MICROMEDIA TECHNOLOGIES, INC. 486-VLS Processor 80486SX/80486DX/80486DX2 Processor Speed 25/33/40/50(internal)/50/66(internal)MHz Chip Set SIS Max. Onboard DRAM32MB Cache 64/128/256KB BIOS AMI Dimensions 230mm x 218mm I/O Options 32-bit VESA local bus slots (2) NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Power LED & keylock CN1 Turbo switch CN5 Reset switch CN2 External battery CN6 Speaker CN3 32-bit VESA Local bus S1 slot Turbo LED CN4 32-bit VESA Local bus S2 slot USER CONFIGURABLE SETTINGS Function Jumper Position » 80486 (PQFP) JP16 Open 80486(PGA) JP16 Closed 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 8MB (4) 1M x 9 (4) 1M x 9 16MB (4) 4M x 9 NONE 20MB (4) 1M x 9 (4) 4M x 9 32MB (4) 4M x 9 (4) 4M x 9 CPU TYPE CONFIGURATION Type JP13 JP14 JP15 80486SX Open pins 2 & 3 Open closed 80487SX pins 2 & 3 pins 1 & 2 Closed closed closed 80486DX pins 1 & 2 pins 1 & 2 Closed closed closed 80486DX2 pins 1 & 2 pins 1 & 2 Closed closed closed CPU SPEED CONFIGURATION Type JP20 JP21 JP22 25MHz Closed Open Open 33MHz Closed Closed Closed 40MHz Closed Closed Open 50MHz Open Open Closed CACHE JUMPER CONFIGURATION Size JP1 JP2 JP3 JP4 JP5 JP6 JP7 64KB pins 1 pins 1 pins 1 pins 1 pins 2 N/A pins 1 & 2 & 2 & 2 & 2 & 3 & 2 128KB pins 2 pins 1 pins 2 pins 1 pins 1 pins 1 pins 2 & 3 & 2 & 3 & 2 & 2 & 2 & 3 256KB pins 2 pins 2 pins 2 pins 2 pins 2 pins 2 pins 2 & 3 & 3 & 3 & 3 & 3 & 3 & 3 Note: Pins designated should be in the closed position. VESA WAIT STATE/BUS SPEED (S1 & S2) CONFIGURATION CPU speed S1/JP8 S1/JP9 S2/JP10 S2/JP11 £ 33MHz pins 1 & 2 N/A pins 1 & 2 N/A closed closed > 33MHz pins 2 & 3 N/A pins 2 & 3 N/A closed closed 0 wait N/A pins 1 & 2 N/A pins 1 & 2 states closed closed 1 wait N/A pins 2 & 3 N/A pins 2 & 3 state closed closed