M TECHNOLOGY, INC. R418 PCI-486 Processor 80486SX/CX486DX/80486DX/AM486DX2/80486DX2/80486DX4/P24D/ Pentium Overdrive Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/ Speed 100(internal)MHz Chip Set Unidentified Max. 256MB Onboard DRAM Cache 128/256/512/1024KB BIOS Award Dimensions 330mm x 218mm I/O Parallel port, serial ports (2), 32-bit PCI slots (3), green PC Options connector, floppy drive interface, IDE interfaces (2) NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location Serial port 2 CN1 Turbo switch J3 Serial port 1 CN2 Turbo LED J4 Parallel port CN3 Reset switch J5 Floppy drive interface CN4 Break switch J6 IDE interface 2 CN5 IDE interface LED J7 IDE interface 1 CN6 Green PC connector J9 Power LED & keylock J1 32-bit PCI slots PC1 - PC3 Speaker J2 USER CONFIGURABLE SETTINGS Function Jumper Position » Serial port 1 IRQ select IRQ4 JP27 pins 1 & 2, 3 & 4 closed Serial port 2 IRQ select IRQ3 JP27 pins 1 & 2, 3 & 4 closed » Parallel port IRQ select IRQ7 JP28 pins 2 & 3 closed Parallel port IRQ select IRQ5 JP28 pins 1 & 2 closed » CMOS memory normal operation JP49 pins 1 & 2 closed CMOS memory clear JP49 pins 2 & 3 closed » Monitor type select monochrome JP51 Open Monitor type select color JP51 Closed DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 1MB (4) 256K x 9 NONE NONE NONE 1MB NONE NONE (1) 256K x NONE 36 2MB (4) 256K x 9 (4) 256K x 9 NONE NONE 2MB NONE NONE (1) 256K x (1) 256K x 36 36 2MB NONE NONE (1) 512K x NONE 36 3MB NONE NONE (1) 256K x (1) 512K x 36 36 3MB NONE NONE (1) 512K x (1) 256K x 36 36 4MB (4) 1M x 9 NONE NONE NONE 4MB NONE NONE (1) 512K x (1) 512K x 36 36 4MB NONE NONE (1) 1M x 36 NONE 5MB (4) 256K x 9 (4) 1M x 9 NONE NONE 5MB (4) 1M x 9 (4) 256K x 9 NONE NONE 5MB (4) 256K x 9 NONE (1) 1M x 36 NONE 5MB NONE NONE (1) 256K x (1) 1M x 36 36 5MB NONE NONE (1) 1M x 36 (1) 256K x 36 6MB (4) 1M x 9 NONE (1) 256K x (1) 256K x 36 36 6MB NONE NONE (1) 512K x (1) 1M x 36 36 6MB NONE NONE (1) 1M x 36 (1) 512K x 36 7MB (4) 256K x 9 (4) 256K x 9 (1) 1M x 36 (1) 256K x 36 8MB (4) 1M x 9 (4) 1M x 9 NONE NONE 8MB (4) 1M x 9 (4) 256K x 9 (1) 256K x (1) 512K x 36 36 8MB NONE NONE (1) 1M x 36 (1) 1M x 36 8MB NONE NONE (1) 2M x 36 NONE 9MB NONE NONE (1) 256K x (1) 2M x 36 36 9MB NONE NONE (1) 2M x 36 (1) 256K x 36 10MB NONE NONE (1) 512K x (1) 2M x 36 36 10MB NONE NONE (1) 2M x 36 (1) 512K x 36 11MB (4) 256K x 9 (4) 1M x 9 (1) 1M x 36 (1) 512K x 36 12MB NONE NONE (1) 1M x 36 (1) 2M x 36 12MB NONE NONE (1) 2M x 36 (1) 1M