MICROMEDIA TECHNOLOGIES, INC. 486-VLA Processor 80486SX/80486DX/80486DX2 Processor Speed 25/33/40/50(internal)/50/66(internal)MHz Chip Set ALI Max. Onboard DRAM32MB Cache 64/128/256KB BIOS AMI Dimensions 230mm x 218mm I/O Options 32-bit VESA local bus slots (3) NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Speaker J1 External battery J6 Power LED & keylock J2 32-bit VESA Local bus S1 slot Reset switch J3 32-bit VESA Local bus S2 slot Turbo LED J4 32-bit VESA Local bus S3 slot Turbo switch J5 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 CACHE JUMPER CONFIGURATION Size JP21 JP22 JP23 JP24 64KB Pins 1 & 2 Pins 1 & 2 Open Pins 3 & 4 128KB Pins 2 & 3 Pins 1 & 2 Open Pins 1 & 2, 3 & 4 and 5 & 6 256KB Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 Pins 1 & 2, 3 & and 2 & 3 4 and 5 & 6 Note:Pins designated should be in the closed position. CPU SPEED CONFIGURATION Speed JP6 JP10 JP25/pins JP25/pins JP25/pins JP26 1&2 3&4 5&6 25MHz Pins Pins Open Closed Open Pins 1 1 & 2 1 & 2 & 2 33MHz Pins Pins Closed Open Closed Pins 1 1 & 2 1 & 2 & 2 40MHz Pins Pins Closed Closed Open Pins 2 2 & 3 2 & 3 & 3 50i Pins Pins Open Closed Open Pins 1 MHz 1 & 2 1 & 2 & 2 50MHz Pins Pins Open Closed Open Pins 2 2 & 3 2 & 3 & 3 66i Pins Pins Closed Open Closed Pins 1 MHz 1 & 2 1 & 2 & 2 Note:Pins designated should be in the closed position. CPU TYPE CONFIGURATION Type JP7 JP9 JP11 JP12 JP16 JP17 JP20 80486SX Pins Pins Closed Closed Pins N/A Pins 1 1 & 2 1 & 2 1 & 2 & 2 80487SX Pins Pins Closed Closed Pins Pins Pins 1 1 & 2 1 & 2 2 & 3 1 & 2 & 2 80487DX Pins Pins Closed Closed Pins Pins Pins 1 1 & 2 1 & 2 2 & 3 2 & 3 & 2 80486DX2 Pins Pins Open Open Pins N/A Pins 1 2 & 3 2 & 3 1 & 2 & 2 Note: Pins designated should be in the closed position. VESA WAIT STATE/BUS SPEED CONFIGURATION CPU speed Wait states JP1 JP2 £ 33MHz 0 wait states Pins 1 & 2 Pins 1 & 2 closed closed > 33MHz 1 wait state Pins 2 & 3 Pins 2 & 3 closed closed