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DESKTOP PC
CORONA COMPTER CORPORATION
DESKTOP PC
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Processor
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8088
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Processor Speed
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Unidentified
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Chip Set
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Unidentified
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Video Chip Set
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Unidentified
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Maximum Onboard Memory
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512KB
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Maximum Video Memory
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Unidentified
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Cache
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None
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BIOS
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Unidentified
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Dimensions
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355mm x 304mm
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I/O Options
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Floppy drive interface, parallel port, serial ports (3), light pen connector, VGA port
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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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P2
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VGA port
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J7
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Light pen connector
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P3
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Serial port
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J8
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Floppy drive interface
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P4
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Parallel port
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J9
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Serial port
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J5
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Reset switch
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S2
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Serial port
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J6
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USER CONFIGURABLE SETTINGS
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Function
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Label
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Position
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BIOS type select 8KB
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JP1
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Closed
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BIOS type select 16KB
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JP1
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Open
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Graphics memory located in second 256KB
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JP2
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Pins 1 & 3 closed
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Graphics memory located in first 256KB
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JP2
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Pins 2 & 4 closed
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Keyboard voltage select 12v
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JP3
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Pins 1 & 2 closed
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Keyboard voltage select 5v
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JP3
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Pins 2 & 3 closed
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NPU not installed
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S1/1
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On
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NPU installed
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S1/1
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Off
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Floppy drives installed 1
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S1/2
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On
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Floppy drives installed 2
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S1/2
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Off
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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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Bank 3
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128KB
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(16) 4164
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None
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None
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None
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256KB
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(16) 4164
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(16) 4164
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None
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None
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384KB
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(16) 4164
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(16) 4164
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(16) 4164
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None
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512KB
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(16) 4164
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(16) 4164
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(16) 4164
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(16) 4164
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Note: The location of banks 0, 1, 2 & 3 are unidentified.
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DRAM SWITCH CONFIGURATION
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Size
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S1/5
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S1/6
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128KB
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On
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On
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256KB
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Off
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On
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384KB
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Off
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Off
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512KB
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Off
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Off
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MONITOR SELECTION
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Setting
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S1/3
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S1/4
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None
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On
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On
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Color (40 x 25)
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Off
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On
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Color (80 x 25)
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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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