55
8575
8575
A N/B Maintenance
A N/B Maintenance
LH
Key matrix scan output 15
LH
LH
LH
LH
LH
ISA DATA bit 0
Key matrix scan output 14
Key matrix scan output 9
Keep
I/O
I/O
I/O
T
ISA SD0
82
P30/HDB0/D0
Port 3 TTL input voltage (input high min=2V, input low max=0.8V)
Key matrix scan output 8
Keep L
O
O
L
O
L
KB OUT8
67
P20/A8
ISA DATA bit 7
ISA DATA bit 6
ISA DATA bit 5
ISA DATA bit 4
ISA DATA bit 3
ISA DATA bit 2
ISA DATA bit 1
Key matrix scan output 13
Key matrix scan output 12
Key matrix scan output 11
Key matrix scan output 10
Function
Keep
Keep
Keep
Keep
Keep
Keep
Keep
Keep L
Keep L
Keep L
Keep L
Keep L
Keep L
Keep L
STANDBY
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
O
O
O
O
O
O
LH
LH
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
O
O
O
O
O
O
ON
0
0
0
0
0
L
L
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
O
O
O
O
O
O
After
RESET/OFF
T
T
T
T
T
T
T
L
L
L
L
L
L
L
During
RESET
ISA SD7
ISA SD6
ISA SD5
ISA SD4
ISA SD3
ISA SD2
ISA SD1
KB OUT15
KB OUT14
KB OUT13
KB OUT12
KB OUT11
KB OUT10
KB OUT9
H8 Pin
Definitions
89
88
87
86
85
84
83
60
61
62
63
64
65
66
Pin
P37/HDB7/D7
P36/HDB6/D6
P35/HDB5/D5
P34/HDB4/D4
P33/HDB3/D3
P32/HDB2/D2
P31/HDB1/D1
P27/A15
P26/A14
P25/A13
P24/A12
P23/A11
P22/A10
P21/A9
Port 2 TTL input voltage (input high min=2V, input low max=0.8V)
Name
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