Epson 0C88832 Technical Manual page 31

Address Bit Name
00FF55 D7 –
–
D6 –
–
D5 –
–
D4 –
–
D3 –
–
D2 –
–
D1 –
–
D0 K10D
K10 input port data
00FF61 D7 IOC17
P17 I/O control register
D6 IOC16
P16 I/O control register
D5 IOC15
P15 I/O control register
D4 IOC14
P14 I/O control register
D3 IOC13
P13 I/O control register
D2 IOC12
P12 I/O control register
D1 IOC11
P11 I/O control register
D0 IOC10
P10 I/O control register
00FF63 D7 P17D
P17 I/O port data
D6 P16D
P16 I/O port data
D5 P15D
P15 I/O port data
D4 P14D
P14 I/O port data
D3 P13D
P13 I/O port data
D2 P12D P12 I/O port data
D1 P11D P11 I/O port data
D0 P10D P10 I/O port data
00FF70 D7 HZR51 R51 high impedance control
D6 HZR50 R50 high impedance control
D5 HZR4H General-purpose register
D4 HZR4L General-purpose register
D3 HZR1H General-purpose register
D2 HZR1L General-purpose register
D1 HZR0H General-purpose register
D0 HZR0L General-purpose register
00FF71 D7 HZR27 R27 high impedance control
D6 HZR26 R26 high impedance control
D5 HZR25 General-purpose register
D4 HZR24 General-purpose register
D3 HZR23 General-purpose register
D2 HZR22 General-purpose register
D1 HZR21
General-purpose register
D0 HZR20
General-purpose register
00FF72 D7 HZR37
General-purpose register
*1
D6 HZR36
General-purpose register
D5 HZR35
General-purpose register
D4 HZR34
R34 high impedance control
D3 HZR33
General-purpose register
D2 HZR32
General-purpose register
D1 HZR31
General-purpose register
D0 HZR30
General-purpose register
*1 This address is unavailable in the E0C88862.
E0C88832/88862 TECHNICAL MANUAL
5 PERIPHERAL CIRCUITS AND THEIR OPERATION (I/O Memory Map)
Table 5.1.1(h) I/O Memory map (00FF55H–00FF72H)
Function
EPSON
1 0 SR R/W
–
– –
–
– –
_
– –
_
– –
_
– –
_
– –
–
– –
–
High level Low level
0
0
0
0
Output Input
0
0
0
0
1
1
1
1
High Low
1
1
1
1
0
Hi-Z Output
0
0
0
0
1 0
0
0
0
0
Hi-Z Output
0
0
0
0
1 0
0
0
0
0
0
1 0
0
0
Hi-Z Output
0
0
1 0
0
0
Comment
Constantly "0" when
being read
"1" when being read
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reserved register
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reserved register
R/W
R/W
R/W
R/W
R/W
Reserved register
R/W
R/W
R/W
R/W
Reserved register
R/W
R/W
25