BIOSTAR MICROTECH INTERNATIONAL CORPORATION =========================================== MB-8500TAC Processor Pentium Processor Speed 75/90/100/120/133/150/166/180MHz Chip Set Unidentified Maximum Onboard 128MB (EDO supported) Memory Maximum Video None Memory Cache 256/512KB BIOS AMI Dimensions 275mm x 220mm I/O Options 32-bit PCI slots (3), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), VRM connector NPU Options None +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Function | Label | Function | Label | |------------------+-----------+-----------------+-----------| | Serial port 1 | CN1 | Reset switch | J8 pins | | | | | 12 & 13 | |------------------+-----------+-----------------+-----------| | Parallel port | CN2 | Green PC | J8 pins | | | | connector | 17 & 18 | |------------------+-----------+-----------------+-----------| | Serial port 2 | CN3 | IDE interface | J8 pins | | | | LED | 20 & 21 | |------------------+-----------+-----------------+-----------| | Floppy drive | CN4 | VCC ground | J8 pins | | interface | | connector | 25 & 26 | |------------------+-----------+-----------------+-----------| | IDE interface 2 | CN5 | PS/2 mouse port | J11 | |------------------+-----------+-----------------+-----------| | IDE interface 1 | CN6 | Chassis fan | JP19 | | | | power | | |------------------+-----------+-----------------+-----------| | Speaker | J8 pins 1 | 32-bit PCI | PC1 - PC3 | | | - 4 | slots | | |------------------+-----------+-----------------+-----------| | Power LED & | J8 pins 5 | VRM connector | VRM | | keylock | - 9 | | | |------------------+-----------+-----------------+-----------| | Turbo LED | J8 pins | | | | | 10 & 11 | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Setting | Label | Position | |---------------------------------------+-------+------------| |>> | Jumper information unavailable | J12 | N/A | |---+-----------------------------------+-------+------------| |>> | Jumper information unavailable | J13 | N/A | |---+-----------------------------------+-------+------------| |>> | Jumper information unavailable | J21A | N/A | |---+-----------------------------------+-------+------------| |>> | Jumper information unavailable | JP2 | N/A | |---+-----------------------------------+-------+------------| |>> | CMOS memory normal operation | JP4 | Open | |---+-----------------------------------+-------+------------| | | CMOS memory clear | JP4 | Closed | |---+-----------------------------------+-------+------------| | | Flash BIOS voltage select 5v | JP5 | Pins 1 & 2 | | | | | closed | |---+-----------------------------------+-------+------------| | | Flash BIOS voltage select 12v | JP5 | Pins 2 & 3 | | | | | closed | |---+-----------------------------------+-------+------------| | | EPROM installed | JP5 | Open | |---+-----------------------------------+-------+------------| | | Secondary IDE IRQ select IRQ15 | JP8 | Pins 1 & 2 | | | | | closed | |---+-----------------------------------+-------+------------| | | Secondary IDE IRQ select IRQ | JP8 | Pins 2 & 3 | | | through PCI | | closed | |---+-----------------------------------+-------+------------| |>> | Primary IDE IRQ14 enabled | JP9 | Closed | |---+-----------------------------------+-------+------------| | | Primary IDE IRQ14 disabled | JP9 | Open | |---+-----------------------------------+-------+------------| |>> | Jumper information unavailable | JP12 | N/A | |---+-----------------------------------+-------+------------| |>> | Jumper information unavailable | JP13 | N/A | |---+-----------------------------------+-------+------------| |>> | Factory configured - do not alter | JP22 | Pins 2 & 3 | | | | | closed | |---+-----------------------------------+-------+------------| |>> | Jumper information unavailable | JP30 | N/A | |---+-----------------------------------+-------+------------| |>> | Jumper information unavailable | JP31 | N/A | |---+-----------------------------------+-------+------------| |>> | Jumper information unavailable | JP32 | N/A | +------------------------------------------------------------+ +------------------------------------------------------------+ | 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 | |------------------+--------------------+--------------------| | 24MB | (2) 1M x 36 | (2) 2M x 36 | |------------------+--------------------+--------------------| | 32MB | (2) 4M x 36 | None | |------------------+--------------------+--------------------| | 32MB | (2) 2M x 36 | (2) 2M x 36 | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION (CON'T) | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | |------------------+--------------------+--------------------| | 40MB | (2) 4M x 36 | (2) 1M x 36 | |------------------+--------------------+--------------------| | 40MB | (2) 1M x 36 | (2) 4M x 36 | |------------------+--------------------+--------------------| | 