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# AUSTIN COMPUTER SYSTEMS
486/DX2 33i/50i(TC-4)
Processor 80486DX/80486DX2
Processor Speed 25/33/50(internal)/66(internal)MHz
Chip Set C & T
Max. Onboard DRAM 32MB
Cache 64/128/256KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options 32-bit external memory card slot
NPU Options 4167
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Speaker | JP7 | Turbo LED | JP10 |
|-------------------+----------+------------------+----------|
| Power LED & | JP8 | Turbo switch | JP11 |
| keylock | | | |
|-------------------+----------+------------------+----------|
| Reset switch | JP9 | External battery | JP2 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS ||
|-----------------------------------------------------------||
| Function | Jumper | Position ||
|-------------------------------------+--------+------------||
| » | Factory configured - do not | J3 | N/A ||
| | alter | | ||
|---+---------------------------------+--------+------------||
| » | Factory configured - do not | J4 | N/A ||
| | alter | | ||
|---+---------------------------------+--------+------------||
| » | CMOS memory normal operation | JP3 | pins 1 & 2 ||
| | | | closed ||
|---+---------------------------------+--------+------------||
| | CMOS memory clear | JP3 | pins 2 & 3 ||
| | | | closed ||
|---+---------------------------------+--------+------------||
| » | Monitor type select color | JP4 | pins 1 & 2 ||
| | | | closed ||
|---+---------------------------------+--------+------------||
| | Monitor type select monochrome | JP4 | pins 2 & 3 ||
| | | | closed ||
|---+---------------------------------+--------+------------||
| » | Factory configured - do not | JP5 | N/A ||
| | alter | | ||
|---+---------------------------------+--------+------------||
| » | DRAM type select identical | JP6 | pins 1 & 2 ||
| | | | closed ||
|---+---------------------------------+--------+------------||
| | DRAM type select mixed | JP6 | pins 2 & 3 ||
| | | | closed ||
|---+---------------------------------+--------+------------||
| » | Factory configured - do not | JP12 | N/A ||
| | alter | | ||
|---+---------------------------------+--------+------------||
| » | Factory configured - do not | JP13 | N/A ||
| | alter | | ||
|---+---------------------------------+--------+------------||
| » | Factory configured - do not | JP15 | N/A ||
| | alter | | ||
|---+---------------------------------+--------+------------||
| » | Factory configured - do not | JP16 | N/A ||
| | alter | | ||
|---+--------------------------------------------------------|
| | Note : The location of J3 is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG 1 | TAG 2 |
|-------+-------------+------------+------------+------------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 | (1) 8K x 8 |
|-------+-------------+------------+------------+------------|
| 128KB | (4) 32K x 8 | NONE | (1) 32K x | NONE |
| | | | 8 | |
|-------+-------------+------------+------------+------------|
| 256KB | (4) 32K x 8 | (4) 32K x | (1) 32K x | (1) 32K x |
| | | 8 | 8 | 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
|Size |SR1 |SR2 |SR3 |SR4 |SR5 |SR6 |SR7 |SR8 |SR9 |SR10|SR11|
|-----+----+----+----+----+----+----+----+----+----+----+----|
|64KB |2 & |1 & |1 & |1 & |1 & |1 & |2 & |2 & |1 & |1 & |1 & |
| | 3 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 2 | 2 | 2 |
|-----+----+----+----+----+----+----+----+----+----+----+----|
|128KB|2 & |1 & |1 & |1 & |2 & |1 & |2 & |2 & |1 & |1 & |1 & |
| | 3 | 2 | 2 | 2 | 3 | 2 | 3 | 3 | 2 | 2 | 2 |
|-----+----+----+----+----+----+----+----+----+----+----+----|
|256KB|2 & |2 & |2 & |2 & |2 & |2 & |1 & |2 & |2 & |2 & |2 & |
| | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 3 | 3 | 3 | 3 |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BATTERY CONFIGURATION |
|------------------------------------------------------------|
| Type | JP1 | JP2 |
|--------------------+-------------------+-------------------|
| Internal | Closed | Open |
|--------------------+-------------------+-------------------|
| External | Open | Closed |
+------------------------------------------------------------+