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# TARGET MICRO
TYPHOON 486 VESA
Processor 80486SX/80487SX/80486DX/80486DX2
Processor Speed 20/25/33/50 (Internal)/50/66 (Internal)
Chip Set Unichip
Max. onboard DRAM 128MB
Cache 32/64/128/256KB
BIOS AMI
Dimensions 260mm x 220mm
I/O Options 32-bit VESA local bus slots (3)
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| External battery | J4 | Turbo switch | JP17 |
|------------------+----------+-------------------+----------|
| Power LED & | J5 | Reset switch | JP18 |
| keylock | | | |
|------------------+----------+-------------------+----------|
| Speaker | J6 | 32-bit VESA local | S1, S2, |
| | | bus slots | & S3 |
|------------------+----------+-------------------+----------|
| Turbo LED | JP16 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|------------------------------------+--------+--------------|
| » | Monitor type select color | JP1 | Open |
|---+--------------------------------+--------+--------------|
| | Monitor type select monochrome | JP1 | Closed |
|---+--------------------------------+--------+--------------|
| » | CMOS memory normal operation | JP2 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | CMOS memory clear | JP2 | pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|------------------+--------------------+--------------------|
| 64MB | (4) 16M x 9 | NONE |
|------------------+--------------------+--------------------|
| 80MB | (4) 16M x 9 | (4) 4M x 9 |
|------------------+--------------------+--------------------|
| 128MB | (4) 16M x 9 | (4) 16M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|-------------+---------------+---------------+--------------|
| 32KB | (4) 8K x 8 | NONE | 8K x 8 |
|-------------+---------------+---------------+--------------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 | 8K x 8 |
|-------------+---------------+---------------+--------------|
| 128KB | (4) 32K x 8 | NONE | 8K x 8 |
|-------------+---------------+---------------+--------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP6 | JP7 | JP9 | JP11 |
|---------+----------+---------+---------+-------------------|
| 32KB | Open | Open | Open | pins 2 & 3 |
|---------+----------+---------+---------+-------------------|
| 64KB | Open | Closed | Open | pins 1 & 2 |
|---------+----------+---------+---------+-------------------|
| 128KB | Open | Closed | Closed | pins 1 & 2, 3 & 4 |
|---------+----------+---------+---------+-------------------|
| 256KB | Closed | Closed | Closed | pins 1 & 2, 4 & 5 |
|------------------------------------------------------------|
| Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA LOCAL BUS SELECT |
|------------------------------------------------------------|
| Mode | JP40 | JP41 | JP42 |
|---------------+--------------+--------------+--------------|
| VL-Bus Master | Open | Open | Open |
|---------------+--------------+--------------+--------------|
| VL-Bus Slave | Closed | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA CLOCK CONFIGURATION |
|------------------------------------------------------------|
| Mode | JP43 |
|-------------------------------+----------------------------|
| Adjusted VL-BUS clock | pins 1 & 2 closed |
|-------------------------------+----------------------------|
| Normal VL-BUS clock | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA BUS SPEED (ID3) CONFIGURATION |
|------------------------------------------------------------|
| CPU speed | JP19 (ID3) | JP44 |
|-------------------+-------------------+--------------------|
| £ 33MHz | Open | pins 2 & 3 closed |
|-------------------+-------------------+--------------------|
| > 33MHz | Closed | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA ID4 CONFIGURATION |
|------------------------------------------------------------|
| Setting | JP20 (ID4) |
|-------------------------------+----------------------------|
| Reserved for future use | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP29 | JP30 | JP31 |
|---------------+--------------+--------------+--------------|
| 20MHz | Open | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 25MHz | Closed | Open | Closed |
|---------------+--------------+--------------+--------------|
| 33MHz | Closed | Closed | Open |
|---------------+--------------+--------------+--------------|
| 50i MHz | Closed | Open | Closed |
|---------------+--------------+--------------+--------------|
| 50MHz | Open | Closed | Open |
|---------------+--------------+--------------+--------------|
| 66i MHz | Closed | Closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP4 |
|--------------------------+---------------------------------|
| 80486SX | 5 & 6 closed |
|--------------------------+---------------------------------|
| 80487SX | pins 2 & 3, 4 & 5, 6 & 7 closed |
|--------------------------+---------------------------------|
| 80486DX | pins 1 & 2, 4 & 5, 6 & 7 closed |
|--------------------------+---------------------------------|
| 80486DX2 | pins 1 & 2, 4 & 5, 6 & 7 closed |
+------------------------------------------------------------+