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