UNIDENTIFIED 640K SYSTEM BOARD Processor 8088 Processor Speed 10MHz Chip Set Unidentified Max. Onboard DRAM 640KB Cache None BIOS Unidentified Dimensions 330mm x 218mm I/O Options None NPU Options 8087 [Image] CONNECTIONS Purpose Location Purpose Location Turbo switch JP1 Speaker JP2C Turbo LED JP2A Reset switch JP2D Power LED & keylock JP2B USER CONFIGURABLE SETTINGS Function Switch Position » Factory configured - do not SW1/1 Off alter » NPU disabled SW1/2 On NPU enabled SW1/2 Off » Factory configured - do not SW1/3 Off alter » Factory configured - do not SW1/4 Off alter DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 2A Bank 3 Bank 3A 256KB (9) NONE NONE NONE NONE NONE 41256 512KB (9) (9) NONE NONE NONE NONE 41256 41256 576KB (9) (9) (2) (1) NONE NONE 41256 41256 4464 4164 640KB (9) (9) (2) (1) (2) (1) 4164 41256 41256 4464 4164 4464 DISPLAY ADAPTER SWITCH CONFIGURATION Size SW1/5 SW1/6 None installed On On Color (40 x 20) Off On Color (80 x 25) On Off Monochrome Off Off FLOPPY DRIVE SWITCH CONFIGURATION Drives installed SW1/7 SW1/8 1 On On 2 Off On 3 On Off 4 Off Off