BOCABOARD IOAT41 25-PIN SERIAL & 9-PIN PARALLEL PORT EXPANSION CARD PN9015
BOCA RESEARCH, INC.
IOAT41
Card Type
Multi-I/O card
Chip Set
NS16450 COMPATIBLE
Maximum Onboard Memory
Unidentified
I/O Options
Parallel port, serial port
Data Bus
8-bit ISA
Card Size
Wedge shaped, Half-length
CONNECTIONS
Function
Label
Function
Label
Serial port 2 - internal
CN1
25-pin parallel port - external
CN3
Serial port 1- external
CN2
PARALLEL PORT ADRESS SELECTION
Setting
J4/pins 1 & 2
J4/pins 2 & 3
J4/pins 4 & 5
J4/pins 5 & 6
LPT1 (378h)
Closed
Open
Open
Open
LPT2 (278h)
Open
Closed
Open
Open
LPTINT (IRQ7)
Open
Open
Closed
Open
LPTINT (IRQ5)
Open
Open
Open
Closed
Disabled
Open
Open
Open
Open
SERIAL PORT 1 ADDRESS SELECTION
Setting
J5/pins 2 & 4
J5/pins 4 & 6
J5/pins 8 & 10
J5/pins 10 & 12
COM1
Closed
Open
Open
Open
COM2
Open
Closed
Open
Open
COM3
Open
Open
Closed
Open
COM4
Open
Open
Open
Closed
Disabled
Open
Open
Open
Open
SERIAL PORT 2 ADDRESS SELECTION
Setting
J5/pins 1 & 3
J5/pins 3 & 5
J5/pins 7 & 19
J5/pins 9 & 11
COM1
Closed
Open
Open
Open
COM2
Open
Closed
Open
Open
COM3
Open
Open
Closed
Open
COM4
Open
Open
Open
Closed
Disabled
Open
Open
Open
Open
SERIAL PORT 1 INTERRUPT SELECTION
IRQ
J5/pins 14 & 16
J5/pins 16 & 18
J5/pins 20 & 22
J5/pins 22 & 24
IRQ7
Closed
Open
Open
Open
IRQ5
Open
Closed
Open
Open
IRQ4
Open
Open
Closed
Open
IRQ3
Open
Open
Open
Closed
Disabled
Open
Open
Open
Open
SERIAL PORT 2 INTERRUPT SELECTION
IRQ
J5/pins 13 & 15
J5/pins 15 & 17
J5/pins 19 & 21
J5/pins 21 & 23
IRQ7
Closed
Open
Open
Open
IRQ5
Open
Closed
Open
Open
IRQ4
Open
Open
Closed
Open
IRQ3
Open
Open
Open
Closed
Disabled
Open
Open
Open
Open
