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MB108
NORTHGATE COMPUTER SYSTEMS, INC.
MB108
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Data bus:
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16-bit, ISA
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Size:
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Half-length, full-height card
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Hard drive supported:
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Two IDE (AT) Interface 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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34-pin control cable connector - (reserved for future use)
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J1
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34-pin control cable connector - floppy drive
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J2
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4-pin connector - Drive active LED
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J3
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40-pin IDE(AT) Interface connector
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J6
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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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Hard drive Interrupt Request IRQ14 enabled
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W21
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closed
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Hard drive Interrupt Request IRQ14 disabled
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W21
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open
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HARD DRIVE PORT ADDRESS
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Function
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SW1/jumper 1
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SW1/jumper 2
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Hard drive port address is 1F0-1F7h
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closed
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open
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Hard drive port address is 170-177h
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open
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closed
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FLOPPY DRIVE PORT ADDRESS
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Function
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SW1/jumper 1
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SW1/jumper 2
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Floppy drive port address is 3F0-3F7h
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closed
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open
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Floppy drive port address is 370-377h
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open
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closed
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MISCELLANEOUS TECHNICAL NOTES
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Jumpers J4 (Drive-type 300Kb/sec) is factory configured to pins 2 & 3 closed - do not alter
J5 (Pump/Precomp) is factory configured to pins 1 & 2 closed - do not alter.
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