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# TEKNOR INDUSTRIAL COMPUTERS, INC.
TEK-AT4L PLUS
Device Single board computer
Type
Processor 80486SX/80486SX2/80486DX/AM486DX2/80486DX2/AM486DX4/
80486DX4/AM 5X86
Processor 25/33/50(internal)/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set VLSI 82C486
Maximum 128MB (EDO & SDRAM supported)
Onboard
Memory
Cache 128/256/512/1024/2048KB
BIOS Unidentified
Dimensions 341mm x 119mm
I/O Floppy drive interface, IDE interface, parallel port, PS/2
Options () mouse interface, serial ports (2)
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|--------------------+----------+-----------------+----------|
| IDE interface | J1 | Power connector | J5 |
|--------------------+----------+-----------------+----------|
| Floppy drive | J2 | Serial port 1 | J6 |
| interface | | | |
|--------------------+----------+-----------------+----------|
| Front panel | J3 | Parallel port | J7 |
| connector | | | |
|--------------------+----------+-----------------+----------|
| PS/2 mouse | J3A | Chassis fan | J10 |
| interface | | power | |
|--------------------+----------+-----------------+----------|
| Serial port 2 | J4 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|----------------------------------+----------+--------------|
| | Boot from flash | SW1/pins | Closed |
| | | 1 & 2 | |
|---+------------------------------+----------+--------------|
| | Boot from drive | SW1/pins | Open |
| | | 1 & 2 | |
|---+------------------------------+----------+--------------|
| | Serial port select for VT100 | SW1/pins | Closed |
| | download COM2 | 3 & 4 | |
|---+------------------------------+----------+--------------|
| | Serial port select for VT100 | SW1/pins | Open |
| | download COM1 | 3 & 4 | |
|---+------------------------------+----------+--------------|
| | Display mode select VT100 | SW1/pins | Closed |
| | | 5 & 6 | |
|---+------------------------------+----------+--------------|
| | Display mode select standard | SW1/pins | Open |
| | | 5 & 6 | |
|---+------------------------------+----------+--------------|
| | Download mode select remote | SW1/pins | Closed |
| | | 7 & 8 | |
|---+------------------------------+----------+--------------|
| | Download mode select normal | SW1/pins | Open |
| | | 7 & 8 | |
|---+------------------------------+----------+--------------|
| » | Factory configured - do not | SW2 | Unidentified |
| | alter | | |
|---+------------------------------+----------+--------------|
| » | Power fail detection | W7 | Pins 1 & 2 |
| | | | closed |
|---+------------------------------+----------+--------------|
| | Low battery detection | W7 | Pins 2 & 3 |
| | | | closed |
|---+------------------------------+----------+--------------|
| » | Vbatt disabled | W10 | Open |
|---+------------------------------+----------+--------------|
| | Vbatt enabled | W10 | Closed |
|---+------------------------------+----------+--------------|
| » | IOCHRDY signal to IDE | W11 | Open |
| | interface disabled | | |
|---+------------------------------+----------+--------------|
| | IOCHRDY signal to IDE | W11 | Closed |
| | interface enabled | | |
|---+------------------------------+----------+--------------|
| » | Watchdog timer enabled | W12 | Closed |
|---+------------------------------+----------+--------------|
| | Watchdog timer disabled | W12 | Open |
|---+------------------------------+----------+--------------|
| » | Power monitoring disabled | W13 | Open |
|---+------------------------------+----------+--------------|
| | Power monitoring enabled | W13 | Closed |
|---+------------------------------+----------+--------------|
| » | Flash BIOS write enabled | W14 | Closed |
|---+------------------------------+----------+--------------|
| | Flash BIOS write disabled | W14 | Open |
|---+------------------------------+----------+--------------|
| » | BIOS write select EPROM | W15 | Open |
|---+------------------------------+----------+--------------|
| | BIOS write select flash | W15 | Closed |
|---+------------------------------+----------+--------------|
| » | Teknor BIOS extension | W16 | Open |
| | enabled | | |
|---+------------------------------+----------+--------------|
