AST RESEARCH, INC. ADVANTAGE! PLUS SERIES 486 (MYLEX) (202529-000, 006) Processor 80486SX/80487SX/ODP486/ODPR486/80486DX/80486DX2 Processor 25/33/50(internal)/66(internal)MHz Speed Chip Set Unidentified Max. Onboard 32MB DRAM Cache 64/256KB BIOS AMI Dimensions 330mm x 218mm I/O Options Floppy drive interface, IDE interface, parallel port, serial ports (2) NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Parallel port J1 Turbo LED JP3 Serial port 2 J2 Reset switch JP4 Serial port 1 J3 Speaker JP5 Floppy drive interface J4 IDE interface LED JP6 IDE interface J5 External battery JP22 Power LED & keylock JP2 USER CONFIGURABLE SETTINGS Function Jumper Position » Monitor type select color JP1 Closed Monitor type select monochrome JP1 Open » Factory configured - do not JP18 Open alter » Parallel port IRQ select IRQ7 JP19 Pins 2 & 3 closed Parallel port IRQ select IRQ5 JP19 Pins 1 & 2 closed » On board I/O enabled JP20 Pins 1 & 2 closed On board I/O disabled JP20 Pins 2 & 3 closed » Battery type select internal JP21 Pins 2 & 3 closed Battery type select external JP21 Open CMOS memory clear JP21 Pins 1 & 2 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 5MB (4) 1M x 9 (4) 256K x 9 8MB (4) 1M x 9 (4) 1M x 9 16MB (4) 4M x 9 None 20MB (4) 4M x 9 (4) 1M x 9 32MB (4) 4M x 9 (4) 4M x 9 CACHE CONFIGURATION Size Bank 0 TAG0 TAG1 64KB (8) 8K x 8 (1) 64K x 1 (1) 8K x 8 256KB (8) 32K x 8 (1) 64K x 1 (1) 32K x 8 CACHE JUMPER CONFIGURATION Size JP7 JP11 JP12 JP13 None Open Open Open Open 64KB Open Open Open Open 256KB Closed Closed Open Closed CPU TYPE CONFIGURATION Type JP8 JP9 JP10 80486SX Open Pins 2 & 3 Open closed 80487SX Pins 2 & 3 Pins 1 & 2 Closed closed closed odp486 Pins 2 & 3 Pins 1 & 2 Closed closed closed odpR486 Pins 1 & 2 Pins 1 & 2 Closed closed closed 80486DX Pins 1 & 2 Pins 1 & 2 Closed closed closed 80486DX2 Pins 1 & 2 Pins 1 & 2 Closed closed closed CPU SPEED CONFIGURATION Speed JP14 JP15 JP16 JP17 25MHz Pins 2 & 3 Pins 2 & 3 Pins 1 & 2 Pins 2 & 3 closed closed closed closed 33MHz Pins 2 & 3 Pins 1 & 2 Pins 1 & 2 Pins 2 & 3 closed closed closed closed 50iMHz Pins 2 & 3 Pins 2 & 3 Pins 1 & 2 Pins 2 & 3 closed closed closed closed 66iMHz Pins 2 & 3 Pins 1 & 2 Pins 1 & 2 Pins 2 & 3 closed closed closed closed