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# SHUTTLE COMPUTER INTERNATIONAL, INC.
HOT 409 486 VLB
Processor 80486SX/80487SX/80486DX/80486DX2
Processor Speed 25/33/50(internal)/50/66(internal)MHz
Chip Set OPTI
Max. onboard DRAM 32MB
Cache 64/128/256KB
BIOS AMI
Dimensions 260mm x 220mm
I/O Options 32-bit VESA slots (2)
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| External battery | J1 | Turbo switch | JP28 |
|------------------+----------+-------------------+----------|
| Power LED & | J5 | 32-bit VESA slots | S1 & S2 |
| keylock | | (2) | |
|------------------+----------+-------------------+----------|
| Speaker | J6 | Reset switch | SW1 |
|------------------+----------+-------------------+----------|
| Turbo LED | JP24 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|------------------------------------+--------+--------------|
| » | Battery select internal | J1 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | Battery select external | J1 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| » | Monitor type select color | JP1 | Closed |
|---+--------------------------------+--------+--------------|
| | Monitor type select monochrome | JP1 | 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) 1M x 9 | (4) 256K x 9 |
|------------------+--------------------+--------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 16MB | (4) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 20MB | (4) 1M x 9 | (4) 4M x 9 |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU JUMPER CONFIGURATION/CLOCK GENERATOR IN U45 |
|------------------------------------------------------------|
| CPU Type | JP10 | JP11 | JP12 | JP16 | JP23 |
|-------------+--------+--------+----------+--------+--------|
| 80486SX-25 | Open | Open | pins 2 & | pins 2 | Closed |
| | | | 3 | & 3 | |
|-------------+--------+--------+----------+--------+--------|
| 80486SX-33 | Closed | Open | pins 2 & | pins 2 | Open |
| | | | 3 | & 3 | |
|-------------+--------+--------+----------+--------+--------|
| 80487SX-25 | Open | pins 2 | pins 1 & | pins 2 | Closed |
| | | & 3 | 2, 3 & 4 | & 3 | |
|-------------+--------+--------+----------+--------+--------|
| 80486DX-25 | Open | pins 1 | pins 1 & | pins 2 | Closed |
| | | & 2 | 2. 3 & 4 | & 3 | |
|-------------+--------+--------+----------+--------+--------|
| 80486DX-33 | Closed | pins 1 | pins 1 & | pins 2 | Open |
| | | & 2 | 2, 3 & 4 | & 3 | |
|-------------+--------+--------+----------+--------+--------|
| 80486DX-50 | Open | pins 1 | pins 1 & | pins 1 | Closed |
| | | & 2 | 2, 3 & 4 | & 2 | |
|-------------+--------+--------+----------+--------+--------|
| 80486DX2-50 | Open | pins 1 | pins 1 & | pins 2 | Closed |
| | | & 2 | 2, 3 & 4 | & 3 | |
|-------------+--------+--------+----------+--------+--------|
| 80486DX2-66 | Closed | pins 1 | pins 1 & | pins 2 | Open |
| | | & 2 | 2, 3 & 4 | & 3 | |
|------------------------------------------------------------|
| Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU JUMPER CONFIGURATION/OSCILLATOR IN U45 |
|------------------------------------------------------------|
| CPU Type | JP11 | JP12 | JP16 |
|--------------+------------+-------------------+------------|
| 80486SX-25 | Open | pins 2 & 3 | pins 2 & 3 |
|--------------+------------+-------------------+------------|
| 80486SX-33 | Open | pins 2 & 3 | pins 2 & 3 |
|--------------+------------+-------------------+------------|
| 80487SX-25 | pins 2 & 3 | pins 1 & 2, 3 & 4 | pins 2 & 3 |
|--------------+------------+-------------------+------------|
| 80486DX-25 | pins 1 & 2 | pins 1 & 2. 3 & 4 | pins 2 & 3 |
|--------------+------------+-------------------+------------|
| 80486DX-33 | pins 1 & 2 | pins 1 & 2, 3 & 4 | pins 2 & 3 |
|--------------+------------+-------------------+------------|
| 80486DX-50 | pins 1 & 2 | pins 1 & 2, 3 & 4 | pins 1 & 2 |
|--------------+------------+-------------------+------------|
| 80486DX2-50 | pins 1 & 2 | pins 1 & 2, 3 & 4 | pins 2 & 3 |
|--------------+------------+-------------------+------------|
| 80486DX2-66 | pins 1 & 2 | pins 1 & 2, 3 & 4 | pins 2 & 3 |
|------------------------------------------------------------|
| Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Cache | Location | TAG |
|------------+---------------+---------------+---------------|
| 64KB | (8) 8K x 8 | Banks 0 & 1 | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 128KB | (4) 32K x 8 | Bank 0 | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (8) 32K x 8 | Banks 0 & 1 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP7 | JP9 | JP15 | JP22 |
|---------+-------------------+----------+---------+---------|
| 64KB | pins 2 & 3 closed | Open | Open | Open |
|---------+-------------------+----------+---------+---------|
| 128KB | pins 1 & 2 closed | Closed | Closed | Open |
|---------+-------------------+----------+---------+---------|
| 256KB | pins 2 & 3 closed | Closed | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA BUS SPEED AND WAIT STATE CONFIGURATION |
|------------------------------------------------------------|
| CPU speed | Wait states | J20 | J21 |
|---------------+---------------+--------------+-------------|
| £ 33MHz | 0 wait states | Closed | Closed |
|---------------+---------------+--------------+-------------|
| > 33MHz | 1 wait state | Open | Open |
+------------------------------------------------------------+