SINGA 286/12 Processor 80286 Processor Speed 12/16/20MHz Chip Set C & T Max. Onboard DRAM 1MB Cache None BIOS Phoenix Dimensions 330mm x 218mm I/O Options None NPU Options 80287 [Image] CONNECTIONS Purpose Location Purpose Location Turbo switch J1 Power LED & keylock J6 External battery J3 Reset switch J15 Speaker J5 Turbo LED J16 USER CONFIGURABLE SETTINGS Function Jumper/Switch Position » CPU speed select 12MHz J1 pins 1 & 2 closed CPU speed select 8MHz J1 pins 2 & 3 closed » CPU Speed select switchable J2 pins 1 & 2 at turbo switch closed CPU Speed select switchable J2 pins 2 & 3 at keyboard closed » DMA clock speed select J4 pins 2 & 3 iOSC/2 closed DMA clock speed select J4 pins 1 & 2 iOSC/1 closed » DRAM access speed select J10 pins 1 & 2 8MHz closed DRAM access speed select J10 pins 2 & 3 12MHz closed » BIOS access speed select J11 pins 2 & 3 8MHz closed BIOS access speed select J11 pins 1 & 2 12MHz closed » DMA clock slow down enabled J12 pins 1 & 2 closed DMA clock slow down disabled J12 pins 2 & 3 closed » Keyboard controller speed J13 pins 1 & 2 select 8MHz closed Keyboard controller speed J13 pins 2 & 3 select 4MHz closed » NPU speed select 8MHz J14 pins 2 & 3 closed NPU speed select 4.77MHz J14 pins 1 & 2 closed » Battery type select internal J17 Closed Battery type select external J17 Open » Battery charge mode select J18 Open normal Battery charge mode select J18 Closed fast » Monitor type select color S1/3 On Monitor type select S1/3 Off monochrome DRAM CONFIGURATION Size Bank 0 Bank 1 256KB (18) 4164 (18) 4164 512KB (18) 41256 NONE 640KB (18) 41256 (18) 4164 1MB (18) 41256 (18) 41256 DRAM SWITCH CONFIGURATION Size S1/1 S1/2 S1/4 256KB On On Off 512KB Off On Off 640KB On Off Off 1MB (512KB base) Off Off Off 1MB (640KB base) Off Off On