M TECHNOLOGY, INC.
R418 PCI-486 (VER.2)
| 
 Processor  | 
 80486SX/CX486DX/AM486DX(V8T)/80486DX/CX486DX2/ AM486DX2(V8T)/80486DX2/CX486DX4/AM486DX4(V8T)/ AM486DX4(V8B)/80486DX4/P24D/P24T/CX5X86/AM X5  | 
| 
 Processor Speed  | 
 25/33/40/50(internal)/50/66(internal)/80(internal)/100(internal)/ 120(internal)/133(internal)/160(internal)MHz  | 
| 
 Chip Set  | 
 SIS  | 
| 
 Video Chip Set  | 
 None  | 
| 
 Maximum Onboard Memory  | 
 256MB  | 
| 
 Maximum Video Memory  | 
 None  | 
| 
 Cache  | 
 128/256/512/1024KB  | 
| 
 BIOS  | 
 Award  | 
| 
 Dimensions  | 
 330mm x 218mm  | 
| 
 I/O Options  | 
 Parallel port, serial ports (2), 32-bit PCI slots (3), green PC connector, floppy drive interface, IDE interfaces (2)  | 
| 
 NPU Options  | 
 None  | 
| 
 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 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 36  | 
 None  | 
| 
 2MB  | 
 (4) 256K x 9  | 
 (4) 256K x 9  | 
 None  | 
 None  | 
| 
 2MB  | 
 None  | 
 None  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
| 
 2MB  | 
 None  | 
 None  | 
 (1) 512K x 36  | 
 None  | 
| 
 3MB  | 
 None  | 
 None  | 
 (1) 256K x 36  | 
 (1) 512K x 36  | 
| 
 3MB  | 
 None  | 
 None  | 
 (1) 512K x 36  | 
 (1) 256K x 36  | 
| 
 4MB  | 
 (4) 1M x 9  | 
 None  | 
 None  | 
 None  | 
| 
 4MB  | 
 None  | 
 None  | 
 (1) 512K x 36  | 
 (1) 512K x 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 36  | 
 (1) 1M x 36  | 
| 
 5MB  | 
 None  | 
 None  | 
 (1) 1M x 36  | 
 (1) 256K x 36  | 
| 
 6MB  | 
 (4) 1M x 9  | 
 None  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
| 
 6MB  | 
 None  | 
 None  | 
 (1) 512K x 36  | 
 (1) 1M x 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  | 
| 
 DRAM CONFIGURATION (CON’T)  | ||||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
 Bank 2  | 
 Bank 3  | 
| 
 8MB  | 
 (4) 1M x 9  | 
 (4) 256K x 9  | 
 (1) 256K x 36  | 
 (1) 512K x 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 36  | 
 (1) 2M x 36  | 
| 
 9MB  | 
 None  | 
 None  | 
 (1) 2M x 36  | 
 (1) 256K x 36  | 
| 
 10MB  | 
 None  | 
 None  | 
 (1) 512K x 36  | 
 (1) 2M x 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 36  | 
 (1) 1M x 36  | 
| 
 16MB  | 
 (4) 4M x 9  | 
 None  | 
 None  | 
 None  | 
| 
 16MB  | 
 None  | 
 None  | 
 (1) 2M x 36  | 
 (1) 2M x 36  | 
| 
 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 36  | 
 (1) 4M x 36  | 
| 
 17MB  | 
 None  | 
 None  | 
 (1) 4M x 36  | 
 (1) 256K x 36  | 
| 
 18MB  | 
 None  | 
