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HED-918
HEDAKA
HED-918
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Processor
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8088/V20
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Processor Speed
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4.77/10MHz
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Chip Set
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None
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Max. Onboard DRAM
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640KB
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Cache
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None
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BIOS
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AMI
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Dimensions
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217mm x 166mm
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I/O Options
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None
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NPU Options
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8087
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CONNECTIONS
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Purpose
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Location
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Purpose
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Location
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Power LED
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CN2
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Turbo LED
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CN6
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Speaker
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CN3
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External battery
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CN7A
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Reset switch
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CN4
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Keylock
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CN8
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Turbo switch
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CN5
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USER CONFIGURABLE SETTINGS
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Function
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Jumper/Switch
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Position
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| »
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CPU type select Intel 8088
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JP2
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pins 1 & 2 closed
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CPU type select NEC V-20
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JP2
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pins 2 & 3 closed
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| »
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Factory configured - do not alter
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SW1/1
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Off
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| »
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NPU disabled
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SW1/2
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On
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NPU enabled
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SW1/2
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Off
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DRAM CONFIGURATION
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Size
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44256 Chips
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411000 Chips
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0KB
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NONE
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NONE
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128KB
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U7
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NONE
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256KB
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U6 & U7
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NONE
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384KB
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U5, U6 & U7
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NONE
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512KB
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U4, U5, U6 & U7
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NONE
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512KB
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NONE
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U4, U5, U6 & U7
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640KB
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U3, U4, U5, U6 & U7
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NONE
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640KB
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U3
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U4, U5, U6 & U7
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DRAM JUMPER/SWITCH CONFIGURATION
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Size
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JP1
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SW1/3
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SW1/4
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0KB
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pins 1 & 2 closed
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On
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On
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128KB
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pins 1 & 2 closed
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Off
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On
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256KB
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pins 1 & 2 closed
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Off
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On
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384KB
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pins 1 & 2 closed
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Off
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On
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512KB
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pins 1 & 2 closed
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Off
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On
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512KB
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pins 2 & 3 closed
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Off
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On
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640KB
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pins 1 & 2 closed
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On
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Off
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640KB
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pins 2 & 3 closed
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On
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Off
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FLOPPY DRIVE CONFIGURATION
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Drives installed
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SW1/7
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SW1/8
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1
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On
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On
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2
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Off
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On
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3
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On
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Off
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4
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Off
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Off
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MONITOR CONFIGURATION
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Type
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SW1/3
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SW1/4
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None
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On
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On
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40 x 25 color
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Off
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On
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80 x 25 color
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On
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Off
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Monochrome
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Off
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Off
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