UNIDENTIFIED
NT-386/CT
Processor | 80386DX |
Processor Speed | 16/20/25/33MHZ |
Chip Set | C & T Peak/DM |
Max. onboard DRAM | 32MB |
Cache | 32/64/128/256KB |
BIOS | Unknown |
Dimensions | 330mm x 218mm |
I/O Options | 32-bit external memory card |
NPU Options | 80387DX/3167 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | JP5 | Turbo switch | JP28 |
Power LED & keylock | JP21 | Reset switch | JP29 |
Speaker | JP24 | 32-bit external memory card | S1 |
Turbo LED | JP25 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper/Switch | Position | |
» | Monitor type select color | JP3 | Closed |
Monitor type select monochrome | JP3 | Open | |
» | NPU synchronous with CPU | JP26 | Open |
NPU asynchronous | JP26 | Closed | |
» | Power good signal detect from board | JP27 | pins 2 & 3 closed |
Power good signal detect from power supply | JP27 | pins 1 & 2 closed | |
» | CMOS memory normal operation | JP30 | pins 2 & 3 closed |
CMOS memory clear | JP30 | pins 1 & 2 closed |
DRAM CONFIGURATION | |||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | JP1 |
1MB | (4) 256K x 9 | NONE | NONE | NONE | pins 1 & 2 |
2MB | (4) 256K x 9 | (4) 256K x 9 | NONE | NONE | pins 1 & 2 |
3MB | (4) 256K x 9 | (4) 256K x 9 | (4) 256K x 9 | NONE | pins 1 & 2 |
4MB | (4) 256K x 9 | (4) 256K x 9 | (4) 256K x 9 | (4) 256K x 9 | pins 1 & 2 |
4MB | (4) 1M x 9 | NONE | NONE | NONE | pins 1 & 2 |
5MB | (4) 256K x 9 | (4) 1M x 9 | NONE | NONE | pins 2 & 3 |
6MB | (4) 256K x 9 | (4) 256K x 9 | (4) 1M x 9 | NONE | pins 2 & 3 |
8MB | (4) 1M x 9 | (4) 1M x 9 | NONE | NONE | pins 1 & 2 |
10MB | (4) 256K x 9 | (4) 256K x 9 | (4) 1M x 9 | (4) 1M x 9 | pins 2 & 3 |
12MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | NONE | pins 1 & 2 |
16MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | pins 1 & 2 |
16MB | (4) 4M x 9 | NONE | NONE | NONE | pins 1 & 2 |
17MB | (4) 256K x 9 | (4) 4M x 9 | NONE | NONE | pins 2 & 3 |
18MB | (4) 256K x 9 | (4) 256K x 9 | (4) 4M x 9 | NONE | pins 2 & 3 |
20MB | (4) 1M x 9 | (4) 4M x 9 | NONE | NONE | pins 2 & 3 |
24MB | (4) 1M x 9 | (4) 1M x 9 | (4) 4M x 9 | NONE | pins 2 & 3 |
32MB | (4) 4M x 9 | (4) 4M x 9 | NONE | NONE | pins 1 & 2 |
33MB | (4) 4M x 9 | (4) 4M x 9 | (4) 256K x 9 | NONE | pins 2 & 3 |
34MB | (4) 4M x 9 | (4) 4M x 9 | (4) 256K x 9 | (4) 256K x 9 | pins 2 & 3 |
36MB | (4) 4M x 9 | (4) 4M x 9 | (4) 1M x 9 | NONE | pins 2 & 3 |
40MB | (4) 1M x 9 | (4) 1M x 9 | (4) 4M x 9 | (4) 4M x 9 | pins 2 & 3 |
48MB | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 9 | NONE | pins 1 & 2 |
64MB | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 9 | pins 1 & 2 |
Note:Banks 2 & 3 are located on an optional 32-bit external memory card. Pins designated should be in the closed position. |
CACHE CONFIGURATION | |||
Size | Bank 0 | Bank 1 | TAG |
32KB | (4) 8K x 8 | NONE | (2) 16K x 4 |
64KB | (4) 8K x 8 | (4) 8K x 8 | (2) 16K x 4 |
128KB | (4) 32K x 8 | NONE | (2) 64K x 4 |
256KB | (4) 32K x 8 | (4) 32K x 8 | (2) 64K x 4 |
CACHE JUMPER CONFIGURATION | ||||
Size | JP6 | JP7 | JP8 | JP9 |
32KB | Open | Closed | Closed | Closed |
64KB | Open | pins 2 & 3 closed | pins 2 & 3 closed | pins 1 & 2 closed |
128KB | Closed | pins 1 & 2 closed | pins 1 & 2 closed | pins 2 & 3 closed |
256KB | Closed | pins 1 & 2 closed | pins 1 & 2 closed | pins 1 & 2 closed |
CACHE JUMPER CONFIGURATION | ||||||||||
Size | JP11 | JP12 | JP13 | JP14 | JP15 | JP16 | JP17 | JP18 | JP19 | JP20 |
32KB | Open | Open | Closed | Open | Closed | Open | 2 & 3 | Open | 2 & 3 | Open |
64KB | Open | Open | Closed | Closed | Closed | Open | 2 & 3 | Open | Open | Closed |
128KB | Open | Closed | Open | Closed | Closed | Open | 1 & 2 | 1 & 2 | Open | Closed |
256KB | Closed | Closed | Open | Closed | Open | Closed | 1 & 2 | 1 & 2 | 1 & 2 | Closed |