RTE-V830-PC
USER’ S MANUAL
19
PD[2]
PD[1]
DRAM capacity
0
0
4 Mbytes
0
1
Reserved
1
0
16 Mbytes
1
1
8 Mbytes
PD[2..1] and DRAM Capacity
Ports 0 to 2: Control ports.....6100080Ch
Ports 0, 1, and 2 belong to the µPD71055. These ports are initialized by writing to the indicated
location.
6.3. OTHER PORTS
Port 3: 7-segment LED display data output port (output).....61000C00h
P17
P16
P15
P14
P13
P12
P11
P10
DPseg
Gseg
Fseg
Eseg
Dseg
Cseg
Bseg
Aseg
Port 4: DIP SW1 state read port (input).....61000C04h
P17
P16
P15
P14
P13
P12
P11
P10
SW1-8
SW1-7
SW1-6
SW1-5
SW1-4
SW1-3
SW1-2
SW1-1
SIZE16B
CMODE
no use
no use
TIM1
TIM0
BPS1
BPS0
SW1-[8..1]:
The states of SW1 mounted on the board can be read-accessed. SW1-1
corresponds to contact 1 of SW1, and SW1-2 corresponds to contact 2 of SW1,
and so on. When a switch is ON, the corresponding bit is 0, and when it is OFF,
the corresponding bit is 1.
BPS1
BPS0
Baud rate
ON
ON
9600 bps
ON
OFF
19200 bps
OFF
ON
38400 bps
OFF
OFF
don’ t use
A
B
C
D
E
F
G
DP
