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# DTK COMPUTER, INC.
KEEN-4000, GRAFIKA 3E, PEM 4000
Processor 80386DX
Processor Speed 25/33MHz
Chip Set VLSI
Max. Onboard DRAM 16MB (8MB on external memory card)
Cache None
BIOS AMI
Dimensions 330mm x 218mm
I/O Options 32-bit external memory card slot
NPU Options 80387/3167
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------+----------+----------------------+----------|
| Power LED & | J1 | Speaker | J4 |
| keylock | | | |
|---------------+----------+----------------------+----------|
| Turbo LED | J2 | 32-bit external | S1 |
| | | memory card | |
|---------------+----------+----------------------+----------|
| Reset switch | J3 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|-------------------------------+---------------+------------|
| » | Monitor type select color | SW1/6 | On |
|---+---------------------------+---------------+------------|
| | Monitor type select | SW1/6 | Off |
| | monochrome | | |
|---+---------------------------+---------------+------------|
| » | NPU disabled | W1 | Closed |
|---+---------------------------+---------------+------------|
| | NPU enabled | W1 | Open |
|---+---------------------------+---------------+------------|
| » | CPU speed select | W6 | Pins 2 & 3 |
| | switchable from keyboard | | closed |
|---+---------------------------+---------------+------------|
| | CPU speed select forced | W6 | Pins 1 & 2 |
| | slow | | closed |
|---+---------------------------+---------------+------------|
| | CPU speed select forced | W6 | Open |
| | fast | | |
|---+---------------------------+---------------+------------|
| » | BIOS type select 27256 | W7 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------+---------------+------------|
| | BIOS type select 27512 | W7 | Pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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/SWITCH CONFIGURATION |
|------------------------------------------------------------|
| Size | SW1/1 | SW1/2 | SW1/3 | SW1/4 | SW1/5 | W2 | W3 |
|------+-------+-------+-------+-------+-------+------+------|
| 1MB | On | On | On | On | On | 2 & | 2 & |
| | | | | | | 3 | 3 |
|------+-------+-------+-------+-------+-------+------+------|
| 2MB | On | On | On | On | On | 2 & | 2 & |
| | | | | | | 3 | 3 |
|------+-------+-------+-------+-------+-------+------+------|
| 4MB | On | On | Off | On | Off | 1 & | 1 & |
| | | | | | | 2 | 2 |
|------+-------+-------+-------+-------+-------+------+------|
| 5MB | Off | On | Off | Off | On | 2 & | 1 & |
| | | | | | | 3 | 2 |
|------+-------+-------+-------+-------+-------+------+------|
| 8MB | Off | On | Off | Off | Off | 1 & | 1 & |
| | | | | | | 2 | 2 |
|------------------------------------------------------------|
| Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
+------------------------------------------------------------+