TYAN COMPUTER CORPORATION 486VL EISA VESA LOCAL BUS (REV. 1.0) Processor 80486SX/80487SX/80486DX/80486DX2 Processor Speed 20/25/33/50 (Internal)/50/66 (Internal)MHz Chip Set SIS Max. Onboard DRAM 256MB Cache 64/128/256/512/1024KB BIOS AMI Dimensions 330mm x 220mm I/O Options 32-bit VESA local bus slots (2) NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Power LED & keylock JP20 Turbo switch JP23 Speaker JP21 Turbo LED JP24 Reset switch JP22 32-bit VESA Local S1 & S2 bus slots USER CONFIGURABLE SETTINGS Function Jumper/Switch Position » Factory configured - do not JP18 Open alter DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 4MB (4) 1M x 9 NONE NONE NONE 8MB (4) 1M x 9 (4) 1M x 9 NONE NONE 12MB (4) 1M x 9 (4) 1M x 9 (4) 1M x 9 NONE 16MB (4) 1M x 9 (4) 1M x 9 (4) 1M x 9 (4) 1M x 9 16MB (4) 4M x 9 NONE NONE NONE 20MB (4) 1M x 9 (4) 4M x 9 NONE NONE 24MB (4) 1M x 9 (4) 1M x 9 (4) 4M x 9 NONE 28MB (4) 1M x 9 (4) 1M x 9 (4) 1M x 9 (4) 4M x 9 32MB (4) 4M x 9 (4) 4M x 9 NONE NONE 36MB (4) 1M x 9 (4) 4M x 9 (4) 4M x 9 NONE 40MB (4) 1M x 9 (4) 1M x 9 (4) 4M x 9 (4) 4M x 9 48MB (4) 4M x 9 (4) 4M x 9 (4) 4M x 9 NONE 52MB (4) 1M x 9 (4) 4M x 9 (4) 4M x 9 (4) 4M x 9 64MB (4) 4M x 9 (4) 4M x 9 (4) 4M x 9 (4) 4M x 9 64MB (4) 16M x 9 NONE NONE NONE 128MB (4) 16M x 9 (4) 16M x 9 NONE NONE 192MB (4) 16M x 9 (4) 16M x 9 (4) 16M x 9 NONE 256MB (4) 16M x 9 (4) 16M x 9 (4) 16M x 9 (4) 16M x 9 CACHE CONFIGURATION Size Bank 0 Bank 1 TAG (U15) TAG (U16) 64KB (4) 8K x 8 (4) 8K x 8 (1) 8K x 8 NONE 128KB (4) 32K x 8 Bank 0 (1) 8K x 8 NONE 256KB (4) 32K x 8 (4) 32K x (1) 8K x 8 NONE 8 512KB (8) 32K x 8 (8) 32K x (1) 32K x 8 NONE 8 1024KB (8) 128K x NONE (1) 32K x 8 (1) 32K x 8 8 CACHE JUMPER CONFIGURATION Size JP5 JP6 JP7 JP8 JP9 JP10 JP12 JP13 JP14 64KB Open Open Open 2 & 1 & 1 & Open 2 & 1 & 3 2 2 3 2 128KB Closed Open Open 2 & 1 & 1 & Open 1 & 1 & 3 2 2 2 2 256KB Closed Closed Open 2 & 2 & 1 & Open 2 & 2 & 3 3 2 3 3 512KB Closed Closed Closed 2 & 1 & 1 & 1 & 1 & 1 & 3 2 2 2 2 2 1024KB Closed Closed Closed 1 & 1 & 2 & 2 & 2 & 2 & 2 2 3 3 3 3 Note:Pins designated should be in the closed position. CPU TYPE CONFIGURATION Type JP1 JP2 80486SX Pins 1 & 2 closed pins 2 & 3 closed 80487SX Pins 1 & 2 closed pins 2 & 3 closed 80486DX Pins 2 & 3 closed pins 1 & 2, 3 & 4 closed 80486DX2 Pins 2 & 3 closed pins 1 & 2, 3 & 4 closed CPU SPEED CONFIGURATION Speed JP16 £ 33MHz pins 2 & 3 closed > 33MHz pins 1 & 2 closed