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1.
th99
UNIDENTIFIED SUPER I/O CARD
Data bus:16-bit, ISA
Size:Half-length, half-height card
Hard drive supported:Two IDE (AT) interface drives
Floppy drives supported:Two 360KB, 720KB, 1.2MB, or 1.44MB drives

CONNECTIONS
FunctionLocation
34-pin control cable connector - floppy driveJ1
40-pin IDE (AT) Interface connectorJ2
Game portJ3
9-pin serial port 1 - externalJ4
10-pin serial port 2 - internalJ6
25-pin parallel portJ7
2-pin connector - drive active LEDJP1
USER CONFIGURABLE SETTINGS
FunctionLocationSetting
»Parallel port is output onlyJP3closed
 Parallel port is input/outputJP3open
SERIAL PORT 1 CONFIGURATION - JP2
COM/AddressJumper AJumper B
»COM1/3F8hpins 2 & 3 closedpins 1 & 2 closed
 COM3/3E8hpins 1 & 2 closedpins 2 & 3 closed
 COM4/2E8hpins 2 & 3 closedpins 2 & 3 closed
 Disabledpins 1 & 2 closedpins 1 & 2 closed
SERIAL PORT 1 INTERRUPT SELECT - J5
IRQJumper AJumper BJumper C
»IRQ4closedopenopen
 IRQ3openclosedopen
 IRQ5openopenclosed
 Disabledopenopenopen
SERIAL PORT 2 CONFIGURATION - JP2
COM/AddressJumper CJumper D
»COM2/2F8hpins 2 & 3 closedpins 1 & 2 closed
 COM3/3E8hpins 2 & 3 closedpins 2 & 3 closed
 COM4/2E8hpins 1 & 2 closedpins 2 & 3 closed
 Disabledpins 1 & 2 closedpins 1 & 2 closed
SERIAL PORT 2 INTERRUPT SELECT - J5
IRQJumper DJumper EJumper F
»IRQ3closedopenopen
 IRQ4openclosedopen
 IRQ5openopenclosed
 Disabledopenopenopen
PARALLEL PORT CONFIGURATION - JP2
LPT/AddressJumper EJumper F
»LPT1/3BChpins 2 & 3 closedpins 2 & 3 closed
 LPT2/378hpins 1 & 2 closedpins 2 & 3 closed
 LPT3/278hpins 2 & 3 closedpins 1 & 2 closed
 Disabledpins 1 & 2 closedpins 1 & 2 closed
PARALLEL PORT INTERRUPT SELECT - J5
IRQJumper GJumper H
»IRQ7closedopen
 IRQ5openclosed
 Disabledopenopen
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timestamp 2026-06-19 19:06:55