Panasonic JS-170FR Series Service Manual page 34

Front counter register
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Pin No.
Signal name
U 14
DACK0#
W 06
DACK1#
Y 10
DACK2#
V 05
DACK3#
T 15
DACK5#
V 16
DACK6#
W 17
DACK7#
W 15
DRQ0
U 06
DRQ1
V 02
DRQ2
U 05
DRQ3
Y 16
DRQ5
U 16
DRQ6
U 17
DRQ7
V 20
EXTSMI#
E 06
FRAME#
K 19
FERR#
N 01
GNTA#
P 02
GNTB#
P 04
GNTC#
P 19
GPI1
L 02
GPI13
J 03
GPI14
L 05
GPI15
K 03
GPI16
K 04
GPI17
H 01
GPI18
H 04
GPI19
H 05
GPI20
G 03
GPI21
G 04
GP00
T 19
GP08
G 05
GP027
F 02
GP028
F 03
GP029/IRQ9_0
F 04
GP030
A 03
IDSEL
L 19
INTR
L 17
IGNNE#
L 18
INIT
V 12
IOCS16#
Y 01
IOCHK#/GPI0
T 03
IOCHRDY
T 04
IOW#
Y 05
IOR#
B 05
IRDY#
IN/OUT
OUT
ACK signal to DRQ.
IN
DMA transfer request signal.
IN/OUT
External system management interrupt.
IN/OUT
PCI bus The signal to indicate that the bus cycle is currently executed. Active : Low
IN
Floating decimal point error signal.
OUT
PCI bus DMA enable signal.
IN
Used as a general-purpose input port.
OUT
Used as a general-purpose input port.
IN
PCI The signal used to specify the target device.
OUT
Interrupt request signal. IRQ0-IRQ15 (→CPU)
OUT
Output to disregard the floating decimal point error. (→CPU)
OUT
The initialize request signal to the CPU. (→CPU)
ISA Used to specify the data bus width of I/O. Low → 16-bit, High → 8-bit.
IN
IN
ISA The signal to indicate that a correction impossible error has occurred. (→NMI)
IN
ISA Used when the bus cycle is extended. (Wait signal)
IN/OUT
ISA Write signal to the I/O device.
IN/OUT
ISA Read signal to the I/O device.
IN/OUT
PCI The signal to indicate that the initiator is enabled to transfer data.
2-4
Functions
Active : Low
Active : High
Active : Low
Active : Low
Active : High
Active : High
Active : Low
Active : Low
Active : Low
Active : Low

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