UNIDENTIFIED
PM486PU-S3 PCI
| 
 Processor  | 
 CX486SX/UMC486SX/80486SX/CX486DX/AM486DX/80486DX/CX486DX2/ AM486DX2/80486DX2/CX486DX4/AM486DX4/AM486DX4(WB)/80486DX4/ P24D/Pentium Overdrive/CXM1  | 
| 
 Processor Speed  | 
 20/25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/ 100(internal)MHz  | 
| 
 Chip Set  | 
 UMC  | 
| 
 Max. Onboard DRAM  | 
 64MB  | 
| 
 Cache  | 
 128/256/512KB  | 
| 
 BIOS  | 
 Unidentified  | 
| 
 Dimensions  | 
 254mm x 218mm  | 
| 
 I/O Options  | 
 32-bit PCI slots (3), green PC connector, floppy drive interface, IDE interfaces (2), parallel port, serial ports (2)  | 
| 
 NPU Options  | 
 None  | 
| 
 CONNECTIONS  | |||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 External battery  | 
 CN1  | 
 Green PC connector  | 
 JP1  | 
| 
 Serial port 2  | 
 CN2  | 
 Turbo switch  | 
 JP2  | 
| 
 Serial port 1  | 
 CN3  | 
 Turbo LED  | 
 JP3  | 
| 
 Parallel port  | 
 CN4  | 
 Reset switch  | 
 JP4  | 
| 
 Floppy drive interface  | 
 CN5  | 
 Speaker  | 
 JP5  | 
| 
 IDE interface 2  | 
 CN6  | 
 Power LED & keylock  | 
 JP6  | 
| 
 IDE interface 1  | 
 CN7  | 
 32-bit PCI slots  | 
 PC1 - PC3  | 
| 
 IDE interface LED  | 
 J1  | ||
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Jumper  | 
 Position  | |
| 
 »  | 
 Factory configured - do not alter  | 
 J20  | 
 N/A  | 
| 
 DRAM CONFIGURATION  | ||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
| 
 1MB  | 
 (1) 256K x 36  | 
 NONE  | 
| 
 2MB  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
| 
 2MB  | 
 (1) 512K x 36  | 
 NONE  | 
| 
 3MB  | 
 (1) 256K x 36  | 
 (1) 512K x 36  | 
| 
 4MB  | 
 (1) 512K x 36  | 
 (1) 512K x 36  | 
| 
 4MB  | 
 (1) 1M x 36  | 
 NONE  | 
| 
 5MB  | 
 (1) 256K x 36  | 
 (1) 1M x 36  | 
| 
 6MB  | 
 (1) 512K x 36  | 
 (1) 1M x 36  | 
| 
 8MB  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
| 
 8MB  | 
 (1) 2M x 36  | 
 NONE  | 
| 
 10MB  | 
 (1) 512K x 36  | 
 (1) 2M x 36  | 
| 
 12MB  | 
 (1) 1M x 36  | 
 (1) 2M x 36  | 
| 
 16MB  | 
 (1) 2M x 36  | 
 (1) 2M x 36  | 
| 
 20MB  | 
 (1) 1M x 36  | 
 (1) 4M x 36  | 
| 
 24MB  | 
 (1) 2M x 36  | 
 (1) 4M x 36  | 
| 
 32MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
| 
 32MB  | 
 (1) 8M x 36  | 
 NONE  | 
| 
 36MB  | 
 (1) 1M x 36  | 
 (1) 8M x 36  | 
| 
 40MB  | 
 (1) 2M x 36  | 
 (1) 8M x 36  | 
| 
 48MB  | 
 (1) 4M x 36  | 
 (1) 8M x 36  | 
| 
 64MB  | 
 (1) 8M x 36  | 
 (1) 8M x 36  | 
| 
 CACHE CONFIGURATION  | ||
| 
 Size  | 
 Bank 0  | 
 TAG  | 
| 
 128KB  | 
 (4) 32K x 8  | 
 (1) 8K or (1) 32K x 8  | 
| 
 256KB  | 
 (4) 64K x 8  | 
 (1) 32K x 8  | 
| 
 512KB  | 