 None  | 
 (1) 512K x 36  | 
 (1) 4M x 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 36  | 
 None  | 
| 
 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 36  | 
 (1) 2M x 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 36  | 
 (1) 8M x 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 36  | 
 (1) 8M x 36  | 
| 
 34MB  | 
 None  | 
 None  | 
 (1) 8M x 36  | 
 (1) 512K x 36  | 
| 
 35MB  | 
 (4) 4M x 9  | 
 (4) 4M x 9  | 
 (1) 512K x 36  | 
 (1) 256K x 36  | 
| 
 DRAM CONFIGURATION (CON’T)  | ||||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
 Bank 2  | 
 Bank 3  | 
| 
 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 36  | 
 (1) 8M x 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  | 
| 
 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 36  | 
 (1) 16M x 36  | 
| 
 65MB  | 
 None  | 
 None  | 
 (1) 16M x 36  | 
 (1) 256K x 36  | 
| 
 66MB  | 
 (4) 256K x 9  | 
 (4) 16M x 9  | 
 (1) 256K x 36  | 
 None  | 
| 
 66MB  | 
 None  | 
 None  | 
 (1) 512K x 36  | 
 (1) 16M x 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 36  | 
 (1) 1M x 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 36  | 
 (1) 2M x 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 36  | 
 (1) 16M x 36  | 
| 
 DRAM CONFIGURATION (CON’T)  | ||||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
 Bank 2  | 
 Bank 3  | 
| 
 84MB  | 
 (4) 4M x 9  | 
 (4) 16M x 9  | 
 (1) 512K x 36  | 
 (1) 512K x 36  | 
| 
 85MB  | 
 (4) 1M x 9  | 
 (4) 16M x 9  | 
 (1) 256K x 36  | 
 (1) 4M x 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 36  | 
 (1) 4M x 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 36  | 
 (1) 8M x 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  | 
| 
 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 36  | 
 (1) 16M x 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, 4 & 5  | 
 1 & 2  | 
 1 & 2  | 
 Open  | 
 1 & 2  | 
 1 & 2  | 
| 
 256KB (A)  | 
 2 & 3, 4 & 5  | 
 2 & 3  | 
 2 & 3  | 
 Open  | 
 1 & 2  | 
 2 & 3  | 
| 
 256KB (B)  | 
 1 & 2, 3 & 4  | 
 1 & 2  | 
 1 & 2  | 
 Open  | 
 1 & 2  | 
 2 & 3  | 
| 
 512KB (A)  | 
 2 & 3, 4 & 5  | 
 2 & 3  | 
 2 & 3  | 
 Open  | 
 2 & 3  | 
 2 & 3  | 
| 
 512KB (B)  | 
 1 & 2, 4 & 5  | 
 1 & 2  | 
 1 & 2  | 
 Open  | 
 2 & 3  | 
 2 & 3  | 
| 
 1MB  | 
 2 & 3, 4 & 5  | 
 2 & 3  | 
 2 & 3  | 
 Open  | 
 2 & 3  | 
 2 & 3  | 
| 
 Note: Pins designated should be in the closed position.  | ||||||
| 
 CPU SPEED SELECTION  | ||||
| 
 Speed  | 
 JP25  | 
