BCM ADVANCED RESEARCH, INC. SILVER II AS500LP Processor 80486SX/80487SX/80486DX/80486DX2/ODP586SX Processor Speed 20/25/33/40/50(internal)/50/66(internal)MHz Chip Set SIS Max. onboard 64MB DRAM Cache 64/128/256KB BIOS AMI Dimensions 330mm x 218mm I/O Options 32-bit VESA riser card slot, floppy drive interface, ISA riser card slot, parallel port, PS/2 mouse port, PS/2 keyboard port, serial ports (2), VGA port NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location VGA port C1 Power LED & keylock J1 Parallel port C2 Turbo LED J3 Serial port C3 Turbo switch J4 Serial port C4 Reset switch J5 PS/2 mouse C5 Speaker J9 PS/2 keyboard C6 ISA riser card slot S1 IDE interface C7 32-bit VESA riser S2 card slot Floppy drive interface C8 USER CONFIGURABLE SETTINGS Function Jumper Position » Monitor type select color JP6 Open Monitor type select monochrome JP6 Closed » CMOS memory normal operation JP7 Open CMOS memory clear JP7 Closed » Power good signal detect from JP8 pins 1 & 2 board closed Power good signal detect from JP8 pins 2 & 3 power supply closed » Factory configured - do not alter JP14 pins 2 & 3 closed » Factory configured - do not alter JP15 pins 2 & 3 closed » PQFP 80486SX disabled JP102 pins 1 & 2 closed PQFP 80486SX enabled JP102 pins 2 & 3 closed » PS/2 mouse port enabled JP103 pins 1 & 2 closed PS/2 mouse port disabled JP103 pins 2 & 3 closed » IDE interface enabled S1 pins 1 & 2 closed IDE interface disabled S1 pins 2 & 3 closed » Factory configured - do not alter S2 pins 1 & 2 closed » Factory configured - do not alter S3 pins 1 & 2 closed » Factory configured - do not alter S4 pins 2 & 3 closed I/O JUMPER CONFIGURATION Floppy(C8) C3 C4 C2 JP20 JP19 JP18 JP17 JP16 Enabled COM1 COM2 LPT2 1 & 2 & 2 & 1 & 1 & 2 3 3 2 2 Enabled COM1 COM2 LPT1 1 & 2 & 2 & 1 & 2 & 2 3 3 2 3 Enabled COM3 COM4 LPT1 1 & 2 & 2 & 2 & 1 & 2 3 3 3 2 Enabled COM2 COM3 LPT2 1 & 2 & 2 & 2 & 2 & 2 3 3 3 3 Disabled COM1 COM2 LPT2 2 & 1 & 2 & 1 & 1 & 3 2 3 2 2 Disabled COM1 COM2 LPT1 2 & 1 & 2 & 1 & 2 & 3 2 3 2 3 Disabled COM3 COM4 LPT1 2 & 1 & 2 & 2 & 1 & 3 2 3 3 2 Disabled COM2 COM3 LPT2 2 & 1 & 2 & 2 & 2 & 3 2 3 3 3 Enabled Disabled Disabled Disabled 2 & 2 & 2 & 2 & 1 & 3 3 3 3 2 Disabled Disabled Disabled Disabled 2 & 2 & 2 & 2 & 2 & 3 3 3 3 3 Note:Pins designated should be in the closed position. ONBOARD VGA JUMPER CONFIGURATION Onboard VGA port T2JP1 T2JP2 T2JP3 Enabled pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed Disabled pins 3 & 4 pins 3 & 4 pins 3 & 4 closed closed closed VGA WAIT STATE CONFIGURATION Wait State JP12 JP13 0 (25MHz) pins 2 & 3 closed pins 2 & 3 closed 1 (33MHz) pins 2 & 3 closed pins 1 & 2 closed 2 (40MHz) pins 1 & 2 closed pins 2 & 3 closed 3 (50MHz) pins 1 & 2 closed