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# DTK COMPUTER, INC.
GRAFIKA 4A
Processor 80486SX
Processor Speed 33MHz
Chip Set VLSI
Max. Onboard DRAM 16MB (8MB on external memory card)
Cache 64/256KB
BIOS DTK
Dimensions 355mm x 305mm
I/O Options 32-bit external memory card (PEI-306)
NPU Options 4167
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------+----------+----------------------+----------|
| Chassis fan | J1 | Speaker | J5 |
| power | | | |
|---------------+----------+----------------------+----------|
| Power LED & | J2 | Turbo switch | J6 |
| keylock | | | |
|---------------+----------+----------------------+----------|
| Turbo LED | J3 | 32-bit external | SL1 |
| | | memory card | |
|---------------+----------+----------------------+----------|
| Reset switch | J4 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|-------------------------------+---------------+------------|
| | Turbo switch select | J6 | pins 1 & 2 |
| | normal emulate without | | closed |
| | cache support | | |
|---+---------------------------+---------------+------------|
| | Turbo switch select turbo | J6 | Open |
| | cache support high speed | | |
|---+---------------------------+---------------+------------|
| | Turbo switch select press | J6 | pins 2 & 3 |
| | CTRL, ALT, - | | closed |
|---+---------------------------+---------------+------------|
| » | BIOS type select 27256 | W3 | pins 1 & 2 |
| | | | closed |
|---+---------------------------+---------------+------------|
| | BIOS type select 27512 | W3 | pins 2 & 3 |
| | | | closed |
|---+---------------------------+---------------+------------|
| » | Cache video BIOS enabled | W6 | Closed |
|---+---------------------------+---------------+------------|
| | Cache video BIOS disabled | W6 | Open |
|---+---------------------------+---------------+------------|
| » | Monitor type select | SW1/4 | Off |
| | monochrome | | |
|---+---------------------------+---------------+------------|
| | Monitor type select color | SW1/4 | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | TAG 0 | TAG 1 |
|------------+---------------+---------------+---------------|
| 64KB | (8) 16K x 4 | (1) 16K x 1 | (2) 16K x 4 |
|------------+---------------+---------------+---------------|
| 256KB | (8) 64K x 4 | (1) 64K x 1 | (2) 64K x 4 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | W1 | W2 |
|------------------+--------------------+--------------------|
| 64KB | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 256KB | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+
(IMG) IMG 2
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 0A | Bank 1A | Bank 2A |
|----------+---------+---------+---------+---------+---------|
| 1MB | (4) | NONE | NONE | NONE | NONE |
| | 256K x | | | | |
| | 9 | | | | |
|----------+---------+---------+---------+---------+---------|
| 2MB | (4) | (4) | NONE | NONE | NONE |
| | 256K x | 256K x | | | |
| | 9 | 9 | | | |
|----------+---------+---------+---------+---------+---------|
| 3MB | (4) | (4) | (4) | NONE | NONE |
| | 256K x | 256K x | 256K x | | |
| | 9 | 9 | 9 | | |
|----------+---------+---------+---------+---------+---------|
| 4MB (A) | (4) 1M | NONE | NONE | NONE | NONE |
| | x 9 | | | | |
|----------+---------+---------+---------+---------+---------|
| 4MB (B) | (4) | (4) | (4) | (4) | NONE |
| | 256K x | 256K x | 256K x | 256K x | |
| | 9 | 9 | 9 | 9 | |
|----------+---------+---------+---------+---------+---------|
| 5MB | (4) | (4) | (4) | (4) | (4) |
| | 256K x | 256K x | 256K x | 256K x | 256K x |
| | 9 | 9 | 9 | 9 | 9 |
|----------+---------+---------+---------+---------+---------|
| 6MB | (4) | (4) | (4) 1M | NONE | NONE |
| | 256K x | 256K x | x 9 | | |
| | 9 | 9 | | | |
|----------+---------+---------+---------+---------+---------|
| 8MB | (4) 1M | (4) 1M | NONE | NONE | NONE |
| | x 9 | x 9 | | | |
|----------+---------+---------+---------+---------+---------|
| 9MB | (4) 1M | (4) 1M | (4) | NONE | NONE |
| | x 9 | x 9 | 256K x | | |
| | | | 9 | | |
|----------+---------+---------+---------+---------+---------|
| 10MB (A) | (4) 1M | (4) 1M | (4) | (4) | NONE |