 JP38  | 
 JP39  | 
 JP40  | 
| 
 25MHz  | 
 Pins 1 & 2 closed  | 
 Open  | 
 Open  | 
 Open  | 
| 
 33MHz  | 
 Pins 1 & 2 closed  | 
 Closed  | 
 Closed  | 
 Open  | 
| 
 40MHz  | 
 Pins 1 & 2 closed  | 
 Closed  | 
 Open  | 
 Open  | 
| 
 50iMHz  | 
 Pins 1 & 2 closed  | 
 Open  | 
 Open  | 
 Open  | 
| 
 50MHz  | 
 Pins 2 & 3 closed  | 
 Open  | 
 Closed  | 
 Open  | 
| 
 66iMHz  | 
 Pins 1 & 2 closed  | 
 Closed  | 
 Closed  | 
 Open  | 
| 
 80iMHz  | 
 Pins 1 & 2 closed  | 
 Closed  | 
 Open  | 
 Open  | 
| 
 100iMHz  | 
 Pins 1 & 2 closed  | 
 Closed  | 
 Closed  | 
 Open  | 
| 
 120iMHz  | 
 Pins 1 & 2 closed  | 
 Closed  | 
 Open  | 
 Open  | 
| 
 133iMHz  | 
 Pins 1 & 2 closed  | 
 Closed  | 
 Closed  | 
 Open  | 
| 
 160iMHz  | 
 Pins 1 & 2 closed  | 
 Closed  | 
 Open  | 
 Open  | 
| 
 CPU TYPE SELECTION  | |||||
| 
 Type  | 
 JP12  | 
 JP13  | 
 JP14  | 
 JP15  | 
 JP16  | 
| 
 80486SX  | 
 2 & 3  | 
 Open  | 
 2 & 3  | 
 Open  | 
 3 & 4  | 
| 
 CX486DX(3.45v)  | 
 2 & 3  | 
 2 & 3  | 
 1 & 2  | 
 2 & 3  | 
 2 & 3  | 
| 
 CX486DX(5v)  | 
 2 & 3  | 
 2 & 3  | 
 1 & 2  | 
 2 & 3  | 
 2 & 3  | 
| 
 AM486DX(V8T)  | 
 2 & 3  | 
 2 & 3  | 
 2 & 3  | 
 Open  | 
 3 & 4  | 
| 
 80486DX  | 
 2 & 3  | 
 2 & 3  | 
 2 & 3  | 
 Open  | 
 3 & 4  | 
| 
 CX486DX2(3.45v)  | 
 2 & 3  | 
 2 & 3  | 
 1 & 2  | 
 2 & 3  | 
 2 & 3  | 
| 
 CX486DX2(5v)  | 
 2 & 3  | 
 2 & 3  | 
 1 & 2  | 
 2 & 3  | 
 2 & 3  | 
| 
 AM486DX2(V8T)  | 
 2 & 3  | 
 2 & 3  | 
 2 & 3  | 
 Open  | 
 3 & 4  | 
| 
 80486DX2  | 
 2 & 3  | 
 2 & 3  | 
 2 & 3  | 
 Open  | 
 3 & 4  | 
| 
 CX486DX4(3.45v)  | 
 2 & 3  | 
 2 & 3  | 
 1 & 2  | 
 2 & 3  | 
 2 & 3  | 
| 
 CX486DX4(5v)  | 
 2 & 3  | 
 2 & 3  | 
 1 & 2  | 
 2 & 3  | 
 2 & 3  | 
| 
 AM486DX4(V8T)  | 
 2 & 3  | 
 2 & 3  | 
 2 & 3  | 
 Open  | 
 3 & 4  | 
| 
 AM486DX4-100(V8B)  | 
 1 & 2  | 
 2 & 3  | 
 2 & 3  | 
 Open  | 
 1 & 2, 3 & 4  | 
| 
 AM486DX4-100(V8T)  | 
 2 & 3  | 
 2 & 3  | 
 2 & 3  | 
 Open  | 
 3 & 4  | 
| 
 AM486DX4-120(V8B)  | 
 1 & 2  | 
 2 & 3  | 
 2 & 3  | 
 Open  | 
 1 & 2, 3 & 4  | 
| 
 AM486DX4-120(V8T)  | 
 2 & 3  | 
 2 & 3  | 
 2 & 3  | 
 Open  | 
 3 & 4  | 
| 
 AM486DX4-133(V8T)  | 
 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  | 
| 
 CX5X86-100  | 
 2 & 3  | 
 2 & 3  | 
 2 & 3  | 
 Open  | 
 1 & 2, 3 & 4  | 
| 
 CX5X86-120  | 
 2 & 3  | 
 2 & 3  | 
 2 & 3  | 
 Open  | 
 1 & 2, 3 & 4  | 
| 
 CX5X86-133  | 
 2 & 3  | 
 2 & 3  | 
 2 & 3  | 
 Open  | 
 1 & 2, 3 & 4  | 
| 
 AM X5-133  | 
 1 & 2  | 
