I-38
EPSON
S1C88348/317/316/308 TECHNICAL HARDWARE
5 PERIPHERAL CIRCUITS AND THEIR OPERATION (I/O Memory Map)
Table 5.1.1(j) I/O Memory map (00FF50H–00FF55H)
Address Bit
Name
00FF50 D7
D6
D5
D4
D3
D2
D1
D0
SIK07
SIK06
SIK05
SIK04
SIK03
SIK02
SIK01
SIK00
SR R/W
Function
Comment
K07 interrupt selection register
K06 interrupt selection register
K05 interrupt selection register
K04 interrupt selection register
K03 interrupt selection register
K02 interrupt selection register
K01 interrupt selection register
K00 interrupt selection register
10
0R/W
Interrupt
enable
Interrupt
disable
00FF51 D7
D6
D5
D4
D3
D2
D1
D0
–
SIK11
SIK10
–
K11 interrupt selection register
K10 interrupt selection register
Constantly "0" when
being read
–
0R/W
–
Interrupt
enable
–
Interrupt
disable
*1
00FF53 D7
D6
D5
D4
D3
D2
D1
D0
–
KCP11
KCP10
–
K11 interrupt comparison register
K10 interrupt comparison register
Constantly "0" when
being read
–
1R/W
–
Falling
edge
–
Rising
edge
00FF52 D7
D6
D5
D4
D3
D2
D1
D0
KCP07
KCP06
KCP05
KCP04
KCP03
KCP02
KCP01
KCP00
K07 interrupt comparison register
K06 interrupt comparison register
K05 interrupt comparison register
K04 interrupt comparison register
K03 interrupt comparison register
K02 interrupt comparison register
K01 interrupt comparison register
K00 interrupt comparison register
1R/W
Interrupt
generated
at falling
edge
Interrupt
generated
at rising
edge
00FF54 D7
D6
D5
D4
D3
D2
D1
D0
K07D
K06D
K05D
K04D
K03D
K02D
K01D
K00D
K07 input port data
K06 input port data
K05 input port data
K04 input port data
K03 input port data
K02 input port data
K01 input port data
K00 input port data
–
R
High level
input
Low level
input
00FF55 D7
D6
D5
D4
D3
D2
D1
D0
–
K11D
K10D
–
K11 input port data
K10 input port data
Constantly "0" when
being read
–
_
–
R
–
High level
input
–
Low level
input
*2
*3
*1 Set constantly "0" on S1C88308.
*3 Constantly "1" when being read on S1C88308.
*2 Set constantly "1" on S1C88308.