| | x 9 | x 9 | 256K x | 256K x | |
| | | | 9 | 9 | |
|----------+---------+---------+---------+---------+---------|
| 10MB (B) | (4) | (4) | (4) 1M | (4) 1M | NONE |
| | 256K x | 256K x | x 9 | x 9 | |
| | 9 | 9 | | | |
|----------+---------+---------+---------+---------+---------|
| 11MB | (4) 1M | (4) 1M | (4) | (4) | (4) |
| | x 9 | x 9 | 256K x | 256K x | 256K x |
| | | | 9 | 9 | 9 |
|----------+---------+---------+---------+---------+---------|
| 12MB | (4) 1M | (4) 1M | (4) 1M | NONE | NONE |
| | x 9 | x 9 | x 9 | | |
|----------+---------+---------+---------+---------+---------|
| 14MB | (4) | (4) | (4) 1M | (4) 1M | (4) 1M |
| | 256K x | 256K x | x 9 | x 9 | x 9 |
| | 9 | 9 | | | |
|----------+---------+---------+---------+---------+---------|
| 16MB | (4) 1M | (4) 1M | (4) 1M | (4) 1M | NONE |
| | x 9 | x 9 | x 9 | x 9 | |
|------------------------------------------------------------|
| Note: Banks 0A, 1A, and 2A are located on the external |
| memory card |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | W1 | W2 | W3 | W4 | W5 |
|----------+---------+---------+---------+---------+---------|
| 1MB | N/A | N/A | N/A | 2 & 3 | 2 & 3 |
|----------+---------+---------+---------+---------+---------|
| 2MB | N/A | N/A | N/A | 2 & 3 | 2 & 3 |
|----------+---------+---------+---------+---------+---------|
| 3MB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|----------+---------+---------+---------+---------+---------|
| 4MB (A) | N/A | N/A | N/A | 1 & 2 | 1 & 2 |
|----------+---------+---------+---------+---------+---------|
| 4MB (B) | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|----------+---------+---------+---------+---------+---------|
| 5MB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|----------+---------+---------+---------+---------+---------|
| 6MB | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 | 2 & 3 |
|----------+---------+---------+---------+---------+---------|
| 8MB | N/A | N/A | N/A | 1 & 2 | 1 & 2 |
|----------+---------+---------+---------+---------+---------|
| 9MB | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 |
|----------+---------+---------+---------+---------+---------|
| 10MB (A) | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 |
|----------+---------+---------+---------+---------+---------|
| 10MB (B) | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 | 2 & 3 |
|----------+---------+---------+---------+---------+---------|
| 11MB | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 |
|----------+---------+---------+---------+---------+---------|
| 12MB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|----------+---------+---------+---------+---------+---------|
| 14MB | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 | 2 & 3 |
|----------+---------+---------+---------+---------+---------|
| 16MB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|------------------------------------------------------------|
| Note: W4, W5 are located on the mainboard. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM SWITCH CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | SW1/1 | SW1/2 | SW1/3 |
|---------------+--------------+--------------+--------------|
| 1MB | On | On | On |
|---------------+--------------+--------------+--------------|
| 2MB | On | On | On |
|---------------+--------------+--------------+--------------|
| 3MB | On | On | On |
|---------------+--------------+--------------+--------------|
| 4MB (A) | On | On | Off |
|---------------+--------------+--------------+--------------|
| 4MB (B) | On | On | On |
|---------------+--------------+--------------+--------------|
| 5MB | On | Off | On |
|---------------+--------------+--------------+--------------|
| 6MB | On | Off | On |
|---------------+--------------+--------------+--------------|
| 8MB | On | Off | Off |
|---------------+--------------+--------------+--------------|
| 9MB | Off | On | Off |
|---------------+--------------+--------------+--------------|
| 10MB (A) | Off | On | Off |
|---------------+--------------+--------------+--------------|
