DTK COMPUTER, INC. PTM-1261C/1661C Processor 80286 Processor Speed 12/16MHz Chip Set C & T Max. Onboard DRAM 5MB Cache None BIOS DTK Dimensions 333mm x 222mm I/O Options Floppy drive interface, game port, IDE interface, parallel port, PS/2 mouse interface, serial ports (2) NPU Options 80287 [Image] CONNECTIONS Purpose Location Purpose Location Power LED & keylock J1 External battery J9 Turbo LED J2 Serial port 2 J10 Reset switch J3 Serial port 1 J11 Turbo switch J4 Parallel port J12 IDE interface J5 PS/2 mouse interface J13 Floppy drive interface J6 IDE interface LED W12 Game port J7 USER CONFIGURABLE SETTINGS Function Jumper Position » IDE type select new standard W11 pins 2 & 3 closed IDE type select original standard W11 pins 1 & 2 (i.e., CP-342) closed » Floppy drive interface (J6) W14 Closed enabled Floppy drive interface (J6) W14 Open disabled » IDE interface enabled W21 Closed IDE interface disabled W21 Open » Game port enabled W22 Closed Game port disabled W22 Open » Monitor type select monochrome W23 Open Monitor type select color W23 Closed » Battery select internal W24 pins 2 & 3 closed Battery select external W24 pins 1 & 2 closed » Power good signal detect from W25 pins 2 & 3 power supply closed Power good signal detect from W25 pins 1 & 2 board closed DRAM CONFIGURATION Size Bank 0 P-0 Bank 1 P-1 Bank 2 Bank 3 512KB (4) (2) NONE NONE NONE NONE 44256 41256 640KB (4) (2) (2) 64K NONE NONE NONE 44256 41256 x 9 1MB (4) (2) (4) (2) NONE NONE 44256 41256 44256 41256 1.5MB (4) (2) (4) (2) (2) NONE 44256 41256 44256 41256 256K x 9 2MB (4) (2) (4) (2) (2) (2) 44256 41256 44256 41256 256K x 256K x 9 9 2MB NONE NONE NONE NONE (2) 1M NONE x 9 3MB (4) (2) (4) (2) (2) 1M NONE 44256 41256 44256 41256 x 9 4MB NONE NONE NONE NONE (2) 1M (2) 1M x 9 x 9 5MB (4) (2) (4) (2) (2) 1M (2) 1M 44256 41256 44256 41256 x 9 x 9 DRAM JUMPER CONFIGURATION Size W1 W2 W3 W4 W5 W6 512KB 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 640KB 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1MB 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1.5MB 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 2MB 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 2MB 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 3MB 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 4MB 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 5MB 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 Notes:Pins designated should be in the closed position. PARALLEL PORT CONFIGURATION Setting W13 W19 W20 LPT1 pins 1 & 2 Closed Closed closed LPT2 pins 2 & 3 Open Open closed Disabled N/A Open Closed Disabled N/A Closed Open SERIAL PORT 1 CONFIGURATION Setting W13 W15 W16 COM1 pins 1 & 2 Closed Closed closed COM3 pins 2 & 3 Open Open closed Disabled N/A Open Closed Disabled N/A Closed Open SERIAL PORT 2 CONFIGURATION Setting W13 W17 W18 COM2 pins 1 & 2 Closed Closed closed COM4 pins 2 & 3 Open Open closed Disabled N/A Open Closed Disabled N/A Closed Open