AST RESEARCH, INC. BRAVO LP (202536-0XX) Processor 80486SX/80487SX/80486DX/ODP486SX/80486DX2/Pentium Overdrive Processor 25/33/50(internal)/66(internal)MHz Speed Chip Set AST Max. Onboard 64MB DRAM Cache 64KB (with external cache card) BIOS AST Dimensions 330mm x 218mm I/O Options Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Front panel J2 IDE interface J22 connector PS/2 mouse port J12 Floppy drive J24 interface Parallel port J13 Speaker J27 Serial port 1 J14 Chassis fan power J28 Personality module J15, J16, IDE interface LED J40 connectors J46 VGA port J18 Cache module J50 - J53 connectors VGA feature J19 Riser Card SL1 connector Serial port 2 J20 USER CONFIGURABLE SETTINGS Function Jumper/Switch Position » CMOS memory normal operation E1 Open CMOS memory clear E1 Closed » Parallel port IRQ select E7 pins 1 & 2 IRQ7 closed Parallel port IRQ select E7 pins 2 & 3 IRQ5 closed » Factory configured - do not E9 Open alter » Factory configured - do not E800 pins 1 & 2 alter closed » Factory configured - do not E801 pins 2 & 3 alter closed » Power management enabled E802 pins 1 & 2 closed Power management disabled E802 pins 2 & 3 closed » Factory configured - do not E803 pins 1 & 2 alter closed » Factory configured - do not E804 pins 1 & 2 alter closed » On board video enabled SW1/1 Off On board video disabled SW1/1 On » POST type select normal SW1/2 Off POST type select loop SW1/2 On » Boot type select normal SW1/3 Off Boot type select flash BIOS SW1/3 On update » Password enabled SW1/4 Off Password disabled SW1/4 On » Monitor type select color SW1/5 On Monitor type select SW1/5 Off monochrome » Factory configured - do not SW1/6 Off alter » Factory configured - do not SW1/7 Off alter » System setup type select SW1/8 Off allow access System setup type select SW1/8 On deny access » Factory configured - do not SW1/9 Off alter » Factory configured - do not SW1/10 Off alter DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 1MB (1) 256K x NONE NONE NONE 36 2MB (1) 256K x (1) 256K x NONE NONE 36 36 3MB (1) 256K x (1) 256K x (1) 256K x NONE 36 36 36 4MB (1) 256K x (1) 256K x (1) 256K x (1) 256K x 36 36 36 36 4MB (1) 1M x 36 NONE NONE NONE 5MB (1) 1M x 36 (1) 256K x NONE NONE 36 6MB (1) 1M x 36 (1) 256K x (1) 256K x NONE 36 36 7MB (1) 1M x 36 (1) 256K x (1) 256K x (1) 256K x 36 36 36 8MB (1) 1M x 36 (1) 1M x 36 NONE NONE 9MB (1) 1M x 36 (1) 1M x 36 (1) 256K x NONE 36 10MB (1) 1M x 36 (1) 1M x 36 (1) 256K x (1) 256K x 36 36 12MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 NONE 13MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 256K x 36 16MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 DRAM CONFIGURATION (CON’T) 16MB (1) 4M x NONE NONE NONE 36 17MB (1) 4M x (1) 256K x NONE NONE 36 36 18MB (1) 4M x (1) 256K x (1) 256K x NONE 36 36 36 19MB (1) 4M x (1) 256K x (1) 256K x (1) 256K x 36 36 36 36 20MB (1) 4M x (1) 1M x 36 NONE NONE 36 21MB (1) 4M x (1) 1M x 36 (1) 256K x NONE 36 36 22MB (1) 4M x (1) 1M x 36 (1) 256K x (1) 256K x 36 36 36 24MB (1) 4M x (1) 1M x 36 (1) 1M x 36 NONE 36 25MB (1) 4M x (1) 1M x 36 (1) 1M x 36 (1) 256K x 36 36 28MB (1) 4M x (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 36 32MB (1) 4M x (1) 4M x 36 NONE NONE 36 33MB (1) 4M x (1) 4M x 36 (1) 256K x NONE 36 36 34MB (1) 4M x (1) 4M x 36 (1) 256K x (1) 256K x 36 36 36 36MB (1) 4M x (1) 4M x 36 (1) 1M x 36 NONE 36 37MB (1) 4M x (1) 4M x 36 (1) 1M x 36 (1) 256K x 36 36 40MB (1) 4M x (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 36 48MB (1) 4M x (1) 4M x 36 (1) 4M x 36 NONE 36 49MB (1) 4M x (1) 4M x 36 (1) 4M x 36 (1) 256K x 36 36 52MB (1) 4M x (1) 4M x 36 (1) 4M x 36 (1) 1M x 36 36 64MB (1) 4M x (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 36 CPU UPGRADE CONFIGURATION Type E2 E3 E4 E5 E6 None N/A N/A N/A N/A 2 & 3 80486SX Open Open 2 & 3 2 & 3 1 & 2 80487SX Closed 1 & 2 1 & 2 2 & 3 2 & 3 80486DX/DX2 Closed 2 & 3 1 & 2 2 & 3 1 & 2 Overdrive (ODPR) Closed 2 & 3 1 & 2 2 & 3 1 & 2 Overdrive (ODP) Closed 1 & 2 1 & 2 2 & 3 2 & 3 Overdrive (P24T) Closed 1 & 2 1 & 2 1 & 2 2 & 3 Note: Pins designated should be in the closed position. CPU SPEED CONFIGURATION Speed E8 25MHz Open 33MHz Closed 50iMHz Open 66iMHz Closed VIDEO MEMORY CONFIGURATION Size Bank 0 Bank 1 Bank 2 512KB (1) 256K x 16 NONE NONE 1MB (1) 256K x 16 (1) 256K x 16 NONE 2MB (1) 256K x 16 (1) 256K x 16 (2) 256K x 16 Note: Bank 0 is factory installed and is not configurable.