DTK COMPUTER, INC. PPM-1631D(S)/2031D(S)/2531D(S) Processor 80386SX Processor Speed 16/20/25MHz Chip Set DTK Max. Onboard DRAM 5MB Cache None BIOS DTK/AMI Dimensions 330mm x 218mm I/O Options None NPU Options 80387SX [Image] CONNECTIONS Purpose Location Purpose Location Power LED & keylock J2 Turbo LED J5 Turbo switch J3 Reset switch J6 Speaker J4 External battery J7 USER CONFIGURABLE SETTINGS Function Jumper Position » BIOS type select 27256 W7 pins 1 & 2 closed BIOS type select 27128 W7 pins 2 & 3 closed » NPU disabled W8 Closed NPU enabled W8 Open » NPU mode select synchronous with W10 Open CPU NPU mode select asynchronous with W10 Closed CPU » Battery type select internal W11 pins 2 & 3 closed Battery type select external W11 pins 1 & 2 closed » Monitor type select monochrome W12 pins 1 & 2 closed Monitor type select color W12 pins 2 & 3 closed DRAM CONFIGURATION Size Bank 0 P-0 Bank 1 P-1 Bank 2 Bank 3 512KB 1 (4) (2) NONE NONE NONE NONE 44256 4464 640KB 1 (4) (2) (4) (2) NONE NONE 44256 4464 41256 4164 1MB 1 (4) (2) (4) (2) NONE NONE 44256 4464 44256 4464 1.5MB 2 (4) (2) (4) (2) (2) NONE 44256 4464 41256 4164 256K x 9 2MB 2 (4) (2) (4) (2) (2) (2) 256K 44256 4464 44256 4464 256K x x 9 9 2MB 1 NONE NONE NONE NONE (2) 1M NONE x 9 3MB 2 (4) (2) (4) (2) (2) 1M NONE 44256 4464 44256 4464 x 9 4MB 1 NONE NONE NONE NONE (2) 1M (2) 1M x x 9 9 5MB 2 (4) (2) (4) (2) (2) 1M (2) 1M x 44256 4464 44256 4464 x 9 9 DRAM JUMPER CONFIGURATION Size W1 W2 W3 W4 W5 W6 512KB 1 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 640KB 1 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1MB 1 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1.5MB 2 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 2MB 2 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 2MB 1 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 3MB 2 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 4MB 1 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 5MB 2 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 Note:Pins designated should be in the closed position.