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USER CONFIGURABLE SETTINGS
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Function
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Jumper
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Position
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Parallel port enabled
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SW2 pins 5 & 6
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Open
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Parallel port disabled
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SW2 pins 5 & 6
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Closed
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Parallel port LPT select LPT1
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SW2 pins 7 & 8
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Open
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Parallel port LPT select LPT2
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SW2 pins 7 & 8
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Closed
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Parallel port IRQ select IRQ7
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SW3
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pins 7 & 8 closed
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Parallel port IRQ select IRQ5
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SW3
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pins 5 & 6 closed
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8-bit memory I/O wait state select 4 wait states
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W1
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pins 1 & 2 closed
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8-bit memory I/O wait state select 5 wait states
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W1
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pins 2 & 3 closed
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16-bit memory I/O wait state select 1 wait states
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W2
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pins 1 & 2 closed
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16-bit memory I/O wait state select 2 wait states
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W2
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pins 2 & 3 closed
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CPU speed control 8MHz
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W3
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pins 1 & 2 closed
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CPU speed control keyboard control
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W3
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pins 2 & 3 closed
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CPU speed control 20MHz
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W3
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Open
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Monitor type select monochrome
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W4
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pins 1 & 2 closed
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Monitor type select color
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W4
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pins 2 & 3 closed
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NPU disabled
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W5
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pins 1 & 2 closed
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NPU enabled
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W5
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pins 2 & 3 closed
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BIOS type select 27128
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W6
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pins 1 & 2 closed
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BIOS type select 27256
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W6
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pins 2 & 3 closed
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Note: The location of W6 is unidentified.
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