 2 & 3  | 
 2 & 3  | 
 Open  | 
 1 & 2, 3 & 4  | 
| 
 AM X5-160  | 
 1 & 2  | 
 2 & 3  | 
 2 & 3  | 
 Open  | 
 1 & 2, 3 & 4  | 
| 
 Note: Pins designated should be in the closed position.  | |||||
| 
 CPU TYPE SELECTION (CON’T)  | ||||
| 
 Type  | 
 JP17  | 
 JP18  | 
 JP19  | 
 JP20  | 
| 
 80486SX  | 
 3 & 4  | 
 Open  | 
 Open  | 
 Open  | 
| 
 CX486DX(3.45v)  | 
 2 & 3, 4 & 5  | 
 Open  | 
 Open  | 
 Open  | 
| 
 CX486DX(5v)  | 
 2 & 3  | 
 Open  | 
 Open  | 
 Open  | 
| 
 AM486DX(V8T)  | 
 3 & 4  | 
 2 & 3  | 
 Open  | 
 Open  | 
| 
 80486DX  | 
 3 & 4  | 
 2 & 3  | 
 Open  | 
 Open  | 
| 
 CX486DX2(3.45v)  | 
 2 & 3, 4 & 5  | 
 Open  | 
 Open  | 
 Open  | 
| 
 CX486DX2(5v)  | 
 2 & 3  | 
 Open  | 
 Open  | 
 Open  | 
| 
 AM486DX2(V8T)  | 
 3 & 4  | 
 2 & 3  | 
 Open  | 
 Open  | 
| 
 80486DX2  | 
 3 & 4  | 
 2 & 3  | 
 Open  | 
 Open  | 
| 
 CX486DX4(3.45v)  | 
 2 & 3, 4 & 5  | 
 Open  | 
 Open  | 
 Open  | 
| 
 CX486DX4(5v)  | 
 2 & 3  | 
 Open  | 
 Open  | 
 Open  | 
| 
 AM486DX4(V8T)  | 
 3 & 4  | 
 2 & 3  | 
 Open  | 
 Open  | 
| 
 AM486DX4-100(V8B)  | 
 1 & 2, 3 & 4  | 
 1 & 2  | 
 Open  | 
 1 & 2  | 
| 
 AM486DX4-100(V8T)  | 
 3 & 4  | 
 Open  | 
 Open  | 
 Open  | 
| 
 AM486DX4-120(V8B)  | 
 1 & 2, 3 & 4  | 
 1 & 2  | 
 Open  | 
 1 & 2  | 
| 
 AM486DX4-120(V8T)  | 
 3 & 4  | 
 Open  | 
 Open  | 
 Open  | 
| 
 AM486DX4-133(V8T)  | 
 3 & 4  | 
 2 & 3  | 
 Open  | 
 Open  | 
| 
 80486DX4  | 
 3 & 4  | 
 2 & 3  | 
 Open  | 
 Open  | 
| 
 P24D  | 
 1 & 2  | 
 1 & 2  | 
 Open  | 
 1 & 2  | 
| 
 P24T  | 
 1 & 2  | 
 Open  | 
 Open  | 
 Open  | 
| 
 CX5X86-100  | 
 1 & 2, 3 & 4  | 
 1 & 2  | 
 Open  | 
 1 & 2  | 
| 
 CX5X86-120  | 
 1 & 2, 3 & 4  | 
 1 & 2  | 
 Open  | 
 1 & 2  | 
| 
 CX5X86-133  | 
 1 & 2, 3 & 4  | 
 1 & 2  | 
 2 & 3  | 
 1 & 2  | 
| 
 AM X5-133  | 
 1 & 2, 3 & 4  | 
 1 & 2  | 
 2 & 3  | 
 1 & 2  | 
| 
 AM X5-160  | 
 1 & 2, 3 & 4  | 
 1 & 2  | 
 2 & 3  | 
 1 & 2  | 
| 
 Note: Pins designated should be in the closed position.  | ||||
| 
 CPU TYPE SELECTION (CON’T)  | ||||
| 
 Type  | 
 JP21  | 
 JP22  | 
 JP23  | 
 JP24  | 
| 
 80486SX  | 
 Open  | 
 2 & 3  | 
 4 & 5  | 
 Open  | 
| 
 CX486DX(3.45v)  | 
 Open  | 
 1 & 2, 3 & 4  | 
 2 & 3  | 
 Open  | 
| 
 CX486DX(5v)  | 
 Open  | 
 1 & 2, 3 & 4  | 
 2 & 3  | 
 Open  | 
| 
 AM486DX(V8T)  | 
 Open  | 
 1 & 2, 3 & 4  | 
 4 & 5  | 
 Open  | 
| 
 80486DX  | 
 Open  | 
 1 & 2, 3 & 4  | 
 4 & 5  | 
 Open  | 
| 
 CX486DX2(3.45v)  | 
 Open  | 
 1 & 2, 3 & 4  | 
 2 & 3  | 
 Open  | 
