YOUNG MICRO SYSTEMS, INC. VEGA 3-486 CACHE Processor 80386DX/80486SX/80487SX/80486DX/ODP486SX/80486DX2 Processor Speed 16/20/25/33/40/50/66(internal)MHz Chip Set Symphony Max. Onboard DRAM 32MB Cache 64/256KB BIOS AMI Dimensions 330mm x 218mm I/O Options None NPU Options 80387 [Image] CONNECTIONS Purpose Location Purpose Location Turbo switch C1 Power LED & keylock C4 Turbo LED C2 Speaker C5 Reset switch C3 DRAM CONFIGURATION Size Bank 0 Bank 1 1MB (4) 256K x 9 NONE 2MB (4) 256K x 9 (4) 256K x 9 4MB (4) 1M x 9 NONE 5MB (4) 1M x 9 (4) 256K x 9 8MB (4) 1M x 9 (4) 1M x 9 16MB (4) 4M x 9 NONE 32MB (4) 4M x 9 (4) 4M x 9 CACHE CONFIGURATION Size Bank 0 64KB (8) 8K x 8 256KB (8) 32K x 8 CACHE JUMPER CONFIGURATION Size P26 P27 P31 64KB pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed 256KB pins 2 & 3 pins 2 & 3 pins 2 & 3 closed closed closed CPU TYPE CONFIGURATION Type P24 P25 P28 P30 P32 80386DX 2 & 3 1 & 2 1 & 2 1 & 2 1 & 2 80486SX 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 80486DX-25 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 80486DX-33 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 80486DX-50 1 & 2 2 & 3 2 & 3 2 & 3 2 & 3 80486DX2-50 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 80486DX2-66 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 Note: Pins designated should be in the closed. CPU TYPE CONFIGURATION (CON'T) Type P33 P35 P36 P37 P38 80386DX 1 & 2 Closed Closed Open Open 80486SX 2 & 3 Open Open Open Open 80486DX-25 2 & 3 Open Open Open Open 80486DX-33 2 & 3 Open Open Open Open 80486DX-50 2 & 3 Open Open Closed Closed 80486DX2-50 2 & 3 Open Open Open Open 80486DX2-66 2 & 3 Open Open Open Open Note: Pins designated should be in the closed. CPU TYPE CONFIGURATION (CON'T) Type P39 P40 P41 P42 P43 P44 80386DX Closed N/A N/A N/A N/A 1 & 2 80486SX Open Open Open Open Closed 2 & 3 80486DX-25 Open Closed Closed Closed Open 2 & 3 80486DX-33 Open Closed Closed Closed Open 2 & 3 80486DX-50 Open Closed Closed Closed Open 2 & 3 80486DX2-50 Open Closed Closed Closed Open 2 & 3 80486DX2-66 Open Closed Closed Closed Open 2 & 3 Note: Pins designated should be in the closed.