 (4) 128K x 8  | 
 (1) 32K x 8  | 
| 
 CACHE JUMPER CONFIGURATION  | |
| 
 Size  | 
 J8  | 
| 
 128KB  | 
 Open  | 
| 
 256KB  | 
 pins 1 & 2 closed  | 
| 
 512KB  | 
 pins 1 & 2, 3 & 4 closed  | 
| 
 CPU TYPE CONFIGURATION  | |||||
| 
 Type  | 
 J2  | 
 J3  | 
 J5  | 
 J6  | 
 J7  | 
| 
 CX486SX  | 
 2 & 3  | 
 1 & 2  | 
 Open  | 
 1 & 2, 3 & 4  | 
 3 & 4  | 
| 
 UMC486SX  | 
 1 & 2  | 
 2 & 3  | 
 Open  | 
 Open  | 
 1 & 2  | 
| 
 80486SX  | 
 1 & 2  | 
 1 & 2  | 
 Open  | 
 2 & 3, 4 & 5  | 
 3 & 4  | 
| 
 CX486DX  | 
 2 & 3  | 
 1 & 2  | 
 Open  | 
 1 & 2, 3 & 4  | 
 3 & 4  | 
| 
 AM486DX  | 
 1 & 2  | 
 2 & 3  | 
 Open  | 
 Open  | 
 1 & 2  | 
| 
 80486DX  | 
 1 & 2  | 
 1 & 2  | 
 Open  | 
 2 & 3, 4 & 5  | 
 3 & 4  | 
| 
 CX486DX2  | 
 2 & 3  | 
 1 & 2  | 
 Open  | 
 1 & 2, 3 & 4  | 
 3 & 4  | 
| 
 AM486DX2  | 
 1 & 2  | 
 2 & 3  | 
 2 & 3  | 
 Open  | 
 1 & 2  | 
| 
 80486DX2  | 
 1 & 2  | 
 1 & 2  | 
 Open  | 
 2 & 3, 4 & 5  | 
 3 & 4  | 
| 
 CX486DX4  | 
 2 & 3  | 
 1 & 2  | 
 Open  | 
 1 & 2, 3 & 4  | 
 3 & 4  | 
| 
 AM486DX4  | 
 1 & 2  | 
 2 & 3  | 
 Open  | 
 Open  | 
 1 & 2  | 
| 
 AM486DX4 (WB)  | 
 1 & 2  | 
 2 & 3  | 
 2 & 3  | 
 Open  | 
 1 & 2  | 
| 
 80486DX4  | 
 1 & 2  | 
 1 & 2  | 
 Open  | 
 2 & 3, 4 & 5  | 
 3 & 4  | 
| 
 P24D  | 
 1 & 2  | 
 1 & 2  | 
 Open  | 
 2 & 3, 4 & 5  | 
 3 & 4  | 
| 
 P24T  | 
 1 & 2  | 
 1 & 2  | 
 Open  | 
 2 & 3, 4 & 5  | 
 3 & 4, 5 & 6  | 
| 
 CXM1  | 
 1 & 2  | 
 1 & 2  | 
 Open  | 
 2 & 3, 4 & 5  | 
 3 & 4  | 
| 
 Note: Pins designated should be in the closed position.  | |||||
| 
 CPU TYPE CONFIGURATION (CON’T)  | |||||
| 
 Type  | 
 J9  | 
 J10  | 
 J12  | 
 J13  | 
 J14  | 
| 
 CX486SX  | 
 Open  | 
 2 & 3  | 
 Open  | 
 Open  | 
 Open  | 
| 
 UMC486SX  | 
 1 & 2, 3 & 4  | 
 3 & 4  | 
 Open  | 
 Open  | 
 Open  | 
| 
 80486SX  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
| 
 CX486DX  | 
 3 & 4  | 
 2 & 3  | 
 Open  | 
 Open  | 
 Open  | 
| 
 AM486DX  | 
 1 & 2, 3 & 4  | 
 3 & 4  | 
 Open  | 
 Open  | 
 Open  | 
| 
 80486DX  | 
 3 & 4  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
| 
 CX486DX2  | 
 3 & 4  | 
 2 & 3  | 
 Open  | 
 Open  | 
 Open  | 
| 
 AM486DX2  | 
 1 & 2, 3 & 4  | 
 3 & 4  | 
 Open  | 
 Open  | 
 Open  | 
| 
 80486DX2  | 
 3 & 4  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
| 
 CX486DX4  | 
 3 & 4  | 
 2 & 3  | 
 Open  | 
 Open  | 
 Open  | 
| 
 AM486DX4  | 
 1 & 2, 3 & 4  | 
 3 & 4  | 
 Open  | 
 Open  | 
 Open  | 
| 
 AM486DX4 (WB)  | 
 1 & 2, 3 & 4  | 
 3 & 4  | 
 Open  | 
 Open  | 
 Open  | 
| 
 80486DX4  | 
 3 & 4  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
