DTK COMPUTER, INC.
PEM-2501/PEM-4001
Processor |
80386DX |
Processor Speed |
25/33/40MHz |
Chip Set |
VLSI |
Max. Onboard DRAM |
16MB (8MB on external memory card) |
Cache |
64/256KB |
BIOS |
AMI/DTK |
Dimensions |
351mm x 306mm |
I/O Options |
32-bit external memory card slot (PEI-306) |
NPU Options |
80387/3167 |
CONNECTIONS | |||
Purpose |
Location |
Purpose |
Location |
Power LED & keylock |
J1 |
Speaker |
J4 |
Turbo LED |
J2 |
32-bit external memory card |
S1 |
Reset switch |
J3 |
Turbo switch |
W6 |
USER CONFIGURABLE SETTINGS | |||
Function |
Jumper/Switch |
Position | |
» |
NPU disabled |
W1 |
Closed |
NPU enabled |
W1 |
Open | |
» |
CPU speed select fast |
W6 |
Open |
CPU speed select slow |
W6 |
pins 1 & 2 closed | |
CPU speed switchable from keyboard |
W6 |
pins 2 & 3 closed | |
» |
BIOS type select 27256 |
W7 |
pins 1 & 2 closed |
BIOS type select 27512 |
W7 |
pins 2 & 3 closed | |
» |
DMA speed select 8MHz |
W8 |
Closed |
DMA speed select 6MHz |
W8 |
Open | |
» |
Monitor type select monochrome |
SW1/6 |
Off |
Monitor type select color |
SW1/6 |
On |
DRAM CONFIGURATION | ||
Size |
Bank 0 |
Bank 1 |
1MB |
(4) 256K x 9 |
NONE |
2MB |
(4) 256K x 9 |
(4) 256K x 9 |
4MB |
(4) 1M x 9 |
NONE |
5MB |
(4) 256K x 9 |
(4) 1M x 9 |
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
DRAM JUMPER CONFIGURATION | |||||||
Size |
SW1/1 |
SW1/2 |
SW1/3 |
SW1/4 |
SW1/5 |
W2 |
W3 |
1MB |
On |
On |
On |
On |
On |
pins 2 & 3 closed |
pins 2 & 3 closed |
2MB |
On |
On |
On |
On |
On |
pins 2 & 3 closed |
pins 2 & 3 closed |
4MB |
On |
On |
Off |
On |
Off |
pins 1 & 2 closed |
pins 1 & 2 closed |
5MB |
Off |
On |
Off |
Off |
On |
pins 2 & 3 closed |
pins 1 & 2 closed |
8MB |
Off |
On |
Off |
Off |
Off |
pins 1 & 2 closed |
pins 1 & 2 closed |
12MB |
Off |
Off |
On |
N/A |
N/A |
N/A |
N/A |
16MB |
Off |
Off |
Off |
N/A |
N/A |
N/A |
N/A |
CACHE CONFIGURATION | ||
Size |
Bank 0 |
Tag |
64KB |
(8) 16K x 4 |
(2) 16K x 4 |
256KB |
(8) 64K x 4 |
(2) 64K x 4 |
CACHE JUMPER CONFIGURATION | ||
Size |
W4 |
W5 |
64KB |
pins 1 & 2 closed |
pins 1 & 2 closed |
256KB |
pins 2 & 3 closed |
pins 2 & 3 closed |