DTK COMPUTER, INC.
PTM-1230C
Processor | 80286 |
Processor Speed | 12MHz |
Chip Set | VLSI/VTI |
Max. Onboard DRAM | 1MB |
Cache | None |
BIOS | DTK |
Dimensions | 341.6mm x 204.2mm |
I/O Options | Parallel port, serial ports (2) |
NPU Options | 80287 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Power LED & keylock | J1 | External battery | J12 |
Reset switch | J2 | Serial port (COM2) | CN1 |
Speaker | J3 | Serial port (COM1) | CN2 |
Turbo LED | J4 | Parallel port | CN3 |
Turbo switch | J5 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | DRAM speed select 0 wait states | J6 | Closed |
DRAM speed select 1 wait state | J6 | Open | |
» | Factory configured - do not alter | J7 | Unknown |
» | Factory configured - do not alter | J10 | N/A |
» | Monitor type select color | J11 | Closed |
Monitor type select monochrome | J11 | Open | |
» | BIOS type select 27256 | J22 | Closed |
BIOS type select 27128 | J22 | Open | |
» | CMOS memory normal operation | JP1 | Closed |
CMOS memory clear | JP1 | Open |
DRAM CONFIGURATION | ||
Size | Bank 0 | Bank 1 |
512KB | (18) 41256 | NONE |
640KB | (18) 41256 | (18) 4164 |
1MB | (18) 41256 | (18) 41256 |
DRAM JUMPER CONFIGURATION | ||
Size | J8 | J9 |
512KB | Closed | Closed |
640KB | Closed | Open |
1MB | Open | Closed |
PARALLEL PORT (CN3) CONFIGURATION | |||
Port | J13 | J14 | J19 |
LPT1 | Closed | Closed | pins 1 & 2 closed |
LPT2 | Open | Open | pins 2 & 3 closed |
Disabled | Open | Closed | N/A |
Disabled | Closed | Open | N/A |
SERIAL PORT CONFIGURATION | |||||
Serial Port 1 (CN2) | J15 | J16 | Serial Port 2 (CN1) | J17 | J18 |
COM1 | Closed | Closed | COM2 | Closed | Closed |
COM3 | Open | Open | COM4 | Open | Open |
Disabled | Closed | Open | Disabled | Closed | Open |
Disabled | Open | Closed | Disabled | Open | Closed |