ELITEGROUP COMPUTER SYSTEMS, INC.
UM4980
| 
 Processor  | 
 CX486S/SL80486SX/80486SX/SL80486SX2/80486SX2/AM486DXL/AM486DX/CX486DX/UMCU5S/AM486DXL/SL80486DX/80486DX/AM486DX2/CX486DX2/ SL80486DX2/80486DX2/80486DX4  | 
| 
 Processor Speed  | 
 25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz  | 
| 
 Chip Set  | 
 UMC  | 
| 
 Max. Onboard DRAM  | 
 64MB  | 
| 
 Cache  | 
 128/256/512/1024KB  | 
| 
 BIOS  | 
 Phoenix  | 
| 
 Dimensions  | 
 254mm x 218mm  | 
| 
 I/O Options  | 
 32-bit VESA local bus slots (3), green PC connector  | 
| 
 NPU Options  | 
 None  | 
| 
 CONNECTIONS  | |||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 External battery  | 
 J2  | 
 Reset switch  | 
 J30  | 
| 
 Green PC connector  | 
 J27  | 
 Turbo switch  | 
 J31  | 
| 
 Turbo LED  | 
 J28  | 
 Power LED & keylock  | 
 J32  | 
| 
 Speaker  | 
 J29  | 
 32-bit VESA local bus slots  | 
 SL1 - SL3  | 
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Jumper  | 
 Position  | |
| 
 »  | 
 BIOS type select EPROM  | 
 JP1  | 
 Open  | 
| 
 BIOS type select 5v flash  | 
 JP1  | 
 pins 1 & 2 closed  | |
| 
 BIOS type select 12v flash  | 
 JP1  | 
 pins 2 & 3 closed  | |
| 
 »  | 
 Keyboard type select external  | 
 JP3  | 
 Open  | 
| 
 Keyboard type select internal  | 
 JP3  | 
 Closed  | |
| 
 DRAM CONFIGURATION  | ||||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
 Bank 2  | 
 Bank 3  | 
| 
 1MB  | 
 (1) 256K x 36  | 
 NONE  | 
 NONE  | 
 NONE  | 
| 
 2MB  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
 NONE  | 
 NONE  | 
| 
 2MB  | 
 NONE  | 
 NONE  | 
 NONE  | 
 (1) 512K x 36  | 
| 
 3MB  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
 NONE  | 
| 
 4MB  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
| 
 4MB  | 
 NONE  | 
 NONE  | 
 (1) 512K x 36  | 
 (1) 512K x 36  | 
| 
 4MB  | 
 (1) 1M x 36  | 
 NONE  | 
 NONE  | 
 NONE  | 
| 
 5MB  | 
 (1) 1M x 36  | 
 (1) 256K x 36  | 
 NONE  | 
 NONE  | 
| 
 6MB  | 
 (1) 1M x 36  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
 NONE  | 
| 
 7MB  | 
 (1) 1M x 36  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
| 
 8MB  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 NONE  | 
 NONE  | 
| 
 8MB  | 
 NONE  | 
 NONE  | 
 NONE  | 
 (1) 2M x 36  | 
| 
 9MB  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (1) 256K x 36  | 
 NONE  | 
| 
 10MB  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (1) 256K x 36  | 
 (1) 256K x 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  | 
| 
 16MB  | 
 NONE  | 
 NONE  | 
 (1) 2M x 36  | 
 (1) 2M x 36  | 
| 
 16MB  | 
 (1) 4M x 36  | 
 NONE  | 
 NONE  | 
 NONE  | 
| 
 17MB  | 
 (1) 4M x 36  | 
 (1) 256K x 36  | 
 NONE  | 
 NONE  | 
| 
 18MB  | 
 (1) 4M x 36  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
 NONE  | 
| 
 19MB  | 
 (1) 4M x 36  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
| 
 20MB  | 
 (1) 4M x 36  | 
 (1) 1M x 36  | 
 NONE  | 
 NONE  | 
| 
 21MB  | 
 (1) 4M x 36  | 
 (1) 1M x 36  | 
 (1) 256K x 36  | 
 NONE  | 
| 
 22MB  | 
 (1) 4M x 36  | 
 (1) 1M x 36  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
