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ML-863
UNIDENTIFIED
ML-863
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Data bus:
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32-bit VL-bus
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Size:
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Three-quarter length, half-height card
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Hard drive supported:
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Two IDE(AT) drives
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Floppy drives supported:
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Two 360KB, 720KB, 1.2MB, or 1.44MB drives
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CONNECTIONS
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Function
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Location
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25-pin parallel port - external
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CN1
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10-pin serial port 2 - internal
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CN2
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9-pin serial port 1 - external, 10-pin serial port 1 - internal
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CN3
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16-pin game port
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CN4
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34-pin cable connector - floppy drive
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CN5
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40-pin primary IDE(AT) connector
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CN6
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4-pin connector - drive active LED
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CN7
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USER CONFIGURABLE SETTINGS
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Function
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Location
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Setting
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IOCHRDY signal disabled
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JP1
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pins 1 & 2 closed
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IOCHRDY signal enabled
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JP1
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pins 2 & 3 closed
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CPU speed is 40,50 MHz
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JP2
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pins 1 & 2 closed
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CPU speed is <=33MHz
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JP2
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pins 2 & 3 closed
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IDE(AT) interface enabled
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JP3
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pins 1 & 2 closed
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IDE(AT) interface disabled
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JP3
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pins 2 & 3 closed
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Floppy drive interface enabled
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JP4
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pins 1 & 2 closed
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Floppy drive interface disabled
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JP4
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pins 2 & 3 closed
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USER CONFIGURABLE SETTINGS (CONTINUED)
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Function
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Location
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Setting
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Game port enabled
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JP5
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pins 1 & 2 closed
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Game port disabled
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JP5
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pins 2 & 3 closed
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Floppy drive select primary
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JP7
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pins 1 & 2 closed
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Floppy drive select secondary
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JP7
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pins 2 & 3 closed
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PARALLEL PORT ADDRESS SELECTION
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LPT
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JP6
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JP12
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LPT2(378h)
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pins 1 & 2 closed
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pins 1 & 2 closed
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LPT3 (278h)
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pins 2 & 3 closed
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pins 1 & 2 closed
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Disabled
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N/A
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pins 2 & 3 closed
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SERIAL PORT 1 ADDRESS SELECTION
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COM
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JP10
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JP11
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COM1 (3F8h)
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pins 1 & 2 closed
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pins 1 & 2 closed
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COM3 (3E8h)
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pins 2 & 3 closed
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pins 1 & 2 closed
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Disabled
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N/A
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pins 2 & 3 closed
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SERIAL PORT 2 ADDRESS SELECTION
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COM
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JP8
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JP9
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COM2 (2F8h)
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pins 1 & 2 closed
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pins 1 & 2 closed
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COM4 (2E8h)
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pins 2 & 3 closed
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pins 1 & 2 closed
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Disabled
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N/A
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pins 2 & 3 closed
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IDE HARD DISK DRIVE SPEED SELECTION
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Device Speed
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JP13
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JP14
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Low - 600ns
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pins 1 & 2 closed
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pins 1 & 2 closed
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Normal - 500ns
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pins 1 & 2 closed
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pins 2 & 3 closed
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Fast speed - 383ns
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pins 2 & 3 closed
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pins 1 & 2 closed
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Turbo speed - 240ns
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pins 2 & 3 closed
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pins 2 & 3 closed
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MISCELLANEOUS TECHNICAL NOTES
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The location of pin 1 is unidentified on jumpers JP1-JP12.
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