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ABC COMPUTER COMPANY, LTD.ABCA3291
Data bus:16-bit, ISA
Size:Half-length, full-height card
Hard drives supported:Two IDE(AT) drives
Floppy drives supported:Two 360KB, 720KB, 1.2MB, or 1.44MB
CONNECTIONS
FunctionLocation
40-pin AT Interface (IDE) connectorCN1
2-pin connector-Drive active LEDCN2
34-pin control cable connector-floppy driveCN3
10-pin serial port (COM2/4) - internalCN4
10-pin serial port (COM1/3) - internalCN5
15-pin game port - externalCN6
25-pin parallel port (LPT1/2) - externalCN7
USER CONFIGURABLE SETTINGS
FunctionLocationSetting
»Floppy drive enabledJP1pins 2 & 3 closed
 Floppy drive disabledJP1pins 1 & 2 closed
»Serial Port 1 (CN5) is set to COM1JP6open
 Serial Port 1 (CN5) is set to COM3JP6closed
»Serial Port 2 (CN4) is set to COM2JP7open
 Serial Port 2 (CN4) is set to COM4JP7closed
»Game Port (CN6) enabledJP8pins 2 & 3 closed
 Game Port (CN6) disabledJP8pins 1 & 2 closed
»Serial Port 2 (CN4) uses IRQ3JP9pins 1 & 2 closed
 Serial Port 2 (CN4) uses IRQ5JP9pins 2 & 3 closed
»Serial Port 1 (CN5) uses IRQ4JP10pins 1 & 2 closed
 Serial Port 1 (CN5) uses IRQ9JP10pins 2 & 3 closed
»Parallel Port (CN7) uses IRQ7JP11pins 2 & 3 closed
 Parallel Port (CN7) uses IRQ5JP11pins 1 & 2 closed
»Hard drive enabledJP12pins 2 & 3 closed
 Hard drive disabledJP12pins 1 & 2 closed
SERIAL PORT CONFIGURATION
Serial Port 1 (CN5)Serial Port 2 (CN4)Jumper JP2Jumper JP3
»EnabledEnabledpins 2 & 3 closedpins 2 & 3 closed
 DisabledEnabledpins 2 & 3 closedpins 1 & 2 closed
 EnabledDisabledpins 1 & 2 closedpins 2 & 3 closed
 DisabledDisabledpins 1 & 2 closedpins 1 & 2 closed
PARALLEL PORT CONFIGURATION
CN7Jumper JP4Jumper JP5
LPT1 enabledpins 2 & 3 closedpins 2 & 3 closed
LPT2 enabledpins 1 & 2 closedpins 2 & 3 closed
Disabledpins 1 & 2 closedpins 1 & 2 closed
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timestamp 2026-06-25 02:36:32