ARNOS INSTRUMENTS & COMPUTER SYSTEMS, INC. A486-25/33/50C Processor 80486SX/80487SX/80486DX/80486DX2 Processor Speed 25/33/50(internal)/50/66(internal)MHz Chip Set AIC Max. Onboard DRAM 64MB Cache 64/128/256/512/1024KB BIOS AMI/Phoenix Dimensions 264mm x 219mm I/O Options None NPU Options 4167 [Image] CONNECTIONS Purpose Location Purpose Location External battery X8 Turbo switch X15 Reset switch X13 Speaker X16 Turbo LED X14 Power LED & keylock X17 USER CONFIGURABLE SETTINGS Function Jumper Position » Battery select internal S3 pins 1 & 2 closed Battery select external S3 pins 2 & 3 closed » Battery type select 5VDC or less S4 pins 1 & 2 closed Battery type select greater than S4 pins 2 & 3 5VDC closed » External cache enabled S5 open External cache disabled S5 closed » CPU speed select iOSC/2 S7 pins 1 & 2 closed CPU speed select iOSC/1 S7 pins 2 & 3 closed » Monitor type select color S8 closed Monitor type select monochrome S8 open CPU TYPE CONFIGURATION CPU Type S6 S9 80486DX2 pins 1 & 2 closed pins 1 & 2 and 3 & 4 closed 80486DX pins 1 & 2 closed pins 1 & 2 and 3 & 4 closed 80487SX pins 2 & 3 closed pins 1 & 2 and 3 & 4 closed 80486SX open pins 2 & 3 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 32MB (4) 4M x 9 (4) 4M x 9 64MB (4) 16M x 9 NONE CACHE JUMPER CONFIGURATION Size S1 S2 S10 S12 S13 64KB pins 1 & pins 1 & pins 1 & pins 1 & pins 1 & 2 2 2 2 2 128KB pins 2 & pins 1 & pins 2 & pins 1 & pins 2 & 3 2 3 2 3 256KB pins 2 & pins 1 & pins 2 & pins 2 & pins 1 & 3 2 3 3 2 512KB pins 2 & pins 2 & pins 2 & pins 2 & pins 1 & 3 3 3 3 2 1024KB pins 2 & pins 2 & pins 2 & pins 2 & pins 2 & 3 3 3 3 3 Note:Pins designated should be in the closed position. CACHE CONFIGURATION Size Cache Location TAG 64KB (8) 8K x 8 Banks 0 & 1 (2) 8K x 8 128KB (4) 32K x 8 Bank 0 (2) 8K x 8 256KB (8) 32K x 8 Banks 0 & 1 (2) 32K x 8 512KB (4) 128K x 8 Bank 0 (2) 32K x 8 1024KB (8) 128K x 8 Banks 0 & 1 (2) 128K x 8