| 
 24MB  | 
 (1) 4M x 36  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 NONE  | 
| 
 25MB  | 
 (1) 4M x 36  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (1) 256K x 36  | 
| 
 28MB  | 
 (1) 4M x 36  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
| 
 32MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 NONE  | 
 NONE  | 
| 
 33MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (1) 256K x 36  | 
 NONE  | 
| 
 34MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
| 
 36MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (1) 1M x 36  | 
 NONE  | 
| 
 37MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (1) 1M x 36  | 
 (1) 256K x 36  | 
| 
 40MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
| 
 48MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 NONE  | 
| 
 DRAM CONFIGURATION (CON’T)  | ||||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
 Bank 2  | 
 Bank 3  | 
| 
 49MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (1) 256K x 36  | 
| 
 52MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (1) 1M x 36  | 
| 
 64MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
| 
 CACHE CONFIGURATION  | |||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
 TAG  | 
| 
 128KB  | 
 (4) 32K x 8  | 
 NONE  | 
 (1) 8K x 8  | 
| 
 256KB  | 
 (4) 64K x 8  | 
 NONE  | 
 (1) 32K x 8  | 
| 
 256KB  | 
 (4) 32K x 8  | 
 (4) 32K x 8  | 
 (1) 32K x 8  | 
| 
 512KB  | 
 (4) 64K x 8  | 
 (4) 64K x 8  | 
 (1) 32K x 8  | 
| 
 512KB  | 
 (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  | 
 JP4  | 
 JP5  | 
 JP6  | 
 JP10  | 
 JP11  | 
 JP12  | 
 JP13  | 
| 
 128KB  | 
 1 & 2  | 
 1 & 2  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
| 
 256KB  | 
 1 & 2  | 
 1 & 2  | 
 1 & 2  | 
 Open  | 
 Open  | 
 Open  | 
 Closed  | 
| 
 256KB  | 
 2 & 3  | 
 2 & 3  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Closed  | 
| 
 512KB  | 
 2 & 3  | 
 2 & 3  | 
 2 & 3  | 
 Open  | 
 Closed  | 
 Open  | 
 Closed  | 
| 
 512KB  | 
 1 & 2  | 
 2 & 3  | 
 2 & 3  | 
 1 & 2  | 
 Closed  | 
 Open  | 
 Closed  | 
| 
 1MB  | 
 2 & 3  | 
 2 & 3  | 
 2 & 3  | 
 2 & 3  | 
 Closed  | 
 Closed  | 
 Closed  | 
| 
 Note: Pins designated should be in the closed position.  | |||||||
| 
 CPU TYPE CONFIGURATION  | |||
| 
 Type  | 
 JP14  | 
 JP15  | 
 JP16  | 
| 
 CX486S  | 
 pins 2 & 3, 4 & 5 closed  | 
 2 & 3  | 
 Open  | 
| 
 SL80486SX  | 
 pins 1 & 2, 3 & 4 closed  | 
 2 & 3  | 
 Open  | 
| 
 80486SX  | 
 Open  | 
 pins 2 & 3 closed  | 
 Open  | 
| 
 SL80486SX2  | 
 pins 1 & 2, 3 & 4 closed  | 
 2 & 3  | 
 Open  | 
| 
 80486SX2  | 
 Open  | 
 pins 2 & 3 closed  | 
 Open  | 
| 
 AM486DXL  | 
 Open  | 
 pins 1 & 2, 3 & 4 closed  | 
 pins 1 & 2, 3 & 4 closed  | 
| 
 AM486DX  | 
 Open  | 
 pins 1 & 2, 3 & 4 closed  | 
 pins 1 & 2 closed  | 
| 
 CX486DX  | 
 pins 2 & 3 closed  | 
 pins 1 & 2, 3 & 4 closed  | 
 pins 1 & 2 closed  | 
| 
 UMC U5S  | 
 Open  | 
 pins 2 & 3 closed  | 
 pins 3 & 4 closed  | 
| 
 AM486DXL2  | 
 Open  | 
 pins 1 & 2, 3 & 4 closed  | 
