MAGUS DATA TECHNOLOGY, INC.
S486VL EDITION 1.1
| 
 Processor  | 
 80486SX/80487SX/80486DX/80486DX2/Pentium Overdrive  | 
| 
 Processor Speed  | 
 25/33/50(internal)/66(internal)MHz  | 
| 
 Chip Set  | 
 VLSI  | 
| 
 Max. Onboard DRAM  | 
 128MB  | 
| 
 Cache  | 
 None  | 
| 
 BIOS  | 
 Unidentified  | 
| 
 Dimensions  | 
 330mm x 218mm  | 
| 
 I/O Options  | 
 32-bit VESA local bus slots (2)  | 
| 
 NPU Options  | 
 None  | 
| 
 CONNECTIONS  | |||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 Turbo switch  | 
 J1  | 
 Speaker  | 
 J4  | 
| 
 Turbo LED  | 
 J2  | 
 Power LED & keylock  | 
 J5  | 
| 
 Reset switch  | 
 J3  | 
 32-bit VESA local bus slots  | 
 SL1 & SL2  | 
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Jumper  | 
 Position  | |
| 
 »  | 
 Power good signal detect from power supply  | 
 JP1  | 
 pins 1 & 2 closed  | 
| 
 Power good signal detect from board  | 
 JP1  | 
 pins 2 & 3 closed  | |
| 
 »  | 
 Monitor type select CGA/EGA/VGA  | 
 JP2  | 
 pins 1 & 2 closed  | 
| 
 Monitor type select MDA/EGA/VGA  | 
 JP2  | 
 pins 2 & 3 closed  | |
| 
 DRAM CONFIGURATION  | ||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
| 
 1MB  | 
 (4) 256K x 9  | 
 NONE  | 
| 
 2MB  | 
 (4) 256K x 9  | 
 (4) 256K x 9  | 
| 
 4MB  | 
 (4) 1M x 9  | 
 NONE  | 
| 
 5MB  | 
 (4) 1M x 9  | 
 (4) 256K x 9  | 
| 
 8MB  | 
 (4) 1M x 9  | 
 (4) 1M x 9  | 
| 
 16MB  | 
 (4) 4M x 9  | 
 NONE  | 
| 
 17MB  | 
 (4) 4M x 9  | 
 (4) 256K x 9  | 
| 
 20MB  | 
 (4) 4M x 9  | 
 (4) 1M x 9  | 
| 
 32MB  | 
 (4) 4M x 9  | 
 (4) 4M x 9  | 
| 
 64MB  | 
 (4) 16M x 9  | 
 NONE  | 
| 
 65MB  | 
 (4) 16M x 9  | 
 (4) 256K x 9  | 
| 
 68MB  | 
 (4) 16M x 9  | 
 (4) 1M x 9  | 
| 
 80MB  | 
 (4) 16M x 9  | 
 (4) 4M x 9  | 
| 
 128MB  | 
 (4) 16M x 9  | 
 (4) 16M x 9  | 
| 
 CPU TYPE CONFIGURATION  | |||
| 
 Type  | 
 JP4  | 
 JP5  | 
 JP6  | 
| 
 80486SX  | 
 pins 2 & 3 closed  | 
 pins 2 & 3 closed  | 
 pins 2 & 3 closed  | 
| 
 80487SX  | 
 pins 1 & 2 closed  | 
 pins 1 & 2 closed  | 
 pins 1 & 2 closed  | 
| 
 80486DX  | 
 pins 2 & 3 closed  | 
 pins 1 & 2 closed  | 
 pins 1 & 2 closed  | 
| 
 80486DX2  | 
 pins 2 & 3 closed  | 
 pins 1 & 2 closed  | 
 pins 1 & 2 closed  | 
| 
 Pentium Overdrive  | 
 pins 1 & 2 closed  | 
 pins 1 & 2 closed  | 
 pins 1 & 2 closed  | 
| 
 CPU SPEED CONFIGURATION  | |
| 
 Speed  | 
 JP3  | 
| 
 25MHz  | 
 pins 1 & 2 closed  | 
| 
 33MHz  | 
 pins 2 & 3 closed  | 
| 
 50iMHz  | 
 pins 1 & 2 closed  | 
| 
 66iMHz  | 
 pins 2 & 3 closed  | 
| 
 MISCELLANEOUS TECHNICAL NOTE  | 
| 
 Note:This board will handle a 80486DX4 with an adapter supplied from Magus. The settings for this adapter are unidentified by the manufacturer.  |