the direction in which the cursor address counter is automatically shifted. When
horizontal screen movement is specified, the cursor address is shifted –1 or +1 by the
S1D13700 internal arithmetic/logic circuit. When vertical screen movement is specified, the
cursor address is made to jump as many as the number of memory addresses defined by the
address pitch (AP). Therefore, when accessing display memory successively in a given
direction, it is only necessary to set the start address first. Then the cursor address need not be
set by the MPU from the next data on.
<Indirect mode>
MSB
D7
C
0
Because the cursor moves in address units even if FX ≥ 9, the cursor address must be
Note:
preset for movement in character units. (See Section 4.1.4 "Cursor" on page 61.
OVLAY
C
Specifies the method of composing layered screens and text or graphic display mode for each
screen.
<Indirect mode>
MSB
D7
C
0
0
P1
36
D6
D5
D4
D3
1
0
0
1
BIN
HEX
Shift direction
CD1 CD2
4C
0
0
4D
0
1
4E
1
0
4F
1
1
D6
D5
D4
D3
1
0
1
1
0
0
OV
DM2
LSB
D2
D1
D0
1
CD1
CD2
Right
Left
Up
Down
LSB
D2
D1
D0
0
1
1
DM1
MX1
MX0
EPSON
<Direct mode>
Address
Register name
0x8017
r_P1_CsrDir
bit1-0 : CD1-CD2
10
-AP
01
-1
+AP
11
<Direct mode>
Address
Register name
–
0x8018
r_P1_OvLay
bit4 : OV
bit3-2 : DM2-DM1
bit4 : MX1-MX0
S1D13700 Technical Manual
+1
00
–
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