 pins 1 & 2, 3 & 4 closed  | 
| 
 SL80486DX  | 
 pins 1 & 2, 3 & 4 closed  | 
 pins 1 & 2, 3 & 4 closed  | 
 pins 1 & 2 closed  | 
| 
 80486DX  | 
 Open  | 
 pins 1 & 2, 3 & 4 closed  | 
 pins 1 & 2 closed  | 
| 
 AM486DX2  | 
 Open  | 
 pins 1 & 2, 3 & 4 closed  | 
 pins 1 & 2 closed  | 
| 
 CX486DX2  | 
 pins 2 & 3 closed  | 
 pins 1 & 2, 3 & 4 closed  | 
 pins 1 & 2 closed  | 
| 
 SL80486DX2  | 
 pins 1 & 2, 3 & 4 closed  | 
 pins 1 & 2, 3 & 4 closed  | 
 pins 1 & 2 closed  | 
| 
 80486DX2  | 
 Open  | 
 pins 1 & 2, 3 & 4 closed  | 
 pins 1 & 2 closed  | 
| 
 80486DX2 (WB)  | 
 pins 1 & 2, 3 & 4 closed  | 
 pins 1 & 2, 3 & 4 closed  | 
 pins 1 & 2 closed  | 
| 
 80486DX4  | 
 pins 1 & 2, 3 & 4 closed  | 
 pins 1 & 2, 3 & 4 closed  | 
 pins 1 & 2 closed  | 
| 
 CPU TYPE CONFIGURATION (CON’T)  | |||
| 
 Type  | 
 JP17  | 
 JP18  | 
 JP19  | 
| 
 CX486S  | 
 2 & 3, 4 & 5  | 
 1 & 2, 3 & 4, 5 & 6  | 
 1 & 2, 3 & 4, 5 & 6  | 
| 
 SL80486SX  | 
 5 & 6  | 
 1 & 2  | 
 1 & 2  | 
| 
 80486SX  | 
 Open  | 
 2 & 3  | 
 Open  | 
| 
 SL80486SX2  | 
 5 & 6  | 
 1 & 2  | 
 1 & 2  | 
| 
 80486SX2  | 
 Open  | 
 2 & 3  | 
 Open  | 
| 
 AM486DXL  | 
 1 & 2  | 
 2 & 3  | 
 2 & 3  | 
| 
 AM486DX  | 
 Open  | 
 2 & 3  | 
 Open  | 
| 
 CX486DX  | 
 2 & 3, 4 & 5  | 
 1 & 2, 3 & 4, 5 & 6  | 
 1 & 2, 3 & 4  | 
| 
 UMC U5S  | 
 1 & 2  | 
 2 & 3  | 
 2 & 3  | 
| 
 AM486DXL2  | 
 1 & 2  | 
 2 & 3  | 
 2 & 3  | 
| 
 SL80486DX  | 
 5 & 6  | 
 1 & 2  | 
 1 & 2  | 
| 
 80486DX  | 
 Open  | 
 2 & 3  | 
 Open  | 
| 
 AM486DX2  | 
 Open  | 
 2 & 3  | 
 Open  | 
| 
 CX486DX2  | 
 2 & 3, 4 & 5  | 
 1 & 2, 3 & 4, 5 & 6  | 
 1 & 2, 3 & 4  | 
| 
 SL80486DX2  | 
 5 & 6  | 
 1 & 2  | 
 1 & 2  | 
| 
 80486DX2  | 
 Open  | 
 2 & 3  | 
 Open  | 
| 
 80486DX2 (WB)  | 
 3 & 4, 5 & 6  | 
 1 & 2, 4 & 5  | 
 1 & 2, 4 & 5  | 
| 
 80486DX4  | 
 5 & 6  | 
 1 & 2  | 
 1 & 2  | 
| 
 Note: Pins designated should be in the closed position.  | |||
| 
 CPU SPEED CONFIGURATION  | |||
| 
 Speed  | 
 JP7  | 
 JP8  | 
 JP9  | 
| 
 25MHz  | 
 Closed  | 
 Open  | 
 Open  | 
| 
 33MHz  | 
 Closed  | 
 Closed  | 
 Closed  | 
| 
 40MHz  | 
 Closed  | 
 Closed  | 
 Open  | 
| 
 50iMHz  | 
 Closed  | 
 Open  | 
 Open  | 
| 
 50MHz  | 
 Open  | 
 Open  | 
 Closed  | 
| 
 66iMHz  | 
 Closed  | 
 Closed  | 
 Closed  | 
| 
 75iMHz  | 
 Closed  | 
 Open  | 
 Open  | 
| 
 100iMHz  | 
 Closed  | 
 Closed  | 
 Closed  | 
| 
 CPU SPEED CONFIGURATION (80486DX4 ONLY)  | |
| 
 Speed  | 
 JP24  | 
| 
 2x  | 
 pins 2 & 3 closed  | 
| 
 3x  | 
 Open  | 
| 
 CPU VOLTAGE CONFIGURATION  | |||
| 
 Voltage  | 
 JP20  | 
 JP21  | 
 JP22  | 
| 
 3.3v  | 
 pins 2 & 3 closed  | 
 pins 2 & 3 closed  | 
 pins 2 & 3 closed  | 
| 
 3.45v  | 
 pins 2 & 3 closed  | 
 pins 2 & 3 closed  | 
 pins 1 & 2 closed  | 
| 
 5v  | 
 pins 1 & 2 closed  | 
 pins 1 & 2 closed  | 
 Open  | 
| 
 VESA WAIT STATE CONFIGURATION  | |
| 
 Wait states  | 
 JP26  | 
| 
 0 wait states  | 
 Open  | 
| 
 1 wait state  | 
 Closed  | 
| 
 BUS SPEED CONFIGURATION  | |
| 
 CPU speed  | 
 JP25  | 
| 
 <= 33MHz  | 
 Open  | 
| 
 > 33MHz  | 
 Closed  |