| | Teknor BIOS extension | W16 | Closed |
| | disabled | | |
|---+------------------------------+----------+--------------|
| » | PS/2 mouse enabled | W19A | Closed |
|---+------------------------------+----------+--------------|
| | PS/2 mouse disabled | W19A | Open |
|---+------------------------------+----------+--------------|
| » | Monitor type select color | W22 | Open |
|---+------------------------------+----------+--------------|
| | Monitor type select | W22 | Closed |
| | monochrome | | |
|---+------------------------------+----------+--------------|
| | Parallel port IRQ select | W25 | Pins 1 & 2 |
| | IRQ5 | | closed |
|---+------------------------------+----------+--------------|
| | Parallel port IRQ select | W25 | Pins 2 & 3 |
| | IRQ7 | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 |
|----------------------------+-------------------------------|
| 1MB | (4) 256K x 9 |
|----------------------------+-------------------------------|
| 4MB | (4) 1M x 9 |
|----------------------------+-------------------------------|
| 16MB | (4) 4M x 9 |
|----------------------------+-------------------------------|
| 32MB | (4) 8M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 1MB | (1) 256K x 36 | None |
|------------------+--------------------+--------------------|
| 2MB | (1) 512K x 36 | None |
|------------------+--------------------+--------------------|
| 2MB | (1) 256K x 36 | (1) 256K x 36 |
|------------------+--------------------+--------------------|
| 3MB | (1) 512K x 36 | (1) 256K x 36 |
|------------------+--------------------+--------------------|
| 4MB | (1) 1M x 36 | None |
|------------------+--------------------+--------------------|
| 4MB | (1) 512K x 36 | (1) 512K x 36 |
|------------------+--------------------+--------------------|
| 5MB | (1) 1M x 36 | (1) 256K x 36 |
|------------------+--------------------+--------------------|
| 6MB | (1) 1M x 36 | (1) 512K x 36 |
|------------------+--------------------+--------------------|
| 8MB | (1) 2M x 36 | None |
|------------------+--------------------+--------------------|
| 8MB | (1) 1M x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 9MB | (1) 2M x 36 | (1) 256K x 36 |
|------------------+--------------------+--------------------|
| 10MB | (1) 2M x 36 | (1) 512K x 36 |
|------------------+--------------------+--------------------|
| 12MB | (1) 2M x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 16MB | (1) 4M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | (1) 2M x 36 | (1) 2M x 36 |
|------------------+--------------------+--------------------|
| 17MB | (1) 4M x 36 | (1) 256K x 36 |
|------------------+--------------------+--------------------|
| 18MB | (1) 4M x 36 | (1) 512K x 36 |
|------------------+--------------------+--------------------|
| 20MB | (1) 4M x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (1) 4M x 36 | (1) 2M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (1) 8M x 36 | None |
|------------------+--------------------+--------------------|
| 32MB | (1) 4M x 36 | (1) 4M x 36 |
+------------------------------------------------------------+
+--------------------------------------------------+
| CACHE CONFIGURATION |
|--------------------------------------------------|
| Note: The location of the cache is unidentified. |
+--------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| Speed | W21 |
|--------------------------+---------------------------------|
| 25MHz | Pins 1 & 2, 3 & 4, 5 & 6 closed |
|--------------------------+---------------------------------|
| 33MHz | Pins 3 & 4, 5 & 6 closed |
|--------------------------+---------------------------------|
| 50iMHz | Pins 1 & 2, 3 & 4, 5 & 6 closed |
|--------------------------+---------------------------------|
| 66iMHz | Pins 3 & 4, 5 & 6 closed |
|--------------------------+---------------------------------|
| 75iMHz | Pins 1 & 2, 3 & 4, 5 & 6 closed |
|--------------------------+---------------------------------|
| 100iMHz | Pins 3 & 4, 5 & 6 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | W17 | W18 | W19 | W26 |
|----------+--------------+------------+------------+--------|
