COMPAQ COMPUTER CORPORATION PRESARIO 700/900 SERIES Processor 80486SX2/80486DX/80486DX2/80486DX4/Pentium Overdrive Processor 25/33/50(internal)/66(internal)/75(internal)/100(internal)MHz Speed Chip Set Compaq Max. 100MB Onboard DRAM Cache 128KB (on external cache card) BIOS Unidentified Dimensions 330mm x 218mm I/O External cache card, game port, parallel port, PS/2 mouse port, Options serial ports (2), VGA feature connector, line in port, line out port, microphone port, VGA port, CD-ROM line in, TV board line in NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location Parallel port CN1 VGA port CN10 Game port CN2 Serial port 2 J2 Line in port CN3 Video upgrade J4 & J6 interface Line out port CN4 CD-ROM line in J10 Microphone port CN5 External battery J11 Speaker CN6 TV board line in J16 PS/2 mouse port CN7 VGA feature connector J20 Keyboard CN8 External cache card SL1 Serial port 1 CN9 USER CONFIGURABLE SETTINGS Function Jumper Position » Factory configured - do not J7 Open alter » Cache type select write through P3 pins 1 & 2 closed Cache type select write back P3 pins 2 & 3 closed » CMOS memory normal operation P5 Closed CMOS memory clear P5 Open DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 4MB (8) 411000 NONE NONE NONE 8MB (8) 411000 (1) 1M x 36 NONE NONE 12MB (8) 411000 (1) 1M x 36 (1) 1M x 36 NONE 12MB (8) 411000 (1) 2M x 36 NONE NONE 16MB (8) 411000 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 16MB (8) 411000 (1) 1M x 36 (1) 2M x 36 NONE 16MB (8) 411000 (1) 2M x 36 (1) 1M x 36 NONE 20MB (8) 411000 (1) 2M x 36 (1) 1M x 36 (1) 1M x 36 20MB (8) 411000 (1) 2M x 36 (1) 2M x 36 NONE 20MB (8) 411000 (1) 4M x 36 NONE NONE 24MB (8) 411000 (1) 1M x 36 (1) 2M x 36 (1) 2M x 36 24MB (8) 411000 (1) 1M x 36 (1) 4M x 36 NONE 24MB (8) 411000 (1) 4M x 36 (1) 1M x 36 NONE 28MB (8) 411000 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 28MB (8) 411000 (1) 2M x 36 (1) 4M x 36 NONE 28MB (8) 411000 (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 28MB (8) 411000 (1) 4M x 36 (1) 2M x 36 NONE 36MB (8) 411000 (1) 4M x 36 (1) 2M x 36 (1) 2M x 36 36MB (8) 411000 (1) 8M x 36 NONE NONE 40MB (8) 411000 (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 40MB (8) 411000 (1) 1M x 36 (1) 8M x 36 NONE 40MB (8) 411000 (1) 8M x 36 (1) 1M x 36 NONE 44MB (8) 411000 (1) 2M x 36 (1) 4M x 36 (1) 4M x 36 44MB (8) 411000 (1) 2M x 36 (1) 8M x 36 NONE 44MB (8) 411000 (1) 8M x 36 (1) 1M x 36 (1) 1M x 36 44MB (8) 411000 (1) 8M x 36 (1) 2M x 36 NONE 52MB (8) 411000 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 52MB (8) 411000 (1) 4M x 36 (1) 8M x 36 NONE 52MB (8) 411000 (1) 8M x 36 (1) 2M x 36 (1) 2M x 36 52MB (8) 411000 (1) 8M x 36 (1) 4M x 36 NONE 68MB (8) 411000 (1) 4M x 36 (1) 4M x 36 NONE 68MB (8) 411000 (1) 8M x 36 (1) 4M x 36 (1) 4M x 36 68MB (8) 411000 (1) 8M x 36 (1) 8M x 36 NONE 72MB (8) 411000 (1) 1M x 36 (1) 8M x 36 (1) 8M x 36 76MB (8) 411000 (1) 2M x 36 (1) 8M x 36 (1) 8M x 36 84MB (8) 411000 (1) 4M x 36 (1) 8M x 36 (1) 8M x 36 100MB (8) 411000 (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 Note: Bank 0 is factory installed 4MB and is not configurable. CPU SPEED CONFIGURATION Speed P1 25MHz pins 1 & 2 closed 33MHz pins 2 & 3 closed 50iMHz pins 1 & 2 closed 66iMHz pins 2 & 3 closed 75iMHz pins 1 & 2 closed 100iMHz pins 2 & 3 closed CPU CLOCK SPEED CONFIGURATION (80486DX4) Speed P4 2.0x pins 2 & 3 closed 2.5x pins 1 & 2 closed 3.0x pins 3 & 4 closed