UNIDENTIFIED HT12HS Processor 80286 Processor Speed 12/16/20MHz Chip Set VLSI Max. Onboard DRAM 4MB Cache None BIOS AMI/Eurosoft/Quadtel Dimensions 220mm x 220mm I/O Options None NPU Options 80287 [Image] CONNECTIONS Purpose Location Purpose Location Auxiliary keyboard JP1 Turbo switch JP10 connector External battery JP2 Reset switch JP11 Speaker JP8 Power LED & keylock JP12 Turbo LED JP9 USER CONFIGURABLE SETTINGS Function Jumper Position Monitor type select color JP3 Closed Monitor type select monochrome JP3 Open CMOS memory normal operation JP4 Closed CMOS memory clear JP4 Open BIOS type select 27256 JP5 pins 2 & 3 closed BIOS type select 27128 JP5 pins 1 & 2 closed NPU speed select 4.77MHz JP6 pins 1 & 2 closed NPU speed select 10.6MHz JP6 pins 2 & 3 closed DRAM CONFIGURATION Size Bank 0 P 0 Bank 1 P 1 Bank Bank 1A 0A 512KB (4) (2) NONE NONE NONE NONE 44256 41256 640KB (4) (2) (4) 4464 (2) 4164 NONE NONE 44256 41256 1MB (4) (2) (4) (2) NONE NONE 44256 41256 44256 41256 2MB NONE NONE NONE NONE (2) NONE 1M x 9 4MB (4) (2) (4) (2) NONE NONE 441000 411000 441000 411000 4MB NONE NONE NONE NONE (2) (2) 1M 1M x x 9 9 CPU SPEED CONFIGURATION System clock Bus clock DRAM speed JP7 12MHz 8MHz asynch 100ns Open 12MHz 6MHz synch 100ns Closed 16MHz 8MHz synch 80ns Closed 20MHz 8MHz asynch 60/70ns Open 20MHz 10MHz synch 60/70ns Closed MISCELLANEOUS TECHNICAL NOTE Note: The location of pin 1 is unidentified.