48MB | (2) 4M x 36 | (2) 2M 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 | |------------------+--------------------+--------------------| | 66MB | (2) 8M x 36 | (2) 256K x 36 | |------------------+--------------------+--------------------| | 66MB | (2) 256K x 36 | (2) 8M x 36 | |------------------+--------------------+--------------------| | 68MB | (2) 8M x 36 | (2) 512K x 36 | |------------------+--------------------+--------------------| | 68MB | (2) 512K x 36 | (2) 8M x 36 | |------------------+--------------------+--------------------| | 72MB | (2) 8M x 36 | (2) 1M x 36 | |------------------+--------------------+--------------------| | 72MB | (2) 1M x 36 | (2) 8M x 36 | |------------------+--------------------+--------------------| | 80MB | (2) 8M x 36 | (2) 2M x 36 | |------------------+--------------------+--------------------| | 80MB | (2) 2M x 36 | (2) 8M x 36 | |------------------+--------------------+--------------------| | 96MB | (2) 8M x 36 | (2) 4M x 36 | |------------------+--------------------+--------------------| | 96MB | (2) 4M x 36 | (2) 8M x 36 | |------------------+--------------------+--------------------| | 128MB | (2) 8M x 36 | (2) 8M x 36 | |------------------------------------------------------------| | Note: Board accepts EDO memory. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | TAG | |-------------+---------------+------------+-----------------| | 256KB (A) | None | (2) 32K x | None | | | | 32 | | |-------------+---------------+------------+-----------------| | 256KB (B) | (8) 32K x 8 | None | (1) 8K/16K/32K | | | | | x 8 | |-------------+---------------+------------+-----------------| | 512KB (A) | (8) 64K x 8 | None | (1) 16K/32K x 8 | |-------------+---------------+------------+-----------------| | 512KB (B) | (8) 64K x 8 | None | (1) 16K x 8 | |------------------------------------------------------------| | Note: Board will either have asynchronous or synchronous | | cache installed. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE JUMPER CONFIGURATION | |------------------------------------------------------------| | Size | JP10 | |-------------------------------+----------------------------| | None | Open | |-------------------------------+----------------------------| | 256KB (B) (STD/Aster TAG) | Open | |-------------------------------+----------------------------| | 512KB (A) (STD TAG) | Pins 1 & 2 closed | |-------------------------------+----------------------------| | 512KB (B) (Aster TAG) | Pins 2 & 3 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU SPEED SELECTION | |------------------------------------------------------------| | Speed | JP6 | JP7 | JP15 | JP16 | JP21 | |----------+----------+----------+---------+---------+-------| | 75MHz | Open | Open | Open | Open | 1 & 2 | |----------+----------+----------+---------+---------+-------| | 90MHz | Open | Closed | Open | Open | 2 & 3 | |----------+----------+----------+---------+---------+-------| | 100MHz | Closed | Closed | Open | Open | 2 & 3 | |----------+----------+----------+---------+---------+-------| | 120MHz | Open | Closed | Closed | Open | 2 & 3 | |----------+----------+----------+---------+---------+-------| | 133MHz | Closed | Closed | Closed | Open | 2 & 3 | |----------+----------+----------+---------+---------+-------| | 150MHz | Open | Closed | Closed | Closed | 2 & 3 | |----------+----------+----------+---------+---------+-------| | 166MHz | Closed | Closed | Closed | Closed | 2 & 3 | |----------+----------+----------+---------+---------+-------| | 180MHz | Open | Closed | Open | Closed | 2 & 3 | |------------------------------------------------------------| | Note: Pins designated should be in the closed position. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE SELECTION | |------------------------------------------------------------| | Type | JP20 | |----------------------------+-------------------------------| | P54C/CS/CQS/CT | Pins 1 & 2, 3 & 4 closed | |----------------------------+-------------------------------| | P55C | Open | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU VOLTAGE SELECTION | |------------------------------------------------------------| | Voltage | JP27 | |----------------------------+-------------------------------| | 3.4v | Pins 1 & 2 closed | |----------------------------+-------------------------------| | 3.5v | Pins 2 & 3 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | SERIAL PORT 2 SELECTION | |------------------------------------------------------------| | Setting | JP35 | JP36 | |--------------------+-------------------+-------------------| | Used as COM2/4 | Pins 1 & 2 closed | Pins 1 & 2 closed | |--------------------+-------------------+-------------------| | Used as IR | Pins 2 & 3 closed | Pins 2 & 3 closed | | connector | | | +------------------------------------------------------------+