| 80486SX | Open | Pins 1 & 2 | Open | Open |
| | | closed | | |
|----------+--------------+------------+------------+--------|
| 80486SX2 | Open | Pins 1 & 2 | Open | Open |
| | | closed | | |
|----------+--------------+------------+------------+--------|
| 80486DX | Pins 1 & 2 | Pins 2 & 3 | Pins 1 & 2 | Open |
| | closed | closed | closed | |
|----------+--------------+------------+------------+--------|
| AM486DX2 | Pins 1 & 2 | Pins 2 & 3 | Pins 1 & 2 | Closed |
| | closed | closed | closed | |
|----------+--------------+------------+------------+--------|
| 80486DX2 | Pins 1 & 2 | Pins 2 & 3 | Pins 1 & 2 | Open |
| | closed | closed | closed | |
|----------+--------------+------------+------------+--------|
| 80486DX2 | Pins 1 & 2 | Pins 2 & 3 | Pins 1 & 2 | Open |
| (WB) | closed | closed | closed | |
|----------+--------------+------------+------------+--------|
| ODP486 | Pins 1 & 2 | Pins 2 & 3 | Pins 2 & 3 | Open |
| | closed | closed | closed | |
|----------+--------------+------------+------------+--------|
| 80486DX4 | Pins 1 & 2 | Pins 2 & 3 | Pins 1 & 2 | Open |
| | closed | closed | closed | |
|----------+--------------+------------+------------+--------|
| AM486DX4 | Pins 1 & 2 | Pins 2 & 3 | Pins 1 & 2 | Open |
| | closed | closed | closed | |
|----------+--------------+------------+------------+--------|
| 80486DX4 | Pins 1 & 2 | Pins 2 & 3 | Pins 1 & 2 | Open |
| (WB) | closed | closed | closed | |
|----------+--------------+------------+------------+--------|
| AM 5X86 | Pins 1 & 2 | Pins 2 & 3 | Pins 1 & 2 | Closed |
| | closed | closed | closed | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | W27 |
|-------------------------------+----------------------------|
| 3.3v | Open |
|-------------------------------+----------------------------|
| 5v | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUSCLK SIGNAL SELECTION |
|------------------------------------------------------------|
| Speed | W20 |
|----------------------------+-------------------------------|
| 16MHz | Pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 25MHz | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 33MHz | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA CHANNEL SELECTION |
|------------------------------------------------------------|
| Channel | W23 | W24 |
|------------------+--------------------+--------------------|
| 1 | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 3 | Pins 2 & 3 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 SELECTION |
|------------------------------------------------------------|
| Setting | W1 | W2 | W3 | W4 | W5 | W6 |
|---------+--------+-------+--------+--------+-------+-------|
| RS-232 | 1 & 2 | 1 & 2 | Open | Open | 1 & 2 | 1 & 2 |
|---------+--------+-------+--------+--------+-------+-------|
| RS-485 | 2 & 3 | 2 & 3 | Closed | Closed | 2 & 3 | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| EDOUT SELECTION |
|------------------------------------------------------------|
| Setting | W8 |
|---------------------------------+--------------------------|
| EDOUT left to software | Open |
|---------------------------------+--------------------------|
| EDOUT to pin 29 & ground to pin | Pins 1 & 3, 2 & 4 closed |
| 17 | |
|---------------------------------+--------------------------|
| EDOUT to pin 17 & ground to pin | Pins 1 & 2, 3 & 4 closed |
| 29 | |
|------------------------------------------------------------|
| Note: The above listed pins are located on J2. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| HDOUT SELECTION |
|------------------------------------------------------------|
| Setting | W9 |
|---------------------------------+--------------------------|
| HDOUT left to software | Open |
|---------------------------------+--------------------------|
| HDOUT to pin 33 & ground to pin | Pins 1 & 3, 2 & 4 closed |
| 27 | |
|---------------------------------+--------------------------|
| HDOUT to pin 27 & ground to pin | Pins 1 & 2, 3 & 4 closed |
| 33 | |
|------------------------------------------------------------|
| Note: The above listed pins are located on J2. |
+------------------------------------------------------------+