BETHEL ELECTRONICS INTERNATIONAL, INC.
HYF-82481Q
| 
 Processor  | 
 CX486S/80486SX/SL80486SX/CX486DX/UMCU5/80486DX/SL80486DX/ CX486DX2/AM486DX2/80486DX2/SL80486DX2/AM486DX4/80486DX4  | 
| 
 Processor Speed  | 
 25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz  | 
| 
 Chip Set  | 
 Unidentified  | 
| 
 Max. Onboard DRAM  | 
 128MB  | 
| 
 Cache  | 
 128/256/512/1024KB  | 
| 
 BIOS  | 
 Award  | 
| 
 Dimensions  | 
 250mm x 220mm  | 
| 
 I/O Options  | 
 32-bit VESA local bus slots (3)  | 
| 
 NPU Options  | 
 None  | 
| 
 CONNECTIONS  | |||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 Chassis fan power  | 
 CN1  | 
 Turbo switch  | 
 JP9  | 
| 
 Speaker  | 
 JP6  | 
 Power LED & keylock  | 
 JP10  | 
| 
 Reset switch  | 
 JP7  | 
 32-bit VESA local bus slots  | 
 SL1 - SL3  | 
| 
 Turbo LED  | 
 JP8  | ||
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Jumper  | 
 Position  | |
| 
 »  | 
 CMOS memory normal operation  | 
 JP3  | 
 Open  | 
| 
 CMOS memory clear  | 
 JP3  | 
 Closed  | |
| 
 »  | 
 Turbo switch enabled  | 
 JP9  | 
 Open  | 
| 
 Turbo switch disabled  | 
 JP9  | 
 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  | 
 (1) 512K x 36  | 
 NONE  | 
 NONE  | 
 NONE  | 
| 
 4MB  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
 (1) 512K x 36  | 
 NONE  | 
| 
 4MB  | 
 (1) 512K x 36  | 
 (1) 512K x 36  | 
 NONE  | 
 NONE  | 
| 
 4MB  | 
 (1) 1M x 36  | 
 NONE  | 
 NONE  | 
 NONE  | 
| 
 5MB  | 
 (1) 256K x 36  | 
 (1) 1M x 36  | 
 NONE  | 
 NONE  | 
| 
 6MB  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
 (1) 1M x 36  | 
 NONE  | 
| 
 6MB  | 
 (1) 512K x 36  | 
 (1) 1M x 36  | 
 NONE  | 
 NONE  | 
| 
 8MB  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
 (1) 512K x 36  | 
 (1) 1M x 36  | 
| 
 8MB  | 
 (1) 512K x 36  | 
 (1) 512K x 36  | 
 (1) 1M x 36  | 
 NONE  | 
| 
 8MB  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 NONE  | 
 NONE  | 
| 
 10MB  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
| 
 12MB  | 
 (1) 512K x 36  | 
 (1) 512K x 36  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
| 
 12MB  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 NONE  | 
| 
 16MB  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
| 
 16MB  | 
 (1) 4M x 36  | 
 NONE  | 
 NONE  | 
 NONE  | 
| 
 17MB  | 
 (1) 256K x 36  | 
 (1) 4M x 36  | 
 NONE  | 
 NONE  | 
| 
 18MB  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
 (1) 4M x 36  | 
 NONE  | 
| 
 18MB  | 
 (1) 512K x 36  | 
 (1) 4M x 36  | 
 NONE  | 
 NONE  | 
| 
 20MB  | 
 (1) 512K x 36  | 
 (1) 512K x 36  | 
 (1) 4M x 36  | 
 NONE  | 
| 
 20MB  | 
 (1) 1M x 36  | 
 (1) 4M x 36  | 
 NONE  | 
 NONE  | 
| 
 24MB  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (1) 4M x 36  | 
 NONE  | 
| 
 32MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 NONE  | 
 NONE  | 
| 
 32MB  | 
 (1) 8M x 36  | 
 NONE  | 
 NONE  | 
 NONE  | 
| 
 36MB  | 
 (1) 512K x 36  | 
 (1) 512K x 36  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
| 
 36MB  | 
 (1) 1M x 36  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 NONE  | 
