AST RESEARCH, INC. ADVANTAGE! PRO 486 (202560-000, 102) Processor 80486SX/80487SX/ODP486SX/80486DX/80486DX2/Pentium Overdrive Processor 25/33/50(internal)/66(internal)MHz Speed Chip Set Unidentified Max. Onboard 64MB DRAM Cache 64/256KB BIOS Unidentified Dimensions 355mm x 305mm I/O Options Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), 8514 video pass through connector, VGA port NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location VGA port CN1 IDE interface J22 Parallel port CN2 Floppy drive J24 interface Serial port CN3 Speaker J27 Serial port CN4 Chassis fan power J28 PS/2 mouse port CN5 Front panel J29 connector 8514 video pass J19 through connector Note: The location of J27 is unidentified. USER CONFIGURABLE SETTINGS Function Jumper Position » Monitor type select color E4 Closed Monitor type select monochrome E4 Open » On board video enabled E5 Closed On board video disabled E5 Open » Password enabled E6 Open Password disabled E6 Closed » Parallel port IRQ select IRQ7 E12 pins 1 & 2 closed Parallel port IRQ select IRQ5 E12 pins 2 & 3 closed DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 1MB (1) 256K x NONE NONE NONE 32 2MB (1) 256K x (1) 256K x NONE NONE 32 32 3MB (1) 256K x (1) 256K x (1) 256K x NONE 32 32 32 4MB (1) 1M x 32 NONE NONE NONE 4MB (1) 256K x (1) 256K x (1) 256K x (1) 256K x 32 32 32 32 5MB (1) 1M x 32 (1) 256K x NONE NONE 32 6MB (1) 1M x 32 (1) 256K x (1) 256K x NONE 32 32 7MB (1) 1M x 32 (1) 256K x (1) 256K x (1) 256K x 32 32 32 8MB (1) 1M x 32 (1) 1M x 32 NONE NONE 9MB (1) 1M x 32 (1) 1M x 32 (1) 256K x NONE 32 10MB (1) 1M x 32 (1) 1M x 32 (1) 256K x (1) 256K x 32 32 12MB (1) 1M x 32 (1) 1M x 32 (1) 1M x 32 NONE 13MB (1) 1M x 32 (1) 1M x 32 (1) 1M x 32 (1) 256K x 32 16MB (1) 4M x 32 NONE NONE NONE 16MB (1) 1M x 32 (1) 1M x 32 (1) 1M x 32 (1) 1M x 32 17MB (1) 4M x 32 (1) 256K x NONE NONE 32 18MB (1) 4M x 32 (1) 256K x (1) 256K x NONE 32 32 19MB (1) 4M x 32 (1) 256K x (1) 256K x (1) 256K x 32 32 32 20MB (1) 4M x 32 (1) 1M x 32 NONE NONE 21MB (1) 4M x 32 (1) 1M x 32 (1) 256K x NONE 32 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 22MB (1) 4M x 32 (1) 1M x 32 (1) 256K x (1) 256K x 32 32 24MB (1) 4M x 32 (1) 1M x 32 (1) 1M x 32 NONE 25MB (1) 4M x 32 (1) 1M x 32 (1) 1M x 32 (1) 256K x 32 28MB (1) 4M x 32 (1) 1M x 32 (1) 1M x 32 (1) 1M x 32 32MB (1) 4M x 32 (1) 4M x 32 NONE NONE 33MB (1) 4M x 32 (1) 4M x 32 (1) 256K x NONE 32 34MB (1) 4M x 32 (1) 4M x 32 (1) 256K x (1) 256K x 32 32 36MB (1) 4M x 32 (1) 4M x 32 (1) 1M x 32 NONE 37MB (1) 4M x 32 (1) 4M x 32 (1) 1M x 32 (1) 256K x 32 40MB (1) 4M x 32 (1) 4M x 32 (1) 1M x 32 (1) 1M x 32 48MB (1) 4M x 32 (1) 4M x 32 (1) 4M x 32 NONE 49MB (1) 4M x 32 (1) 4M x 32 (1) 4M x 32 (1) 256K x 32 52MB (1) 4M x 32 (1) 4M x 32 (1) 4M x 32 (1) 1M x 32 64MB (1) 4M x 32 (1) 4M x 32 (1) 4M x 32 (1) 4M x 32 CACHE CONFIGURATION Size Bank 0 TAG 64KB (8) 8K x 8 (1) 8K x 9 256KB (8) 32K x 8 (1) 32K x 9 CACHE JUMPER CONFIGURATION Size E1 E2 E3 None Open Open Open 64KB Open Open Open 256KB Closed Closed Closed CPU TYPE CONFIGURATION Type E11 E13 E14 E15 E16 E17 80486SX(PQFP) Open Open 1 & 2 1 & 2 1 & 2 1 & 2 80486SX(PGA) Closed Open 1 & 2 1 & 2 1 & 2 1 & 2 80487SX Closed Closed 1 & 2 1 & 2 2 & 3 1 & 2 ODP486SX Closed Closed 1 & 2 1 & 2 2 & 3 1 & 2 80486DX Closed Closed 2 & 3 1 & 2 2 & 3 1 & 2 80486DX2 Closed Closed 2 & 3 1 & 2 2 & 3 1 & 2 P24T Closed Closed 2 & 3 2 & 3 2 & 3 Open Note: Pins designated should be in the closed position. The location of the PQFP is unidentified. CPU SPEED CONFIGURATION Speed E9 E10 25MHz Closed Closed 33MHz Open Closed 50iMHz Closed Closed 66iMHz Open Closed VIDEO MEMORY CONFIGURATION Size Bank 0 Bank 1 512KB (4) 256K x 4 NONE 1MB (4) 256K x 4 (4) 256K x 4