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HED-821A
HEDAKA
HED-821A
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Data Bus
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8/16 bit ISA
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Card Size
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Full height, three-quarters length
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Hard Drives Supported
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Two ST506/412(MFM) devices
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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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Label
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Function
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Label
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20-pin data cable connector - drive 0
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J1
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34-pin control cable connector - hard drive
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U4
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20-pin data cable connector - drive 1
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J2
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34-pin hard drive control cable
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U13
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4-pin drive active LED
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J3
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USER CONFIGURABLE SETTINGS
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Setting
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Label
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Position
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Card uses primary hard drive address
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W2
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Open
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Card uses secondary hard drive address
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W2
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Closed
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Card uses primary floppy address
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W3
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Open
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Card uses secondary floppy address
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W3
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Closed
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FLOPPY CONTROLLER CONFIGURATION
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Setting
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W1
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W4
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Enabled
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Closed
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Closed
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Disabled
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Open
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Open
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