MICRONICS COMPUTERS, INC. EISA-3 SYSTEM BOARD Processor 80486SX/80486DX/ODP486SX/80486DX2 Processor Speed 25/33/50(internal)/50/66(internal)MHz Chip Set Micronics Max. Onboard DRAM64MB Cache 64/128/256/512KB BIOS Phoenix Dimensions 330mm x 218mm I/O Options None NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location External battery J3 Power LED & keylock J11 Turbo LED J5 Speaker J13 Turbo switch J8 External keyboard J23 connector Reset switch J9 USER CONFIGURABLE SETTINGS Function Jumper Position » Monitor type select color J12 Closed Monitor type select monochrome J12 Open » Factory configured - do not alter J25 Open DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 4MB (1) 1M x 36 NONE NONE NONE 8MB (1) 1M x 36 (1) 1M x 36 NONE NONE 12MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 NONE 16MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 16MB (1) 4M x 36 NONE NONE NONE 20MB (1) 1M x 36 (1) 4M x 36 NONE NONE 24MB (1) 1M x 36 (1) 1M x 36 (1) 4M x 36 NONE 32MB (1) 4M x 36 (1) 4M x 36 NONE NONE 36MB (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 NONE 40MB (1) 1M x 36 (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 48MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 NONE 64MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 CACHE CONFIGURATION Size Bank 0 Bank TAG/U101 TAG/U102 TAG/U103 TAG/U104 1 64KB (4) 8K (4) NONE NONE (1) 64K x (1) 32K x x 8 8K x 1 8 8 128KB (4) NONE NONE NONE (1) 64K x (1) 32K x 32K x 1 8 8 256KB (4) (4) (1) 16K x (1) 16K x (1) 64K x NONE 32K x 32K x 4 4 1 8 8 512KB (4) NONE NONE NONE (1) 64K x (1) 32K x 128K x 1 8 8 CACHE JUMPER CONFIGURATION Size J15 J16 J17 J18 J19 J20 J21 J22 64KB 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 3 & 4 128KB 2 & 3 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 1 & 2 4 & 5 256KB 2 & 3 2 & 3 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 512KB 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 1 & 2 4 & 5 Note:Pins designated should be in the closed position. CPU SPEED CONFIGURATION Speed J7 J10 25MHz Closed Closed 33MHz Open Closed 50i MHz Closed Closed 50MHz Open Open 66i MHz Open Closed CPU TYPE CONFIGURATION U1 U2 JP1 JP2 JP3 80486SX NONE pins 1 & 2 pins 3 & 4 pins 2 & 3 closed closed closed NONE 80486SX pins 1 & 2 pins 3 & 4 pins 2 & 3 closed closed closed NONE 80486DX pins 2 & 3 pins 1 & 2 pins 1 & 2 and closed closed 3 & 4 closed NONE 80486DX2 pins 2 & 3 pins 1 & 2 pins 1 & 2 and closed closed 3 & 4 closed 80486SX 80487SX pins 1 & 2 pins 1 & 2 pins 1 & 2 and closed closed 3 & 4 closed 80486SX 80486DX pins 2 & 3 pins 1 & 2 pins 1 & 2 and closed closed 3 & 4 closed 80486SX 80486DX2 pins 2 & 3 pins 1 & 2 pins 1 & 2 and closed closed 3 & 4 closed 80486SX ODP486SX pins 1 & 2 pins 2 & 3 pins 1 & 2 and closed closed 3 & 4 closed