Epson 0C88832 Technical Manual page 32

5 PERIPHERAL CIRCUITS AND THEIR OPERATION (I/O Memory Map)
Address Bit Name
00FF75 D7 R27D
R27 output port data
D6 R26D
R26 output port data
D5 R25D
General-purpose register
D4 R24D
General-purpose register
D3 R23D
General-purpose register
D2 R22D
General-purpose register
D1 R21D
General-purpose register
D0 R20D
General-purpose register
00FF76 D7 R37D
General-purpose register
*2
D6 R36D
General-purpose register
D5 R35D
General-purpose register
D4 R34D
R34 output port data
D3 R33D
General-purpose register
D2 R32D
General-purpose register
D1 R31D
General-purpose register
D0 R30D
General-purpose register
00FF78 D7 –
–
D6 –
–
D5 –
–
D4 –
–
D3 –
–
D2 – –
D1 R51D R51 output port data
D0 R50D R50 output port data
*1 "0" when TOUT output is selected by mask option.
*2 This address is unavailable in the E0C88862.
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Table 5.1.1(i) I/O Memory map (00FF75H–00FF78H)
Function
EPSON
1 0 SR R/W
1
High Low
∗1
1
1
1
1
1 0
1
1
1
1
1
1 0
1
1
High Low
1
1
1 0
1
1
– – –
– – –
– – –
– – –
– – –
– – –
1
High Low
0
E0C88832/88862 TECHNICAL MANUAL
Comment
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
Constantly "0" when
being read
R/W
R/W