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# AMERICAN DIGICOM CORPORATION
DIGIS-486NL
Processor 80486SX/80486DX/80486DX2
Processor Speed 25/33/50(internal)/50/66(internal)
Chip Set OPTI
Max. Onboard DRAM 32MB
Cache 64/128/256KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options 32-bit VESA local bus slots (2)
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| External battery | J6 | Turbo switch | JJ23 |
|-------------------+----------+------------------+----------|
| Power LED & | J20 | Speaker | J24 |
| keylock | | | |
|-------------------+----------+------------------+----------|
| Reset switch | J22 | 32-bit VESA | S1 |
| | | Local bus slot | |
|-------------------+----------+------------------+----------|
| Turbo LED | J23 | 32-bit VESA | S2 |
| | | Local bus slot | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|-------------------------------+---------------+------------|
| » | CMOS memory normal | J1 | pins 2 & 3 |
| | operation | | closed |
|---+---------------------------+---------------+------------|
| | CMOS memory clear | J1 | pins 1 & 2 |
| | | | closed |
|---+---------------------------+---------------+------------|
| » | Monitor type select color | J3 | Closed |
|---+---------------------------+---------------+------------|
| | Monitor type select | J3 | Open |
| | monochrome | | |
|---+---------------------------+---------------+------------|
| | CPU type select PGA | J29 | Closed |
|---+---------------------------+---------------+------------|
| | CPU type select PQFP | J29 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|------------------+--------------------+--------------------|
| 16MB | (4) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 20MB | (4) 4M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | J11 | J12 | J13 |
|-----------+-------------------+--------+-------------------|
| 80486SX | pins 1 & 2 closed | Open | pins 2 & 3 closed |
|-----------+-------------------+--------+-------------------|
| 80486DX | pins 2 & 3 closed | Closed | pins 1 & 2 closed |
|-----------+-------------------+--------+-------------------|
| 80486DX2 | pins 2 & 3 closed | Closed | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | Wait | J15 | J16 | J17 | J25 | J28 |
| | states | | | | | |
|--------+--------+--------+--------+------+--------+--------|
| 25MHz | 0 | Closed | Open | pins | Open | Open |
| | | | | 1 & | | |
| | | | | 2 | | |
|--------+--------+--------+--------+------+--------+--------|
| 33MHz | 0 | Open | Closed | pins | Open | Open |
| | | | | 1 & | | |
| | | | | 2 | | |
|--------+--------+--------+--------+------+--------+--------|
| 50i | 0 | Closed | Open | pins | Open | Open |
| Mhz | | | | 1 & | | |
| | | | | 2 | | |
|--------+--------+--------+--------+------+--------+--------|
| 50MHz | 1 | Closed | Open | pins | Closed | Closed |
| | | | | 2 & | | |
| | | | | 3 | | |
|--------+--------+--------+--------+------+--------+--------|
| 66i | 0 | Open | Closed | pins | Open | Open |
| MHz | | | | 1 & | | |
| | | | | 2 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Max | Bank 0 | Bank 1 | TAG | TAG |
| | Cachable | | | (U25) | (U26) |
|-------+----------+---------+---------+----------+----------|
| 64KB | 8MB | (4) 8K | (4) 8K | NONE | (1) 8K x |
| | | x 8 | x 8 | | 8 |
|-------+----------+---------+---------+----------+----------|
| 128KB | 16MB | (4) 32K | NONE | NONE | (1) 8K x |
| | | x 8 | | | 8 |
|-------+----------+---------+---------+----------+----------|
| 256KB | 32MB | (4) 32K | (4) 32K | (1) 8K x | (1) 8K x |
| | | x 8 | x 8 | 8 | 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | J8 | J9 | J10 | J14 |
|-------+-----------------+--------+----------------+--------|
| 64KB | pins 2 & 3 | Open | pins 1 & 2 | Open |
| | closed | | closed | |
|-------+-----------------+--------+----------------+--------|
| 128KB | pins 1 & 2 | Closed | pins 2 & 3 | Closed |
| | closed | | closed | |
|-------+-----------------+--------+----------------+--------|
| 256KB | pins 2 & 3 | Closed | pins 1 & 2 | Closed |
| | closed | | closed | |
+------------------------------------------------------------+