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# BIOSTAR MICROTECH INTERNATIONAL CORPORATION
MB-8500TVX
Processor CX M1/AM K5/Pentium
Processor Speed 75/90/100/120/133/150/166/180/200MHz
Chip Set Intel
Video Chip Set None
Maximum Onboard 128MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 256/512KB
BIOS AMI
Dimensions 220mm x 220mm
I/O Options 32-bit PCI slots (3), floppy drive interface,
green PC connector, IDE interfaces (2),
parallel port, PS/2 mouse interface, serial
ports (2), IR connector, USB connector
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+---------------+-----------|
| Serial port 1 | CN1 | Power LED & | J13 pins |
| | | keylock | 5 - 9 |
|---------------------+----------+---------------+-----------|
| Serial port 2 | CN2 | Turbo LED | J13 pins |
| | | | 10 & 11 |
|---------------------+----------+---------------+-----------|
| Parallel port | CN3 | Reset switch | J13 pins |
| | | | 12 & 13 |
|---------------------+----------+---------------+-----------|
| Floppy drive | CN4 | Green PC | J13 pins |
| interface | | connector | 17 & 18 |
|---------------------+----------+---------------+-----------|
| IDE interface 2 | CN5 | IDE interface | J13 pins |
| | | LED | 20 & 21 |
|---------------------+----------+---------------+-----------|
| IDE interface 1 | CN6 | +5v ground | J13 pins |
| | | | 25 & 26 |
|---------------------+----------+---------------+-----------|
| USB connector | J3 | IR connector | J14 |
|---------------------+----------+---------------+-----------|
| PS/2 mouse | J5 | Chassis fan | JP13 |
| interface | | power | |
|---------------------+----------+---------------+-----------|
| Speaker | J13 pins | 32-bit PCI | PC1 - PC3 |
| | 1 - 4 | slots | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-----------------------------------+-------+----------------|
| | Flash BIOS voltage select 12v | JP3 | Pins 2 & 3 |
| | | | closed |
|---+-------------------------------+-------+----------------|
| | Flash BIOS voltage select 5v | JP3 | Pins 1 & 2 |
| | | | closed |
|---+-------------------------------+-------+----------------|
| ยป | CMOS memory normal operation | JP4 | Open |
|---+-------------------------------+-------+----------------|
| | CMOS memory clear | JP4 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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) 2M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 4M x 36 | None |
|------------------+--------------------+--------------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 40MB | (2) 4M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (2) 4M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 8M x 36 | None |
|------------------+--------------------+--------------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 72MB | (2) 8M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 80MB | (2) 8M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 96MB | (2) 8M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | TAG |
|------------------+--------------------+--------------------|
| 256KB | (2) 32K x 32 | (1) 8K/32K x 8 |
|------------------+--------------------+--------------------|
| 512KB | (2) 64K x 32 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP7 |
|-----------------------------+------------------------------|
| 256KB | Open |
|-----------------------------+------------------------------|
| 512KB | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CYRIX) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP5 | JP8 | JP9 |
| speed | speed | | | | |
|----------+---------+-------------+---------+-------+-------|
| 120MHz | 50MHz | 2x | 1 & 2, | Open | See |
| | | | 3 & 4 | | note |
|----------+---------+-------------+---------+-------+-------|
| 133MHz | 55MHz | 2x | Open | Open | See |
| | | | | | note |
|----------+---------+-------------+---------+-------+-------|
| 150MHz | 60MHz | 2x | 1 & 2 | Open | See |
| | | | | | note |
|----------+---------+-------------+---------+-------+-------|
| 166MHz | 66MHz | 2x | 3 & 4 | Open | See |
| | | | | | note |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. If |
| Rev. 2.2 is used, set JP9 to open. If Rev. 2.3 is used, |
| set JP9 to closed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AMD) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP5 | JP8 | JP9 |
| speed | speed | | | | |
|----------+--------+------------+-----------+------+--------|
| 75MHz | 50MHz | 1.5x | 1 & 2, 3 | Open | Open |
| | | | & 4 | | |
|----------+--------+------------+-----------+------+--------|
| 90MHz | 60MHz | 1.5x | 1 & 2 | Open | Open |
|----------+--------+------------+-----------+------+--------|
| 100MHz | 66MHz | 1.5x | 3 & 4 | Open | Open |
|----------+--------+------------+-----------+------+--------|
| 120MHz | 60MHz | 1.5x | 1 & 2 | Open | Open |
|----------+--------+------------+-----------+------+--------|
| 133MHz | 66MHz | 1.5x | 3 & 4 | Open | Open |
|----------+--------+------------+-----------+------+--------|
| 150MHz | 60MHz | 2x | 1 & 2 | Open | Closed |
|----------+--------+------------+-----------+------+--------|
| 166MHz | 66MHz | 2x | 3 & 4 | Open | Closed |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP5 | JP8 | JP9 |
| speed | speed | | | | |
|---------+--------+------------+----------+--------+--------|
| 75MHz | 50MHz | 1.5x | 1 & 2, 3 | Open | Open |
| | | | & 4 | | |
|---------+--------+------------+----------+--------+--------|
| 90MHz | 60MHz | 1.5x | 1 & 2 | Open | Open |
|---------+--------+------------+----------+--------+--------|
| 100MHz | 66MHz | 1.5x | 3 & 4 | Open | Open |
|---------+--------+------------+----------+--------+--------|
| 120MHz | 60MHz | 2x | 1 & 2 | Open | Closed |
|---------+--------+------------+----------+--------+--------|
| 133MHz | 66MHz | 2x | 3 & 4 | Open | Closed |
|---------+--------+------------+----------+--------+--------|
| 150MHz | 60MHz | 2.5x | 1 & 2 | Closed | Closed |
|---------+--------+------------+----------+--------+--------|
| 166MHz | 66MHz | 2.5x | 3 & 4 | Closed | Closed |
|---------+--------+------------+----------+--------+--------|
| 180MHz | 60MHz | 3x | 1 & 2 | Closed | Open |
|---------+--------+------------+----------+--------+--------|
| 200MHz | 66MHz | 3x | 3 & 4 | Closed | Open |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | JP6 | JP11 |
|-----------------+-------------------+----------------------|
| CX M1 | Pins 1 & 2 closed | Pins 1 & 2, 3 & 4 |
| | | closed |
|-----------------+-------------------+----------------------|
| AM K5 | Pins 1 & 2 closed | Pins 1 & 2, 3 & 4 |
| (PrxxxAB/AC/AF) | | closed |
|-----------------+-------------------+----------------------|
| P54C/CQS/CT | Pins 1 & 2 closed | Pins 1 & 2, 3 & 4 |
| | | closed |
|-----------------+-------------------+----------------------|
| AM K5 | Pins 2 & 3 closed | Open |
| (PrxxxAH/AJ/AK) | | |
|-----------------+-------------------+----------------------|
| P55C/CT | Pins 2 & 3 closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (SINGLE) |
|------------------------------------------------------------|
| Voltage | JP12 |
|------------------------------+-----------------------------|
| 3.4v | Closed |
|------------------------------+-----------------------------|
| 3.5v | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (DUAL) |
|------------------------------------------------------------|
| Voltage | V core | JP12 | JP14 |
|---------------+--------------+--------------+--------------|
| 3.4v | 2.6v | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 3.4v | 2.9v | Open | Closed |
|---------------+--------------+--------------+--------------|
| 3.5v | 2.6v | Closed | Open |
|---------------+--------------+--------------+--------------|
| 3.5v | 2.9v | Open | Open |
+------------------------------------------------------------+