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HBA-SA0
CMS ENHANCEMENTS, INC.
HBA-SA0
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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, half length
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Hard Drives Supported
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Up to 7 SCSI devices
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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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Label
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Function
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Label
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50-pin SCSI connector - internal
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J1
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1.5A fuse
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F1
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50-pin SCSI connector - external
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J2
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4-pin drive active LED
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LED3
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3-pin DC power out
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J6
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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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TERMPWR enabled
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W1
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Pins 1 & 2 closed
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TERMPWR disabled
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W1
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Pins 2 & 3 closed
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Card uses 8-bit transfers
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W5
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Pins 1 & 2 closed
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Card uses 16-bit transfers
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W5
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Pins 2 & 3 closed
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SOFTWARE SUPPORTED CONFIGURATIONS
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BIOS Address
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IRQ
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DMA
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C000h
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10
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6
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C800h
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11
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6
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D000h
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12
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7
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D800h
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10
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5
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Note:IRQ and DMA are BIOS address dependent and must be set in these combinations.
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BIOS ADDRESS SELECTION
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Setting
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S3/7
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S3/8
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C000h
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On
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On
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C800h
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Off
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On
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D000h
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On
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Off
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D800h
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Off
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Off
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DMA CHANNEL SELECTION
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Setting
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W2/A
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W2/B
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W2/C
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W4/A
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W4/B
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W4/C
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DMA5
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Open
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Open
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Closed
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Open
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Open
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Closed
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DMA6
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Open
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Closed
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Open
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Open
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Closed
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Open
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DMA7
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Closed
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Open
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Open
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Closed
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Open
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Open
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INTERRUPT SELECTION
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Setting
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W3/A
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W3/B
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W3/C
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IRQ10
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Open
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Open
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Closed
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IRQ11
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Open
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Closed
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Open
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IRQ12
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Closed
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Open
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Open
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DMA TRANSFER RATE
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Transfer
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DRAM
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S3/1
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S3/2
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S3/3
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S3/4
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S3/5
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S3/6
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3.33MBps
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200-250nS
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Off
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On
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Off
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On
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Off
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Off
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4.55MBps
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150-200nS
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Off
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Off
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On
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On
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On
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Off
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5.56MBps
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120-150nS
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On
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Off
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On
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Off
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Off
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On
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7.14MBps
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80-120nS
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Off
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On
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On
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On
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Off
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On
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10MBps
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40-80nS
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On
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On
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On
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Off
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On
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On
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12.5MBps
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<40nS
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On
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On
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On
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On
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On
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On
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SCSI TERMINATION
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Setting
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R1
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R2
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R3
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Terminated
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Installed
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Installed
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Installed
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Not terminated
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Not installed
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Not installed
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Not installed
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