DTK COMPUTER, INC.
PTI-255W (VER. 1.01)
Data bus: | 32-bit VL-bus |
Size: | Three-quarter length, half-height card |
Hard drive supported: | Four IDE(AT) drives |
Floppy drives supported: | Two 360KB, 720KB, 1.2MB, or 1.44MB drives |

CONNECTIONS | |
Function | Location |
40-pin primary IDE(AT) connector | J1 |
40-pin secondary IDE(AT) connector | J2 |
34-pin cable connector - floppy drive | J3 |
16-pin game port | J4 |
10-pin serial port 1 - internal, 9-pin serial port 1 - external | J5 |
10-pin serial port 2 - internal | J6 |
25-pin Parallel port | J7 |
2-pin connector - drive active LED | J8 |
DRIVE SPEED CONFIGURATION | |||
Speed | JP1/4 | JP1/5 | |
| » | 600ns | pins 1 & 2 closed | pins 1 & 2 closed |
| 500ns | pins 2 & 3 closed | pins 1 & 2 closed | |
| 400ns | pins 1 & 2 closed | pins 2 & 3 closed | |
| 240ns | pins 2 & 3 closed | pins 2 & 3 closed | |
USER CONFIGURABLE SETTINGS | |||
Function | Location | Setting | |
| » | Secondary IDE(AT) IOCHRDY signal disabled | JP3 | open |
| Secondary IDE(AT) IOCHRDY signal enabled | JP3 | closed | |
| » | Primary IDE(AT) IOCHRDY signal enabled | JP4 | closed |
| Primary IDE(AT) IOCHRDY signal disabled | JP4 | open | |
| » | Parallel port is unidirectional | JP6 | closed |
| Parallel port is bi-directional | JP6 | open | |
| » | Game port enabled | JP8 | closed |
| Game port disabled | JP8 | open | |
| » | IDE(AT) interface enabled | JP1/1 | pins 1 & 2 closed |
| IDE(AT) interface disabled | JP1/1 | pins 2 & 3 closed | |
| » | IDE(AT) address is 170h & 1F0h | JP1/2 | pins 1 & 2 closed |
| IDE(AT) address is 1F0h | JP1/2 | pins 2 & 3 closed | |
| » | CPU speed is 50MHz | JP1/3 | pins 1 & 2 closed |
| CPU speed is 33MHz | JP1/3 | pins 2 & 3 closed | |
| » | Floppy drive order is normal (A:, B:) | JP2/1 | pins 1 & 2 closed |
| Floppy drive order is reversed (B:, A:) | JP2/1 | pins 2 & 3 closed | |
| » | Floppy drive address is 3F0h | JP2/2 | pins 1 & 2 closed |
| Floppy drive address is 370h | JP2/2 | pins 2 & 3 closed | |
| » | Floppy drive interface enabled | JP2/3 | pins 1 & 2 closed |
| Floppy drive interface disabled | JP2/3 | pins 2 & 3 closed | |
SERIAL PORT 1 ADDRESS SELECTION | |||
COM | JP5/1 | JP5/2 | |
| » | COM1 (3F8h) | pins 1 & 2 closed | pins 1 & 2 closed |
COM3 (3E8h) | pins 2 & 3 closed | pins 2 & 3 closed | |
COM4 (2E8h) | pins 1 & 2 closed | pins 2 & 3 closed | |
Disabled | pins 2 & 3 closed | pins 1 & 2 closed | |
SERIAL PORT 2 ADDRESS SELECTION | |||
COM | JP5/3 | JP5/4 | |
| » | COM2 (2F8h) | pins 1 & 2 closed | pins 1 & 2 closed |
COM3 (3E8h) | pins 1 & 2 closed | pins 2 & 3 closed | |
COM4 (2E8h) | pins 2 & 3 closed | pins 2 & 3 closed | |
Disabled | pins 2 & 3 closed | pins 1 & 2 closed | |
PARALLEL PORT ADDRESS SELECTION | |||
LPT | JP5/5 | JP6/6 | |
| » | LPT1 (378h) | pins 1 & 2 closed | pins 1 & 2 closed |
LPT2 (278h) | pins 2 & 3 closed | pins 2 & 3 closed | |
LPT3 (3BCh) | pins 2 & 3 closed | pins 1 & 2 closed | |
Disabled | pins 1 & 2 closed | pins 2 & 3 closed | |
PARALLEL PORT INTERRUPT SELECTION | |||
IRQ | JP7/1 | JP7/1 | |
| » | 7 | closed | open |
| 5 | open | closed | |