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286A
UNIDENTIFIED
286A
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Processor
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80286
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Processor Speed
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12/16MHz
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Chip Set
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C & T
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Max. Onboard DRAM
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5MB
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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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310mm x 218mm
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I/O Options
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Floppy drive interface, game port, IDE interface, parallel port, serial ports (2)
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NPU Options
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80287
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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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Serial port 2
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J3
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Reset switch
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J11
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Serial port 1
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J4
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Speaker
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J12
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Game port
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J5
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Power LED & keylock
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J13
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Parallel port
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J7
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IDE interface
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JP9
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Floppy drive interface
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J8
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Turbo switch
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JP23
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Turbo LED
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J10
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IDE interface LED
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JP28
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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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Monitor type select monochrome
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JP2
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pins 1 & 2 closed
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Monitor type select color
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JP2
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pins 2 & 3 closed
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Floppy drive interface enabled
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JP4
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pins 1 & 2 closed
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Floppy drive interface disabled
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JP4
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pins 2 & 3 closed
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CPU low speed CLK select 1/2 ATCLK
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JP22
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Closed
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CPU low speed CLK select 1/4 CLK2N
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JP22
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Open
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DRAM CONFIGURATION
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Size
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Bank 0
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P 0
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Bank 1
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P 1
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Bank 2
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Bank 3
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512KB
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(4) 44256
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(2) 41256
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NONE
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NONE
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NONE
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NONE
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640KB
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(4) 44256
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(2) 41256
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(4) 4464
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(2) 4164
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NONE
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NONE
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1MB
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(4) 44256
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(2) 41256
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(4) 44256
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(2) 41256
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NONE
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NONE
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2MB
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(4) 44256
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(2) 41256
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(4) 44256
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(2) 41256
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(2) 256K x 9
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(2) 256K x 9
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2MB
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NONE
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NONE
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NONE
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NONE
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(2) 1M x 9
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NONE
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3MB
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(4) 44256
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(2) 41256
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(4) 44256
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(2) 41256
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(2) 1M x 9
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NONE
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4MB
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NONE
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NONE
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NONE
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NONE
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(2) 1M x 9
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(2) 1M x 9
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5MB
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(4) 44256
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(2) 41256
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(4) 44256
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(2) 41256
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(2) 1M x 9
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(2) 1M x 9
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DRAM CONFIGURATION
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Setting
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JP10
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JP11
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JP12
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JP13
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JP14
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JP15
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SIMM set as Bank 0 & 1
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1 & 2
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1 & 2
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1 & 2
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1 & 2
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1 & 2
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1 & 2
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SIMM set as Bank 2 & 3
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2 & 3
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2 & 3
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2 & 3
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2 & 3
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2 & 3
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2 & 3
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Note: Pins designated should be in the closed position.
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IDE CONFIGURATION
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Setting
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JP16
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JP17
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Enabled
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Closed
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Closed
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Disabled
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Open
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Open
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PARALLEL PORT CONFIGURATION
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LPT
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JP8
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JP9
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LPT1
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pins 1 & 2 closed
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pins 2 & 3 closed
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LPT2
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pins 1 & 2 closed
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pins 1 & 2 closed
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LPT3
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pins 2 & 3 closed
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pins 1 & 2 closed
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Disabled
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pins 2 & 3 closed
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pins 2 & 3 closed
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SERIAL PORT CONFIGURATION
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Serial port 1
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Serial port 2
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JP5
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JP6
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JP7
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COM1
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COM2
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pins 1 & 2 closed
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pins 1 & 2 closed
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pins 1 & 2 closed
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COM1
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Disabled
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pins 1 & 2 closed
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pins 2 & 3 closed
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pins 1 & 2 closed
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COM2
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COM1
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pins 2 & 3 closed
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pins 1 & 2 closed
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pins 1 & 2 closed
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Disabled
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COM1
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pins 2 & 3 closed
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pins 1 & 2 closed
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pins 2 & 3 closed
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Disabled
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COM2
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pins 1 & 2 closed
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pins 1 & 2 closed
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pins 2 & 3 closed
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COM2
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Disabled
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pins 2 & 3 closed
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pins 2 & 3 closed
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pins 1 & 2 closed
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Disabled
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Disabled
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pins 1 & 2 closed
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pins 2 & 3 closed
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pins 2 & 3 closed
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