x 36 13MB (4) 1M x 9 (4) 1M x 9 (1) 256K x (1) 1M x 36 36 16MB (4) 4M x 9 NONE NONE NONE 16MB NONE NONE (1) 2M x 36 (1) 2M x 36 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 16MB NONE NONE (1) 4M x 36 NONE 17MB (4) 256K x 9 (4) 4M x 9 NONE NONE 17MB (4) 4M x 9 (4) 256K x 9 NONE NONE 17MB NONE NONE (1) 256K x (1) 4M x 36 36 17MB NONE NONE (1) 4M x 36 (1) 256K x 36 18MB NONE NONE (1) 512K x (1) 4M x 36 36 18MB NONE NONE (1) 4M x 36 (1) 512K x 36 20MB (4) 1M x 9 (4) 4M x 9 NONE NONE 20MB (4) 4M x 9 (4) 1M x 9 NONE NONE 20MB NONE NONE (1) 1M x 36 (1) 4M x 36 20MB NONE NONE (1) 4M x 36 (1) 1M x 36 22MB (4) 4M x 9 (4) 1M x 9 (1) 512K x NONE 36 24MB NONE NONE (1) 2M x 36 (1) 4M x 36 24MB NONE NONE (1) 4M x 36 (1) 2M x 36 25MB (4) 256K x 9 (4) 4M x 9 (1) 1M x 36 (1) 1M x 36 25MB (4) 256K x 9 NONE (1) 4M x 36 (1) 2M x 36 26MB (4) 4M x 9 NONE (1) 2M x 36 (1) 512K x 36 28MB (4) 1M x 9 (4) 4M x 9 (1) 2M x 36 NONE 29MB (4) 1M x 9 (4) 4M x 9 (1) 256K x (1) 2M x 36 36 29MB (4) 4M x 9 (4) 256K x 9 (1) 2M x 36 (1) 1M x 36 32MB (4) 4M x 9 (4) 4M x 9 NONE NONE 32MB NONE NONE (1) 4M x 36 (1) 4M x 36 32MB NONE NONE (1) 8M x 36 NONE 33MB NONE NONE (1) 256K x (1) 8M x 36 36 33MB NONE NONE (1) 8M x 36 (1) 256K x 36 34MB (4) 256K x 9 (4) 256K x 9 (1) 4M x 36 (1) 4M x 36 34MB NONE NONE (1) 512K x (1) 8M x 36 36 34MB NONE NONE (1) 8M x 36 (1) 512K x 36 35MB (4) 4M x 9 (4) 4M x 9 (1) 512K x (1) 256K x 36 36 36MB (4) 4M x 9 (4) 1M x 9 (1) 2M x 36 (1) 2M x 36 36MB NONE NONE (1) 1M x 36 (1) 8M x 36 36MB NONE NONE (1) 8M x 36 (1) 1M x 36 37MB (4) 1M x 9 NONE (1) 8M x 36 (1) 256K x 36 39MB (4) 1M x 9 (4) 256K x 9 (1) 8M x 36 (1) 512K x 36 40MB NONE NONE (1) 2M x 36 (1) 8M x 36 40MB NONE NONE (1) 8M x 36 (1) 2M x 36 41MB (4) 1M x 9 (4) 256K x 9 (1) 1M x 36 (1) 8M x 36 44MB (4) 1M x 9 (4) 1M x 9 (1) 8M x 36 (1) 1M x 36 48MB NONE NONE (1) 4M x 36 (1) 8M x 36 48MB NONE NONE (1) 8M x 36 (1) 4M x 36 49MB (4) 4M x 9 NONE (1) 256K x (1) 8M x 36 36 53MB (4) 256K x 9 (4) 1M x 9 (1) 4M x 36 (1) 8M x 36 56MB (4) 4M x 9 (4) 4M x 9 (1) 2M x 36 (1) 4M x 36 60MB (4) 1M x 9 (4) 4M x 9 (1) 8M x 36 (1) 2M x 36 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 64MB (4) 16M x 9 NONE NONE NONE 64MB NONE NONE (1) 8M x 36 (1) 8M x 36 64MB NONE NONE (1) 16M x 36 NONE 65MB (4) 256K x 9 (4) 16M x 9 NONE NONE 65MB (4) 16M x 9 (4) 256K x 9 NONE NONE 65MB NONE NONE (1) 256K x (1) 16M x 36 36 65MB NONE NONE (1) 16M x 36 (1) 256K x 36 66MB (4) 256K x 9 (4) 16M x 9 (1) 256K x NONE 36 66MB NONE NONE (1) 512K x (1) 16M x 36 36 66MB NONE NONE (1) 16M x 36 (1) 512K x 36 68MB (4) 1M x 9 (4) 16M x 9 NONE NONE 68MB (4) 16M x 9 (4) 1M x 9 NONE NONE 68MB NONE NONE (1) 1M x 36 (1) 16M x 36 68MB NONE NONE (1) 16M x 36 (1) 1M x 36 70MB (4) 16M x 9 NONE (1) 512K x (1) 1M x 36 36 72MB NONE NONE (1) 2M x 36 (1) 16M x 36 72MB NONE NONE (1) 16M x 36 (1) 2M x 36 75MB (4) 16M x 9 (4) 256K x 9 (1) 512K x (1) 2M x 36 36 76MB (4) 1M x 9 (4) 1M x 9 (1) 1M x 36 (1) 16M x 36 77MB (4) 1M x 9 (4) 16M x 9 (1) 2M x 36 (1) 256K x 36 80MB (4) 4M x 9 (4) 16M x 9 NONE NONE 80MB (4) 16M x 9 (4) 4M x 9 NONE NONE 80MB (4) 4M x 9 NONE (1) 8M x 36 (1) 8M x 36 80MB NONE NONE (1) 4M x 36 (1) 16M x 36 80MB NONE NONE (1) 16M x 36 (1) 4M x 36 81MB (4) 16M x 9 (4) 256K x 9 (1) 4M x 36 NONE 82MB (4) 4M x 9 (4) 256K x 9 (1) 256K x (1) 16M x 36 36 84MB (4) 4M x 9 (4) 16M x 9 (1) 512K x (1) 512K x 36 36 85MB (4) 1M x 9 (4) 16M x 9 (1) 256K x (1) 4M x 36 36 85MB (4) 16M x 9 (4) 1M x 9 (1) 4M x 36 (1) 256K x 36 86MB (4) 16M x 9 (4) 1M x 9 (1) 512K x (1) 4M x 36 36 96MB NONE NONE (1) 8M x 36 (1) 16M x 36 96MB NONE NONE (1) 16M x 36 (1) 8M x 36 97MB (4) 256K x 9 (4) 16M x 9 (1) 8M x 36 NONE 97MB (4) 4M x 9 (4) 4M x 9 (1) 16M x 36 (1) 256K x 36 98MB (4) 16M x 9 (4) 4M x 9 (1) 4M x 36 (1) 512K x 36 113MB (4) 4M x 9 (4) 256K x 9 (1) 8M x 36 (1) 16M x 36 114MB (4) 16M x 9 (4) 4M x 9 (1) 512K x (1) 8M x 36 36 120MB (4) 4M x 9 (4) 16M x 9 (1) 2M x 36 (1) 8M x 36 128MB (4) 16M x 9 (4) 16M x 9 NONE NONE 128MB NONE NONE (1) 16M x 36 (1) 16M x 36 132MB (4) 16M x 9 NONE (1) 16M x 36 (1) 1M x 36 136MB (4) 16M x 9 NONE (1) 2M x 36 (1) 16M x 36 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 137MB (4) 16M x 9 (4) 256K x 9 (1) 16M x 36 (1) 2M x 36 148MB (4) 16M x 9 (4) 16M x 9 (1) 4M x 36 (1) 1M x 36 148MB (4) 16M x 9 (4) 1M x 9 (1) 16M x 36 (1) 4M x 36 176MB (4) 16M x 9 (4) 4M x 9 (1) 16M x 36 (1) 8M x 36 194MB (4) 16M x 9 (4) 16M x 9 (1) 512K x (1) 16M x 36 36 256MB (4) 16M x 9 (4) 16M x 9 (1) 16M x 36 (1) 16M x 36 CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 128KB (4) 32K x 8 NONE (1) 8K x 8 256KB (A) (4) 32K x 8 (4) 32K x 8 (1) 32K x 8 256KB (B) (4) 64K x 8 NONE (1) 32K x 8 512KB (A) (4) 64K x 8 (4) 64K x 8 (1) 32K x 8 512KB (B) (4) 128K x 8 NONE (1) 32K x 8 1MB (4) 128K x 8 (4) 128K x 8 (1) 64K x 8 CACHE JUMPER CONFIGURATION Size JP5 JP6 JP7 JP8 JP9 JP10 128KB 1 & 2, 1 & 2 1 & 2 Open 1 & 2 1 & 2 4 & 5 256KB (A) 2 & 3, 2 & 3 2 & 3 Open 1 & 2 2 & 3 4 & 5 256KB (B) 1 & 2, 1 & 2 1 & 2 