DTK COMPUTER, INC. PEM-2501/PEM-4001 Processor 80386DX Processor Speed 25/33/40MHz Chip Set VLSI Max. Onboard DRAM 16MB (8MB on external memory card) Cache 64/256KB BIOS AMI/DTK Dimensions 351mm x 306mm I/O Options 32-bit external memory card slot (PEI-306) NPU Options 80387/3167 [Image] CONNECTIONS Purpose Location Purpose Location Power LED & keylock J1 Speaker J4 Turbo LED J2 32-bit external S1 memory card Reset switch J3 Turbo switch W6 USER CONFIGURABLE SETTINGS Function Jumper/Switch Position » NPU disabled W1 Closed NPU enabled W1 Open » CPU speed select fast W6 Open CPU speed select slow W6 pins 1 & 2 closed CPU speed switchable from W6 pins 2 & 3 keyboard closed » BIOS type select 27256 W7 pins 1 & 2 closed BIOS type select 27512 W7 pins 2 & 3 closed » DMA speed select 8MHz W8 Closed DMA speed select 6MHz W8 Open » Monitor type select SW1/6 Off monochrome Monitor type select color SW1/6 On DRAM CONFIGURATION Size Bank 0 Bank 1 1MB (4) 256K x 9 NONE 2MB (4) 256K x 9 (4) 256K x 9 4MB (4) 1M x 9 NONE 5MB (4) 256K x 9 (4) 1M x 9 8MB (4) 1M x 9 (4) 1M x 9 DRAM JUMPER CONFIGURATION Size SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 W2 W3 1MB On On On On On pins 2 & pins 2 & 3 closed 3 closed 2MB On On On On On pins 2 & pins 2 & 3 closed 3 closed 4MB On On Off On Off pins 1 & pins 1 & 2 closed 2 closed 5MB Off On Off Off On pins 2 & pins 1 & 3 closed 2 closed 8MB Off On Off Off Off pins 1 & pins 1 & 2 closed 2 closed 12MB Off Off On N/A N/A N/A N/A 16MB Off Off Off N/A N/A N/A N/A CACHE CONFIGURATION Size Bank 0 Tag 64KB (8) 16K x 4 (2) 16K x 4 256KB (8) 64K x 4 (2) 64K x 4 CACHE JUMPER CONFIGURATION Size W4 W5 64KB pins 1 & 2 closed pins 1 & 2 closed 256KB pins 2 & 3 closed pins 2 & 3 closed