| 
 36MB  | 
 (1) 1M x 36  | 
 (1) 8M x 36  | 
 NONE  | 
 NONE  | 
| 
 40MB  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
| 
 40MB  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (1) 8M x 36  | 
 NONE  | 
| 
 48MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 NONE  | 
| 
 48MB  | 
 (1) 4M x 36  | 
 (1) 8M x 36  | 
 NONE  | 
 NONE  | 
| 
 64MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
| 
 64MB  | 
 (1) 16M x 36  | 
 NONE  | 
 NONE  | 
 NONE  | 
| 
 64MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (1) 8M x 36  | 
 NONE  | 
| 
 64MB  | 
 (1) 8M x 36  | 
 (1) 8M x 36  | 
 NONE  | 
 NONE  | 
| 
 DRAM CONFIGURATION (CON’T)  | ||||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
 Bank 2  | 
 Bank 3  | 
| 
 65MB  | 
 (1) 256K x 36  | 
 (1) 16M x 36  | 
 NONE  | 
 NONE  | 
| 
 68MB  | 
 (1) 1M x 36  | 
 (1) 16M x 36  | 
 NONE  | 
 NONE  | 
| 
 68MB  | 
 (1) 1M x 36  | 
 (1) 8M x 36  | 
 (1) 8M x 36  | 
 NONE  | 
| 
 72MB  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (1) 16M x 36  | 
 NONE  | 
| 
 72MB  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (1) 8M x 36  | 
 (1) 8M x 36  | 
| 
 80MB  | 
 (1) 4M x 36  | 
 (1) 16M x 36  | 
 NONE  | 
 NONE  | 
| 
 80MB  | 
 (1) 4M x 36  | 
 (1) 8M x 36  | 
 (1) 8M x 36  | 
 NONE  | 
| 
 96MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (1) 16M x 36  | 
 NONE  | 
| 
 96MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (1) 8M x 36  | 
 (1) 8M x 36  | 
| 
 96MB  | 
 (1) 8M x 36  | 
 (1) 8M x 36  | 
 (1) 8M x 36  | 
 NONE  | 
| 
 128MB  | 
 (1) 16M x 36  | 
 (1) 16M x 36  | 
 NONE  | 
 NONE  | 
| 
 128MB  | 
 (1) 8M x 36  | 
 (1) 8M x 36  | 
 (1) 8M x 36  | 
 (1) 8M x 36  | 
| 
 CACHE CONFIGURATION  | |||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
 TAG  | 
| 
 64KB  | 
 (4) 8K x 8  | 
 (4) 8K x 8  | 
 (1) 8K x 8  | 
| 
 128KB  | 
 (4) 32K x 8  | 
 NONE  | 
 (1) 8K x 8  | 
| 
 256KB  | 
 (4) 32K x 8  | 
 (4) 32K x 8  | 
 (1) 32K x 8  | 
| 
 512KB  | 
 (4) 64K x 8  | 
 NONE  | 
 (1) 32K x 8  | 
| 
 1MB  | 
 (4) 128K x 8  | 
 (4) 128K x 8  | 
 (1) 32K x 8  | 
| 
 CPU TYPE CONFIGURATION  | |||
| 
 Type  | 
 JP11  | 
 JP12  | 
 W3  | 
| 
 80486SX  | 
 pins 2 & 3 closed  | 
 pins 2 & 3 closed  | 
 pins 1 & 2 closed  | 
| 
 80486DX  | 
 pins 2 & 3 closed  | 
 pins 2 & 3 closed  | 
 pins 2 & 3 closed  | 
| 
 80486DX2 (3.3v)  | 
 pins 1 & 2 closed  | 
 pins 1 & 2 closed  | 
 pins 1 & 2 closed  | 
| 
 80486DX2 (5v)  | 
 pins 2 & 3 closed  | 
 pins 2 & 3 closed  | 
 pins 2 & 3 closed  | 
| 
 80486DX4 (3.3v)  | 
 pins 1 & 2 closed  | 
 pins 1 & 2 closed  | 
 pins 2 & 3 closed  | 
| 
 80486DX4 (5v)  | 
 pins 2 & 3 closed  | 
 pins 2 & 3 closed  | 
 pins 2 & 3 closed  | 
| 
 CPU SPEED CONFIGURATION  | |
| 
 Speed  | 
 W1  | 
| 
 25MHz  | 
 Open  | 
| 
 33MHz  | 
 pins 1 & 2, 3 & 4 closed  | 
| 
 40MHz  | 
 pins 3 & 4 closed  | 
| 
 50iMHz  | 
 Open  | 
| 
 50MHz  | 
 pins 1 & 2 closed  | 
| 
 66iMHz  | 
 pins 1 & 2, 3 & 4 closed  | 
| 
 75iMHz  | 
 Open  | 
| 
 100iMHz  | 
 pins 1 & 2, 3 & 4 closed  |