Open 1 & 2 2 & 3 3 & 4 512KB (A) 2 & 3, 2 & 3 2 & 3 Open 2 & 3 2 & 3 4 & 5 512KB (B) 1 & 2, 1 & 2 1 & 2 Open 2 & 3 2 & 3 4 & 5 1MB 2 & 3, 2 & 3 2 & 3 Open 2 & 3 2 & 3 4 & 5 Note: Pins designated should be in the closed position. CPU TYPE CONFIGURATION Type JP12 JP13 JP14 JP15 JP16 80486SX 2 & 3 Open 2 & 3 Open 3 & 4 CX486DX 2 & 3 2 & 3 1 & 2 2 & 3 2 & 3 80486DX 2 & 3 2 & 3 2 & 3 Open 3 & 4 AM486DX2 2 & 3 2 & 3 2 & 3 Open 3 & 4 80486DX2 2 & 3 2 & 3 2 & 3 Open 3 & 4 80486DX4 2 & 3 2 & 3 2 & 3 Open 3 & 4 P24D 1 & 2 2 & 3 2 & 3 Open 1 & 2, 3 & 4 P24T 1 & 2 1 & 2 2 & 3 1 & 2 3 & 4 Note: Pins designated should be in the closed position. CPU TYPE CONFIGURATION (CON’T) Type JP17 JP18 JP19 JP20 80486SX pins 3 & 4 Open Open Open closed CX486DX pins 2 & 3 Open Open Open closed 80486DX pins 3 & 4 Open Open Open closed AM486DX2 pins 3 & 4 2 & 3 Open Open closed 80486DX2 pins 3 & 4 Open Open Open closed 80486DX4 pins 3 & 4 Open Open Open closed P24D pins 1 & 2 pins 1 & 2 Open pins 1 & 2 closed closed closed P24T pins 1 & 2 Open Open Open closed CPU TYPE CONFIGURATION (CON’T) Type JP21 JP22 JP23 JP24 80486SX Open pins 2 & 3 pins 4 & 5 Open closed closed CX486DX Open pins 1 & 2, 3 pins 2 & 3 Open & 4 closed closed 80486DX Open pins 1 & 2, 3 pins 4 & 5 Open & 4 closed closed AM486DX2 Open pins 1 & 2, 3 pins 4 & 5 Open & 4 closed closed 80486DX2 Open pins 1 & 2, 3 pins 4 & 5 Open & 4 closed closed 80486DX4 Open pins 1 & 2, 3 pins 4 & 5 Open & 4 closed closed P24D Open pins 1 & 2, 3 pins 4 & 5 pins 2 & 3 & 4 closed closed closed P24T pins 1 & 2 pins 1 & 2, 3 pins 1 & 2 Open closed & 4 closed closed CPU SPEED CONFIGURATION Speed JP25 JP38 JP39 JP40 25MHz pins 1 & 2 Open Open Open closed 33MHz pins 1 & 2 Closed Closed Open closed 40MHz pins 1 & 2 Closed Open Open closed 50iMHz pins 1 & 2 Open Open Open closed 50MHz pins 2 & 3 Open Closed Open closed 66iMHz pins 1 & 2 Closed Closed Open closed 75iMHz pins 1 & 2 Open Open Open closed 80iMHz pins 1 & 2 Closed Open Open closed 100iMHz pins 1 & 2 Closed Closed Open closed CPU VOLTAGE CONFIGURATION Voltage JP42 JP43 JP44 JP45 JP46 3.3v Closed Open Open Open Open 3.45v Open Closed Open Open Open 3.6v Open Open Closed Open Open 3.75v Open Open Open Closed Open 3.9v Open Open Open Open Closed BIOS CONFIGURATION Type JP52 JP53 EEPROM pins 2 & 3 closed pins 2 & 3 closed 12v flash pins 1 & 2 closed pins 1 & 2 closed DMA CONFIGURATION DMA JP36 JP37 DMA 1 pins 2 & 3 closed pins 2 & 3 closed DMA 3 pins 1 & 2 closed pins 1 & 2 closed