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# BIOSTAR MICROTECH INTERNATIONAL CORPORATION
MB-8575/90/00URC
Processor Pentium
Processor Speed 75/90/100/120/133MHz
Chip Set Unidentified
Max. Onboard DRAM 128MB
Cache 256/512/1024KB
BIOS Award
Dimensions 254mm x 218mm
I/O Options Green PC connector, IDE interfaces (2)
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|--------------------+-----------+---------------+-----------|
| IDE interface 2 | CN2 | Turbo switch | JP15 pins |
| | | | 14 - 16 |
|--------------------+-----------+---------------+-----------|
| IDE interface 1 | CN1 | +5v ground | JP15 pins |
| | | | 17 - 18 |
|--------------------+-----------+---------------+-----------|
| Speaker | JP15 pins | Green PC | JP16 |
| | 1 - 4 | connector | |
|--------------------+-----------+---------------+-----------|
| Power LED & | JP15 pins | IDE interface | JP18 |
| keylock | 5 - 9 | LED | |
|--------------------+-----------+---------------+-----------|
| Turbo LED | JP15 pins | Chassis fan | JP19 |
| | 10 - 11 | power | |
|--------------------+-----------+---------------+-----------|
| Reset switch | JP15 pins | 32-bit PCI | PC1 - PC3 |
| | 12 - 13 | slots | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|-------------------------------------+--------+-------------|
| » | CMOS memory normal operation | JP3 | Open |
|---+---------------------------------+--------+-------------|
| | CMOS memory clear | JP3 | Closed |
|---+---------------------------------+--------+-------------|
| » | BIOS type select 5v flash BIOS | JP17 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | BIOS type select 12v flash BIOS | JP17 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | BIOS type select EPROM | JP17 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 36 | NONE |
|------------------+--------------------+--------------------|
| 16MB | (2) 2M x 36 | NONE |
|------------------+--------------------+--------------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (2) 1M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 4M x 36 | NONE |
|------------------+--------------------+--------------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 40MB | (2) 1M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (2) 2M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 8M x 36 | NONE |
|------------------+--------------------+--------------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 72MB | (2) 1M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 80MB | (2) 2M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 96MB | (2) 4M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 512KB | (4) 64K x 8 | (4) 64K x 8 | (1) 32K x 8 |
|------------+---------------+---------------+---------------|
| 1MB | (4) 128K x 8 | (4) 128K x 8 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP11 | JP12 |
|-------------------+--------------------+-------------------|
| 256KB | Open | Open |
|-------------------+--------------------+-------------------|
| 512KB | Closed | Open |
|-------------------+--------------------+-------------------|
| 1MB | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP9 | JP13 | JP14 |
|---------+---------------------------------+-------+--------|
| 75MHz | pins 1 & 2 closed | Open | Open |
|---------+---------------------------------+-------+--------|
| 90MHz | pins 3 & 4 closed | Open | Open |
|---------+---------------------------------+-------+--------|
| 100MHz | pins 1 & 2, 5 & 6 closed | Open | Open |
|---------+---------------------------------+-------+--------|
| 120MHz | pins 3 & 4 closed | Open | Closed |
|---------+---------------------------------+-------+--------|
| 133MHz | pins 1 & 2, 3 & 4 ,5 & 6 closed | Open | Closed |
|------------------------------------------------------------|
| Note: JP13 is located on revision 2 and above. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | JP20 |
|----------------------------+-------------------------------|
| 3.5v | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 3.45v | pins 2 & 3 closed |
+------------------------------------------------------------+