American Megatrends Atlas III PCI Install Manual

Jumper Settings

Atlas PCI III
(Series 757)
CPU Speed J-5
75 MHz
90 MHz
100 MHz
120 MHz
133 MHz
150 MHz
166 MHz
180 MHz
200 MHz
233 MHz
x = short pins
CPU Speed J-5
133 MHz
166 MHz
200 MHz
233 MHz
266 MHz
300 MHz
333 MHz
366 MHz
x = short pins

System Jumpers

J15 PCI Bus Clock:
Short pins 1-2 for 66MHz CPU Clock
Short pins 2-3 for 75MHz CPU Clock
J14 CPU Voltage:
Short pins 1-2, 3-4, and 5-6 for no VRM
All jumpers open for AMD K6 and Intel P55C MMX
J2 External SMI
Short J2 to enable external SMI's (factory default)
J3 Refresh Enable
J3 should always be shorted

Cache Memory Configuration

Cache Size J-1
256 KB
512 KB
x = short pins
Pentium
J-6
x x
x
x
x
x
x
x
x
x
x
AMD K6
J-6
x
x
x
x
x
x
x
x
J-9
1 * 2
x 2 * 3
J-7 J-8
x
x
x x
x x
x
x
J-7 J-8
x
x x
x
x
x x
x
J-10 J-11
1 * 2 1 * 2
2 * 3 2 * 3
J-16
x
x
x
x
J-12
1 * 2
2 * 3