pins 1 & 2 closed DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank3 JP100 JP101 1MB 256K x NONE NONE NONE Open Open 36 2MB 256K x 256K x NONE NONE Open Open 36 36 2MB 512K x NONE NONE NONE pins 1 & Open 36 2 4MB 1M x 36 NONE NONE NONE Open Open 6MB 256K x 256K x 1M x 36 NONE Open Open 36 36 6MB 512K x NONE 1M x 36 NONE pins 1 & Open 36 2 8MB 1M x 36 1M x 36 NONE NONE Open Open 8MB 2M x 36 NONE NONE NONE pins 1 & Open 2 10MB 256K x 256K x 1M x 36 1M x 36 Open Open 36 36 10MB 512K x NONE 1M x 36 1M x 36 pins 1 & Open 36 2 12MB 1M x 36 1M x 36 1M x 36 NONE Open Open 12MB 2M x 36 NONE 1M x 36 NONE pins 1 & Open 2 16MB 1M x 36 1M x 36 1M x 36 1M x 36 Open Open 16MB 2M x 36 NONE 1M x 36 1M x 36 pins 1 & Open 2 16MB 2M x 36 2M x 36 NONE NONE pins 2 & Closed 3 16MB 4M x 36 NONE NONE NONE Open Open 18MB 256K x 256K x 256K x NONE Open Open 36 36 36 18MB 512K x NONE 4M x 36 NONE pins 1 & Open 36 2 20MB 1M x 36 4M x 36 NONE NONE Open Open 24MB 1M x 36 1M x 36 4M x 36 NONE Open Open 24MB 2M x 36 NONE 4M x 36 NONE pins 1 & Open 2 32MB 4M x 36 4M x 36 NONE NONE Open Open 32MB 8M x 36 NONE NONE NONE pins 1 & Open 2 36MB 1M x 36 4M x 36 4M x 36 NONE Open Open 40MB 1M x 36 1M x 36 4M x 36 4M x 36 Open Open 40MB 2M x 36 NONE 4M x 36 4M x 36 pins 1 & Open 2 40MB 2M x 36 8M x 36 NONE NONE pins 2 & Closed 3 48MB 4M x 36 4M x 36 4M x 36 NONE Open Open 48MB 8M x 36 NONE 4M x 36 NONE pins 1 & Open 2 64MB 4M x 36 4M x 36 4M x 36 4M x 36 Open Open 64MB 8M x 36 8M x 36 NONE NONE pins 2 & Closed 3 64MB 8M x 36 NONE 4M x 36 4M x 36 pins 1 & Open 2 Note:Pins designated should be in the closed position. CACHE CONFIGURATION Size Cache Location 64KB (8) 8K x 8 Banks 0 & 1 128KB (4) 32K x 8 Bank 0 256KB (8) 32K x 8 Banks 0 & 1 CACHE JUMPER CONFIGURATION Size SR1 SR2 SR3 SR4 SR5 64KB pins 1 & pins 1 & pins 2 & pins 1 & pins 1 & 2 2 2 3 2 128KB pins 1 & pins 2 & pins 1 & pins 1 & pins 2 & 3 2 3 2 2 256KB pins 2 & pins 2 & pins 2 & pins 2 & pins 2 & 3 3 3 3 3 CPU TYPE CONFIGURATION Jumper 80486DX/80486DX2 80486SX 80487SX/ODP586SX T3JP1A Closed Open Open T3JP1B Open Closed Open T3JP1C Open Open Closed T3JP2A Closed Open Open T3JP2B Open Closed Open T3JP2C Open Open Closed T3JP3A Closed Open Open T3JP3B Open Closed Open T3JP3C Open Open Closed CPU SPEED CONFIGURATION CPU speed JP1 JP2 JP3 JP4 20MHz pins 2 & 3 pins 2 & 3 pins 2 & 3 pins 2 & 3 25/50i MHz pins 2 & 3 pins 2 & 3 pins 1 & 2 pins 1 & 2 33/66i MHz pins 1 & 2 pins 2 & 3 pins 1 & 2 pins 1 & 2 40MHz pins 1 & 2 pins 1 & 2 pins 2 & 3 pins 2 & 3 50MHz pins 2 & 3 pins 2 & 3 pins 1 & 2 pins 2 & 3 VESA LOCAL BUS CONFIGURATION CPU speed Wait states JP9 JP10 <=33MHz 0 wait states pins 1 & 2 pins 1 & 2 closed closed >33MHz 1 wait state pins 2 & 3 pins 2 & 3 closed closed