| 
 CX486DX2(5v)  | 
 Open  | 
 1 & 2, 3 & 4  | 
 2 & 3  | 
 Open  | 
| 
 AM486DX2(V8T)  | 
 Open  | 
 1 & 2, 3 & 4  | 
 4 & 5  | 
 Open  | 
| 
 80486DX2  | 
 Open  | 
 1 & 2, 3 & 4  | 
 4 & 5  | 
 Open  | 
| 
 CX486DX4(3.45v)  | 
 Open  | 
 1 & 2, 3 & 4  | 
 2 & 3  | 
 Open  | 
| 
 CX486DX4(5v)  | 
 Open  | 
 1 & 2, 3 & 4  | 
 2 & 3  | 
 Open  | 
| 
 AM486DX4(V8T)  | 
 Open  | 
 1 & 2, 3 & 4  | 
 4 & 5  | 
 Open  | 
| 
 AM486DX4-100(V8B)  | 
 Open  | 
 1 & 2, 3 & 4  | 
 4 & 5  | 
 2 & 3  | 
| 
 AM486DX4-100(V8T)  | 
 Open  | 
 1 & 2, 3 & 4  | 
 4 & 5  | 
 2 & 3  | 
| 
 AM486DX4-120(V8B)  | 
 Open  | 
 1 & 2, 3 & 4  | 
 4 & 5  | 
 Open  | 
| 
 AM486DX4-120(V8T)  | 
 Open  | 
 1 & 2, 3 & 4  | 
 4 & 5  | 
 Open  | 
| 
 AM486DX4-133(V8T)  | 
 Open  | 
 1 & 2, 3 & 4  | 
 4 & 5  | 
 Open  | 
| 
 80486DX4  | 
 Open  | 
 1 & 2, 3 & 4  | 
 4 & 5  | 
 Open  | 
| 
 P24D  | 
 Open  | 
 1 & 2, 3 & 4  | 
 4 & 5  | 
 2 & 3  | 
| 
 P24T  | 
 1 & 2 or 3 & 4  | 
 1 & 2, 3 & 4  | 
 1 & 2  | 
 Open  | 
| 
 CX5X86-100  | 
 Open  | 
 1 & 2, 3 & 4  | 
 4 & 5  | 
 2 & 3  | 
| 
 CX5X86-120  | 
 Open  | 
 1 & 2, 3 & 4  | 
 4 & 5  | 
 2 & 3  | 
| 
 CX5X86-133  | 
 Open  | 
 1 & 2, 3 & 4  | 
 4 & 5  | 
 2 & 3  | 
| 
 AM X5-133  | 
 Open  | 
 1 & 2, 3 & 4  | 
 4 & 5  | 
 2 & 3  | 
| 
 AM X5-160  | 
 Open  | 
 1 & 2, 3 & 4  | 
 4 & 5  | 
 2 & 3  | 
| 
 Note: Pins designated should be in the closed position.  | ||||
| 
 CPU VOLTAGE SELECTION  | ||||||
| 
 Voltage  | 
 JP42  | 
 JP43  | 
 JP44  | 
 JP45  | 
 JP46  | 
 JP48  | 
| 
 3.3v  | 
 Closed  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
| 
 3.45v  | 
 Open  | 
 Closed  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
| 
 3.6v  | 
 Open  | 
 Open  | 
 Closed  | 
 Open  | 
 Open  | 
 Open  | 
| 
 3.75v  | 
 Open  | 
 Open  | 
 Open  | 
 Closed  | 
 Open  | 
 Open  | 
| 
 3.9v  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Closed  | 
 Open  | 
| 
 5v  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 1 & 2, 3 & 4  | 
| 
 Note: Pins designated should be in the closed position. JP48 may not be present on boards that are 5v auto-detect.  | ||||||
| 
 DMA CHANNEL SELECTION  | ||
| 
 Channel  | 
 JP36  | 
 JP37  | 
| 
 1  | 
 Pins 2 & 3 closed  | 
 Pins 2 & 3 closed  | 
| 
 3  | 
 Pins 1 & 2 closed  | 
 Pins 1 & 2 closed  | 
| 
 BIOS SELECTION  | ||
| 
 Type  | 
 JP52  | 
 JP53  | 
| 
 EEPROM  | 
 Pins 2 & 3 closed  | 
 Pins 2 & 3 closed  | 
| 
 12v flash  | 
 Pins 1 & 2 closed  | 
 Pins 1 & 2 closed  |