BIOSTAR MICROTECH INTERNATIONAL CORPORATION MB-8500SAC Processor CX M1/AM K5/Pentium Processor Speed 75/90/100/120/133/150/166/180MHz Chip Set Unidentified Video Chip Set SIS Maximum Onboard 128MB (EDO supported) Memory Maximum Video Memory None Cache 256/512/1024KB BIOS Award Dimensions 280mm 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), feature connector, audio connector NPU Options None [Image] CONNECTIONS Function Label Function Label PS/2 mouse port J6 Audio connector J20 VGA IDC connector J7 Chassis fan power JP12 VGA D type connector J8 Speaker JP14 pins 1 - 4 Feature connector J10 Power LED & keylock JP14 pins 5 - 9 Serial port 2 J11 Turbo LED JP14 pins 10 & 11 Floppy drive J12 Reset switch JP14 pins 12 interface & 13 Serial port 1 J13 Green PC connector JP14 pins 17 & 18 Parallel port J14 IDE interface LED JP14 pins 20 & 21 IDE interface 1 J15 VCC ground JP14 pins 25 connector & 26 IDE interface 2 J16 32-bit PCI slots PC1 - PC3 External battery J18 Note: J6, J7 and J8 are optional. Only one will be installed where J6 is shown. USER CONFIGURABLE SETTINGS Setting Label Position Jumper information unavailable J2 N/A Jumper information unavailable JP4 Unidentified » CMOS memory normal operation J18 Open CMOS memory clear J18 Pins 3 & 4 closed Battery type select external J18 Closed » Jumper information unavailable J19 Unidentified » Factory configured - do not JP2 Unidentified alter » Battery type select internal JP9 Closed Battery type select external JP9 Open Flash BIOS voltage select 12v JP10 Pins 1 & 2 closed Flash BIOS voltage select 5v JP10 Pins 2 & 3 closed Flash BIOS EPROM or 0v flash JP10 Open DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 4MB (1) 1M x 36 None None None 8MB (1) 2M x 36 None None None 8MB (1) 1M x 36 (1) 1M x 36 None None 12MB (1) 2M x 36 (1) 1M x 36 None None 12MB (1) 1M x 36 (1) 2M x 36 None None 16MB (1) 4M x 36 None None None 16MB (1) 2M x 36 (1) 2M x 36 None None 16MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 20MB (1) 4M x 36 (1) 1M x 36 None None 20MB (1) 2M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 20MB (1) 1M x 36 (1) 4M x 36 None None 24MB (1) 4M x 36 (1) 2M x 36 None None 24MB (1) 2M x 36 (1) 4M x 36 None None 28MB (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 28MB (1) 1M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 32MB (1) 8M x 36 None None None 32MB (1) 4M x 36 (1) 4M x 36 None None 32MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 36MB (1) 8M x 36 (1) 1M x 36 None None 36MB (1) 1M x 36 (1) 8M x 36 None None 40MB (1) 8M x 36 (1) 2M x 36 None None 40MB (1) 4M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 40MB (1) 2M x 36 (1) 8M x 36 None None 44MB (1) 8M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 48MB (1) 8M x 36 (1) 4M x 36 None None 48MB (1) 4M x 36 (1) 8M x 36 None None 100MB (1) 1M x 36 (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 104MB (1) 2M x 36 (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 112MB (1) 4M x 36 (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 128MB (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 Note: Board accepts EDO memory. CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 256KB (A) None (2) 32K x 32 None 256KB (B) (8) 32K x 8 None (1) 8K x 8 512KB (8) 64K x 8 None (1) 32K x 8 1MB (8) 128K x 8 None (1) 32K x 8 Note: Board will either have asynchronous or synchronous pipeline burst cache installed. CACHE JUMPER CONFIGURATION Size JP6 256KB (B) Open 512KB Pins 1 & 2 closed 1MB Pins 1 & 2, 3 & 4 closed CPU TYPE SELECTION Type JP15 JP16 P54C/CQS/CT Pins 1 & 2, 3 & 4 Pins 1 & 2 closed closed P55C/CT Open Pins 2 & 3 closed CPU TYPE SELECTION Type JP15 JP16 P54C/CQS/CT Pins 1 & 2, 3 & 4 Pins 1 & 2 closed closed P55C/CT Open Pins 2 & 3 closed CPU SPEED SELECTION Speed JP7 JP8 JP11 75MHz Open Closed Open 90MHz Closed Open Open 100MHz Open Open Open 120MHz Closed Open Pins 1 & 2 closed 133MHz Open Open Pins 1 & 2 closed 150MHz Closed Open Pins 1 & 2, 3 & 4 closed 166MHz Open Open Pins 1 & 2, 3 & 4 closed 180MHz Closed Open Pins 3 & 4 closed CPU VOLTAGE SELECTION Voltage JP13 3.4v (VRE CPU) Pins 1 & 2 closed 3.5v (VR CPU) Pins 2 & 3 closed CPU VOLTAGE SELECTION Voltage JP16 3.3v (P55C/CT) Pins 2 & 3 closed 5v (P54C/CQS/CT) Pins 1 & 2 closed MISCELLANEOUS TECHNICAL NOTE Depending on board version, a VGA D type port or a serial port could be installed where J6 is shown.