DTK COMPUTER, INC. PEM-2561D (S) Processor 80386DX Processor Speed 25MHz Chip Set DTK/SIS Max. Onboard DRAM 16MB Cache None BIOS DTK Dimensions 330mm x 218mm I/O Options Parallel port, serial ports (2), floppy drive interface, IDE interface NPU Options 80387/3167 [Image] CONNECTIONS Purpose Location Purpose Location Power LED & keylock J1 Floppy drive interface J7 IDE interface LED J2 Serial port 1 J9 Turbo LED J4 Serial port 2 J8 Reset switch J5 Parallel port J10 IDE interface J6 Riser card RC1 USER CONFIGURABLE SETTINGS Function Jumper/Switch Position » CPU speed select fast J3 Open CPU speed select slow J3 pins 1 & 2 closed CPU speed switchable from J3 pins 2 & 3 keyboard closed » Bus speed select fast SW1/7 Off Bus speed select slow SW1/7 On » DRAM page mode/page-interleave SW1/8 On select auto DRAM page mode/page-interleave SW1/8 Off mode select page » Parallel port interrupt select W1 pins 1 & 2 IRQ7 closed Parallel port interrupt select W1 pins 2 & 3 IRQ5 closed » NPU disabled W2 pins 1 & 2 closed NPU enabled W2 pins 2 & 3 closed » Serial port 1 interrupt select W3 pins 2 & 3 IRQ4 closed Serial port 1 interrupt select W3 pins 1 & 2 IRQ3 closed » Serial port 2 interrupt select W4 pins 1 & 2 IRQ3 closed Serial port 2 interrupt select W4 pins 2 & 3 IRQ4 closed » Floppy drive interface enabled W5 Closed Floppy drive interface disabled W5 Open » IDE interface disabled W12 Open IDE interface enabled W12 Closed » Monitor type select monochrome W13 pins 1 & 2 closed Monitor type select color W13 pins 2 & 3 closed DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 1MB (1) 256K x NONE NONE NONE 36 2MB (1) 256K x (1) 256K x NONE NONE 36 36 3MB (1) 256K x (1) 256K x (1) 256K x NONE 36 36 36 4MB (1) 256K x (1) 256K x (1) 256K x (1) 256K x 36 36 36 36 4MB (1) 1M x 36 NONE NONE NONE 5MB (1) 1M x 36 (1) 256K x NONE NONE 36 6MB (1) 256K x (1) 256K x (1) 1M x 36 NONE 36 36 7MB (1) 256K x (1) 256K x (1) 1M x 36 (1) 256K x 36 36 36 8MB (1) 1M x 36 (1) 1M x 36 NONE NONE 9MB (1) 1M x 36 (1) 1M x 36 (1) 256K x NONE 36 10MB (1) 1M x 36 (1) 1M x 36 (1) 256K x (1) 256K x 36 36 12MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 NONE 13MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 256K x 36 16MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 DRAM SWITCH CONFIGURATION Size SW1/1 SW1/2 SW1/3 SW1/4 1MB Off On On On 2MB On Off On On 3MB Off Off On On 4MB On On Off On 4MB Off Off Off Off 5MB Off On Off On 6MB On Off Off On 7MB Off Off Off On 8MB On On On Off 9MB Off On On Off 10MB On Off On Off 12MB On On Off Off 13MB Off On Off Off 16MB On On On On DRAM WAIT STATE CONFIGURATION Wait state Read state SW1/5 SW1/6 1 2 On Off 1 3 Off On 2 3 On On PARALLEL PORT CONFIGURATION Setting W6 W7 LPT1 Closed Closed LPT2 Open Open Disabled Open Closed Disabled Closed Open SERIAL PORT 1 CONFIGURATION Setting W6 W7 COM1 Closed Closed COM3 Open Open Disabled Open Closed Disabled Closed Open SERIAL PORT 2 CONFIGURATION Setting W6 W7 COM2 Closed Closed COM4 Open Open Disabled Open Closed Disabled Closed Open