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TWINCOM A.2
SIIG, INC.
TWINCOM A.2
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Card Type
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Serial interface
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Chipset Controller
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Unidentified
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I/O Options
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Serial ports (2)
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Maximum Dram
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N/A
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CONNECTIONS
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Purpose
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Location
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Purpose
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Location
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Serial port 1
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J1
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Serial port 2
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J2
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PORT 1 CONFIGURATION
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Port
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jP3
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COM1
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Pins 5 & 9 closed
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COM2
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Pins 6 & 10 closed
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COM3
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Pins 7 & 11 closed
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COM4
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Pins 8 & 12 closed
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Disabled
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Open
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PORT 1 INTERRUPT CONFIGURATION
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IRQ
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jP4
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2
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Pins 1 & 5 closed
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3
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Pins 2 & 6 closed
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4
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Pins 5 & 9 closed
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5
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Pins 6 & 10 closed
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Disabled
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Open
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PORT 2 CONFIGURATION
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Port
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jP3
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COM1
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Pins 1 & 5 closed
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COM2
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Pins 2 & 6 closed
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COM3
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Pins 3 & 7 closed
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COM4
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Pins 4 & 8closed
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Disabled
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Open
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PORT 2 INTERRUPT CONFIGURATION
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IRQ
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jP4
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2
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Pins 3 & 7 closed
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3
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Pins 4 & 8 closed
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4
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Pins 7 & 11 closed
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5
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Pins 8 & 12 closed
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Disabled
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Open
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SECOND SERIAL PORT ACTIVATION
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To activate the second serial port, the following chips must be installed:
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Chip
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Socket
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16450 ASIC
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U1
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1488
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U2
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1489
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U3
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