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HCWDWX1
CMS ENHANCEMENTS, INC.
HCWDWX1
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Data bus:
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8-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 MFM ST506/412 drives
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Floppy drives supported:
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None
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CONNECTIONS
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Function
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Location
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34-pin control cable connector - hard drive
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J1
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20-pin data cable connector - drive 0
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J2
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20-pin data cable connector - drive 1
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J3
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External power connector
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J4
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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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Factory configured - do not alter
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J1/A
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N/A
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Factory configured - do not alter
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J1/B
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N/A
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Factory configured - do not alter
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J1/D
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N/A
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Controller supports up to 16 heads
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W6
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pins 1 & 2 closed
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Controller supports up to 8 heads
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W6
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pins 2 & 3 closed
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ADDRESS SELECT
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I/O Address
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Base Memory Address
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W3
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W4
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W8
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320 - 323h
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C8000 - C9FFFh
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closed
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pins 2 & 3
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pins 2 & 3
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324 - 327h
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CA000 - CBFFFh
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closed
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pins 1 & 2
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pins 1 & 2
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N/A
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Disabled
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open
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N/A
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N/A
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Note: All pins designated should be placed in the closed position.
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PRE-SELECTED DRIVE CONFIGURATIONS
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First Drive
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Second Drive
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Capacity
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Heads
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Cylinders
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J1/E
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J1/F
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J1/G
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J1/H
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10MB
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4
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306
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open
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open
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open
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open
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21MB
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4
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612
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closed
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closed
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closed
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closed
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10MB
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2
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612
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open
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closed
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open
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closed
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21MB
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4
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612
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closed
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open
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closed
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open
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INTERRUPT SELECT
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IRQ
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W7
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J1/C
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IRQ5
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pins 1 & 2 closed
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open
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IRQ2
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pins 2 & 3 closed
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closed
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Note: The location of jumper W7 is not identified in manufacturer documentation.
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