| 
 P24D  | 
 3 & 4  | 
 Open  | 
 Closed  | 
 Closed  | 
 Closed  | 
| 
 P24T  | 
 2 & 3  | 
 1 & 2  | 
 Open  | 
 Open  | 
 Open  | 
| 
 CXM1  | 
 3 & 4  | 
 Open  | 
 Closed  | 
 Closed  | 
 Closed  | 
| 
 Note: Pins designated should be in the closed position.  | |||||
| 
 CPU TYPE CONFIGURATION (CON’T)  | ||||||
| 
 Type  | 
 J15  | 
 J16  | 
 J17  | 
 J18  | 
 J19  | 
 J21  | 
| 
 CX486SX  | 
 Open  | 
 2 & 3  | 
 1 & 2  | 
 1 & 2  | 
 2 & 3  | 
 2 & 3  | 
| 
 UMC486SX  | 
 Open  | 
 Open  | 
 Open  | 
 2 & 3  | 
 Open  | 
 2 & 3  | 
| 
 80486SX  | 
 Open  | 
 1 & 2  | 
 Open  | 
 1 & 2  | 
 Open  | 
 2 & 3  | 
| 
 CX486DX  | 
 Open  | 
 2 & 3  | 
 1 & 2  | 
 1 & 2  | 
 2 & 3  | 
 1 & 2, 3 & 4  | 
| 
 AM486DX  | 
 Open  | 
 Open  | 
 Open  | 
 2 & 3  | 
 Open  | 
 1 & 2, 3 & 4  | 
| 
 80486DX  | 
 Open  | 
 1 & 2  | 
 Open  | 
 1 & 2  | 
 Open  | 
 1 & 2, 3 & 4  | 
| 
 CX486DX2  | 
 Open  | 
 2 & 3  | 
 1 & 2  | 
 1 & 2  | 
 2 & 3  | 
 1 & 2, 3 & 4  | 
| 
 AM486DX2  | 
 Open  | 
 Open  | 
 Open  | 
 2 & 3  | 
 Open  | 
 1 & 2, 3 & 4  | 
| 
 80486DX2  | 
 Open  | 
 1 & 2  | 
 Open  | 
 1 & 2  | 
 Open  | 
 1 & 2, 3 & 4  | 
| 
 CX486DX4  | 
 Open  | 
 2 & 3  | 
 1 & 2  | 
 1 & 2  | 
 2 & 3  | 
 1 & 2, 3 & 4  | 
| 
 AM486DX4  | 
 Open  | 
 Open  | 
 Open  | 
 2 & 3  | 
 Open  | 
 1 & 2, 3 & 4  | 
| 
 AM486DX4 (WB)  | 
 Open  | 
 Open  | 
 Open  | 
 2 & 3  | 
 Open  | 
 1 & 2, 3 & 4  | 
| 
 80486DX4  | 
 Open  | 
 1 & 2  | 
 Open  | 
 1 & 2  | 
 Open  | 
 1 & 2, 3 & 4  | 
| 
 P24D  | 
 Open  | 
 1 & 2  | 
 Open  | 
 1 & 2  | 
 Open  | 
 1 & 2, 3 & 4  | 
| 
 P24T  | 
 Open  | 
 1 & 2  | 
 2 & 3  | 
 1 & 2  | 
 1 & 2  | 
 1 & 2, 3 & 4  | 
| 
 CXM1  | 
 Open  | 
 1 & 2  | 
 Open  | 
 1 & 2  | 
 Open  | 
 1 & 2, 3 & 4  | 
| 
 Note: Pins designated should be in the closed position.  | ||||||
| 
 CPU SPEED CONFIGURATION  | |||
| 
 Speed  | 
 J24 pins 1 & 2  | 
 J24 pins 3 & 4  | 
 J24 pins 5 & 6  | 
| 
 20MHz  | 
 Open  | 
 Open  | 
 Open  | 
| 
 25MHz  | 
 Open  | 
 Open  | 
 Closed  | 
| 
 33MHz  | 
 Closed  | 
 Closed  | 
 Closed  | 
| 
 40MHz  | 
 Open  | 
 Closed  | 
 Closed  | 
| 
 50iMHz  | 
 Open  | 
 Open  | 
 Closed  | 
| 
 50MHz  | 
 Closed  | 
 Open  | 
 Open  | 
| 
 66iMHz  | 
 Closed  | 
 Closed  | 
 Closed  | 
| 
 75iMHz  | 
 Open  | 
 Open  | 
 Closed  | 
| 
 80iMHz  | 
 Open  | 
 Closed  | 
 Closed  | 
| 
 100iMHz  | 
 Closed  | 
 Closed  | 
 Closed  | 
| 
 CPU VOLTAGE CONFIGURATION  | |
| 
 Voltage  | 
 J11  | 
| 
 3.3v  | 
 pins 2 & 3 closed  | 
| 
 3.45v  | 
 pins 2 & 3 closed  | 
| 
 4v  | 
 pins 2 & 3 closed  | 
| 
 5v  | 
 pins 1 & 2 closed  |