American Megatrends Pegasus Service manual

Jumper Settings
Pegasus (Series 759)
CPU Speed J-16 J-17 J-18 J-19 J-21 J-22
200 MHz x x 1 * 2 3x
233 MHz x x 1 * 2 3.5x
266 MHz x x 1 * 2 4x
300 MHz x x 1 * 2 4.5x
333 MHz x x 1 * 2 5x
x = short pins
J-22
MUL Pins 1 - 2 Pins 3 - 4 Pins 5 - 6 Pins 7 - 8
3x xXx
3.5x x x
4x x x x
4.5x x x
5x x x x
x = short pins
Core Voltages for J-12
Voltage 1 - 6 2 - 7 3 - 8 4 - 9 5 - 10
3.50 Volts x x x x
3.40 Volts x x x
3.3 Volts x x x
3.1 Volts x x x
3.0 Volts x x
2.9 Volts x x
2.8 Volts x
2.7 Volts x x x
2.6 Volts x x
2.4 Volts x
2.3 Volts x x
2.2 Volts x
2.1 Volts x
2.05 Volts x x x x x
2.0 Volts x x x x
1.95 Volts x x x x
1.90 Volts x x x
1.85 Volts x x x x
1.8 Volts x x x
None None
J-12 - CPU Core Voltage may not be on all boards
x = short pins
CMOS Drain
J29 - Clear CMOS, Erase Password
Open = Normal operation (factory setting) Shorted = The contents of CMOS Ram are destroyed