A-1. isa bus pin assignment, Isa1, Isa2 – Curtis AR-B1682 User Manual
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A-1. ISA BUS PIN ASSIGNMENT
ISA1
D18
C18
A1
B1
ISA2
A31
B31
D1
C1
COMPONENT SIDE
There are two edge connectors (called
“gold fingers“) on this CPU Card. On the right hand is the connector of
ISA Bus, beside PCI BUS connector. The ISA-bus connector is divided into two sets: one consists of 62 pins;
the other consists of 36 pins.
The pin assignments are as follows:
B
A
D
C
PIN
ASSIGNMENT
PIN
ASSIGNMENT
PIN
ASSIGNMENT
PIN
ASSIGNMENT
B1
GND
A1
-I/O CH CHK
D1
-MEMCS16
C1
SBHE
B2
RESET
A2
SD07
D2
-I/OCS16
C2
LA23
B3
+5V
A3
SD06
D3
IRQ10
C3
LA22
B4
IRQ9
A4
SD05
D4
IRQ11
C4
LA21
B5
-5V
A5
SD04
D5
IRQ12
C5
LA20
B6
DRQ2
A6
SD03
D6
IRQ15
C6
LA19
B7
-12V
A7
SD02
D7
IRQ14
C7
LA18
B8
OWS
A8
SD01
D8
-DACK0
C8
LA17
B9
+12V
A9
SD00
D9
DRQ0
C9
-MEMR
B10
GND
A10
-I/O CH RDY
D10
-DACK5
C10
-MEMW
B11
-SMEMW
A11
AEN
D11
DRQ5
C11
SD08
B12
-SMEMR
A12
SA19
D12
-DACK6
C12
SD09
B13
-IOW
A13
SA18
D13
DRQ6
C13
SD10
B14
-IOR
A14
SA17
D14
-DACK7
C14
SD11
B15
-DACK3
A15
SA16
D15
DRQ7
C15
SD12
B16
-DRQ3
A16
SA15
D16
+5V
C16
SD13
B17
-DACK1
A17
SA14
D17
-MASTER
C17
SD14
B18
-DRQ1
A18
SA13
D18
GND
C18
SD15
B19
-REFRESH
A19
SA12
B20
BCLK
A20
SA11
B21
IRQ7
A21
SA10
B22
IRQ6
A22
SA09
B23
IRQ5
A23
SA08
B24
IRQ4
A24
SA07
B25
IRQ3
A25
SA06
B26
-DACK2
A26
SA05
B27
T/C
A27
SA04
B28
BALE
A28
SA03
B29
+5V
A29
SA02
B30
OSC
A30
SA01
B31
GND
A31
SA00