RELIALOGIC CORPORATION PRIVATE, LTD. R486 SX25MBC, R486 DX33MBC, R486 DX50MBC, R486 DX2-50MBC, R486 DX2-66MBC Processor 80486SX/80487SX/80486DX/80486DX2 Processor Speed 25/33/50(internal)/66(internal)MHz Chip Set UMC Max. Onboard DRAM 32MB Cache 64/128/256KB BIOS AMI Dimensions 330mm x 218mm I/O Options None NPU Options 4167 [Image] CONNECTIONS Purpose Location Purpose Location Power LED & keylock J1 Reset switch J4 Speaker J2 Turbo LED J5 Turbo switch J3 External battery J6 USER CONFIGURABLE SETTINGS Function Jumper Position » Battery type select - internal W22 Closed Battery type select - external W22 Open » Monitor type select W18 Open monochrome/EGA/VGA Monitor type select CGA W18 Closed DRAM CONFIGURATION Size A B C D 1MB (4) 256K x 9 NONE NONE NONE 2MB (4) 256K x 9 (4) 256K x 9 NONE NONE 3MB (4) 256K x 9 (4) 256K x 9 (1) 256K x NONE 36 4MB (4) 256K x 9 (4) 256K x 9 (1) 256K x (1) 256K x 36 36 4MB (4) 1M x 9 NONE NONE NONE 5MB (4) 256K x 9 (4) 1M x 9 NONE NONE 6MB (4) 256K x 9 (4) 256K x 9 (1) 1M x 36 NONE 8MB (4) 1M x 9 (4) 1M x 9 NONE NONE 9MB (4) 256K x 9 (4) 1M x 9 (1) 1M x 36 NONE 10MB (4) 256K x 9 (4) 256K x 9 (1) 1M x 36 (1) 1M x 36 12MB (4) 1M x 9 (4) 1M x 9 (1) 1M x 36 NONE 16MB (4) 1M x 9 (4) 1M x 9 (1) 1M x 36 (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) 4M x 9 (1) 1M x 36 NONE 32MB (4) 4M x 9 (4) 4M x 9 NONE NONE 40MB (4) 4M x 9 (4) 4M x 9 (1) 1M x 36 (1) 1M x 36 DRAM JUMPER CONFIGURATION Bank W12 W13 W15 W16 Bank 0 = A, Bank 1 = B, pins 1 & pins 1 & pins 1 & pins 1 & 2 Bank 2 = C, Bank 3 = D 2 2 2 Bank 0 = C, Bank 1 = D, pins 2 & pins 2 & pins 2 & pins 2 & 3 Bank 2 = A, Bank 3 = B 3 3 3 Note:Pins designated should be in the closed position. CACHE CONFIGURATION Size Bank 0 Bank 1 TAG U10 (Dirty Bit) 64KB (4) 8K x 8 (4) 8K x 8 (1) 8K x 8 (1) 16K x 4 128KB (4) 32K x 8 NONE (1) 8K x 8 (1) 16K x 4 256KB (4) 32K x 8 (4) 32K x 8 (1) 32K x 8 (1) 16K x 4 CACHE JUMPER CONFIGURATION Size W2 W3 W4 W5 W6 W7 W8 W9 64KB 1 & 1 & Open 1 & Open Open Open Open 2 2 2 128KB 2 & 1 & 1 & 2 2 & Closed Open Open Closed 3 2 3 256KB 2 & 2 & 2 & 3 1 & Closed Closed Closed Closed 3 3 2 Note:Pins designated should be in the closed position. CPU TYPE CONFIGURATION Type W10 W11 80486SX Open pins 2 & 3 closed 80487SX pins 2 & 3 closed pins 1 & 2, 3 & 4 closed 80486DX pins 1 & 2 closed pins 1 & 2, 3 & 4 closed 80486DX2 pins 1 & 2 closed pins 1 & 2, 3 & 4 closed