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TURBO PC
PC'S LIMITED, INC.
TURBO PC
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Processor
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8088-2
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Processor Speed
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7.33MHz
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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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PC's Ltd.
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Dimensions
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355mm x 304mm
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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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Speaker
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J2
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Reset switch
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JP1
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Turbo LED & Power LED
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J3
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Alternate DC power plug
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P3
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Note:P3 may not be present on all boards.
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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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Factory configured - do not alter
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J5
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Open
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| »
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CPU speed select fast
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J6
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pins 1 & 2 closed
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CPU speed select slow
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J6
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pins 2 & 3 closed
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| »
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Self-test disabled
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SW2/1
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On
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Self-test enabled
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SW2/1
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Off
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| »
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NPU disabled
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SW2/2
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On
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NPU enabled
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SW2/2
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Off
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| »
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Factory configured - do not alter
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SW2/4
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Off
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Color adjust
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VC1
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Variable
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DRAM CONFIGURATION
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Size
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Bank 0
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Bank 1
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Bank 2
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256KB
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(9) 41256
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NONE
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NONE
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640KB
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(9) 41256
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(9) 41256
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(18) 4164
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DRAM JUMPER CONFIGURATION
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Size
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J4
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256KB
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pins 2 & 3 closed
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640KB
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pins 1 & 2 closed
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DRAM SWITCH CONFIGURATION
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Size
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SW2/3
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SW3/1
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SW3/2
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SW3/3
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SW3/4
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SW3/5
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SW3/6
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SW3/7
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SW3/8
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256KB
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On
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On
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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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On
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Off
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640KB
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Off
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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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On
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Off
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On
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DRAM SWITCH CONFIGURATION (CON’T)
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Size
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SW4/1
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SW4/2
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SW4/3
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SW4/4
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SW4/5
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SW4/6
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SW4/7
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SW4/8
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256KB
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On
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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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On
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Off
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640KB
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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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On
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Off
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On
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FLOPPY DRIVE CONFIGURATION
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Drives installed
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SW2/7
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SW2/8
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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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SW2/5
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SW2/6
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Monochrome
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Off
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Off
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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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