| 10MB (B) | Off | On | On |
|---------------+--------------+--------------+--------------|
| 11MB | Off | On | Off |
|---------------+--------------+--------------+--------------|
| 12MB | Off | On | Off |
|---------------+--------------+--------------+--------------|
| 14MB | Off | Off | On |
|---------------+--------------+--------------+--------------|
| 16MB | Off | Off | Off |
|------------------------------------------------------------|
| Note: SW1 is located on the mainboard. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM SWITCH CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | SW2/1 | SW2/2 | SW2/3 | SW2/4 | SW2/5 |
|----------+---------+---------+---------+---------+---------|
| 1MB | N/A | N/A | N/A | N/A | N/A |
|----------+---------+---------+---------+---------+---------|
| 2MB | N/A | N/A | N/A | N/A | N/A |
|----------+---------+---------+---------+---------+---------|
| 3MB | On | On | Off | Off | On |
|----------+---------+---------+---------+---------+---------|
| 4MB (A) | N/A | N/A | N/A | N/A | N/A |
|----------+---------+---------+---------+---------+---------|
| 4MB (B) | On | On | Off | Off | On |
|----------+---------+---------+---------+---------+---------|
| 5MB | On | On | Off | Off | On |
|----------+---------+---------+---------+---------+---------|
| 6MB | On | Off | Off | Off | On |
|----------+---------+---------+---------+---------+---------|
| 8MB | N/A | N/A | N/A | N/A | N/A |
|----------+---------+---------+---------+---------+---------|
| 9MB | On | On | On | Off | Off |
|----------+---------+---------+---------+---------+---------|
| 10MB (A) | On | On | On | Off | Off |
|----------+---------+---------+---------+---------+---------|
| 10MB (B) | On | Off | Off | Off | On |
|----------+---------+---------+---------+---------+---------|
| 11MB | On | On | On | Off | Off |
|----------+---------+---------+---------+---------+---------|
| 12MB | On | Off | On | Off | Off |
|----------+---------+---------+---------+---------+---------|
| 14MB | On | Off | Off | Off | On |
|----------+---------+---------+---------+---------+---------|
| 16MB | On | Off | On | Off | Off |
|------------------------------------------------------------|
| Note: SW2 is located on the memory card |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM SWITCH CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | SW2/6 | SW2/7 | SW2/8 | SW2/9 | SW2/10 |
|----------+---------+---------+---------+---------+---------|
| 1MB | N/A | N/A | N/A | N/A | N/A |
|----------+---------+---------+---------+---------+---------|
| 2MB | N/A | N/A | N/A | N/A | N/A |
|----------+---------+---------+---------+---------+---------|
| 3MB | Off | Off | On | On | N/A |
|----------+---------+---------+---------+---------+---------|
| 4MB (A) | N/A | N/A | N/A | N/A | N/A |
|----------+---------+---------+---------+---------+---------|
| 4MB (B) | Off | Off | On | On | N/A |
|----------+---------+---------+---------+---------+---------|
| 5MB | Off | Off | On | On | N/A |
|----------+---------+---------+---------+---------+---------|
| 6MB | Off | Off | On | On | N/A |
|----------+---------+---------+---------+---------+---------|
| 8MB | N/A | N/A | N/A | N/A | N/A |
|----------+---------+---------+---------+---------+---------|
| 9MB | Off | Off | On | On | N/A |
|----------+---------+---------+---------+---------+---------|
| 10MB (A) | Off | Off | On | On | N/A |
|----------+---------+---------+---------+---------+---------|
| 10MB (B) | Off | Off | On | On | N/A |
|----------+---------+---------+---------+---------+---------|
| 11MB | Off | Off | On | On | N/A |
|----------+---------+---------+---------+---------+---------|
| 12MB | Off | Off | On | On | N/A |
|----------+---------+---------+---------+---------+---------|
| 14MB | Off | Off | On | On | N/A |
|----------+---------+---------+---------+---------+---------|
| 16MB | Off | Off | On | On | N/A |
|------------------------------------------------------------|
| Note: SW2 is located on the memory card. |
+------------------------------------------------------------+