American Megatrends Super Voyager PCI-II User Manual page 18

Step 1 Set Jumpers,
Cyrix CPU Support
This motherboard supports the Cyrix DX4 and M1SC CPUs. If installing a Cyrix DX4 or M1SC, the J2, J3, J6, J8, J9, J10, J11, J12, J13, J14,
and J15 CPU jumper settings for the 100 MHz AM486 Plus using Write-back caching should be used.
Selecting a 3.3V CPU
Set the motherboard jumpers as follows for 3.3V CPUs:
Jumper Intel 486 DX4 AMD
AM486DX2+,
AM486DX4+
J1 OPEN OPEN
J2 Short Pins 2-3 Short Pins 2-3
J3 Short Pins 1-2 Short Pins 1-2
J6 Short Pins 1-2 Short Pins 1-2
J8 OPEN Short Pins 2-3
J9 OPEN OPEN if 3X.
Short Pins 1-2 if
J10 Short Pins 1-2 Short Pins 1-2
and Pins 3-4 and 3-4.
J11 Short Pins 1-2 Short Pins 1-2
J12 OPEN OPEN if WB.
Short Pins 1-2 if
J13 OPEN Short Pins 2-3
J14 Short Pins 1-2 Short Pins 1-2
and Pins 3-4 and Pins 3-4.
J15 OPEN Short Pins 1-2
J7 OPEN OPEN
J28 If 3.3V from If 3.3V from
power supply: power supply:
Short Pins 1-2, 3- Short Pins 1-2, 3-
4, and 5-6. 4, and 5-6.
J29 If 3.3V from If 3.3V from
onboard onboard
regulator: regulator:
Short Pins 1-2, 3- Short Pins 1-2, 3-
4, and 5-6. 4, and 5-6.
J30 Short Pins 1-2. Short Pins 1-2.
Note: For 3.3V CPUs, J7 must be left OPEN.
Super Voyager PCI-II 486 ISA Motherboard User's Guide
Continued
Cyrix M7 Cyrix M9
(low voltage)
OPEN
Short Pins 2-3 Short Pins 2-3
Short Pins 2-3 Short Pins 1-2
Short Pins 1-2 Short Pins 1-2
Short Pins 1-2 Short Pins 2-3
OPEN
2X.
Short Pins 1-2 Short Pins 1-2
and 3-4
Short Pins 1-2 Short Pins 1-2
OPEN
WT
Short Pins 1-2
Short Pins 2-3. Short Pins 1-2
and Pins 3-4
Short Pins 2-3 Short Pins 1-2
OPEN
If 3.3V from If 3.3V from
power supply: power supply:
Short Pins 1-2, 3- Short Pins 1-2, 3-
4, and 5-6. 4, and 5-6.
If 3.3V from If 3.3V from
onboard
regulator: regulator:
Short Pins 1-2, 3- Short Pins 1-2, 3-
4, and 5-6. 4, and 5-6.
Short Pins 2-3. Short Pins 2-3.
AM486DX
standard 3.3V
package
OPEN OPEN
Short Pins 2-3
OPEN
OPEN
OPEN
OPEN OPEN
Short Pins 1-2
and 3-4 and 3-4
Short Pins 1-2
OPEN OPEN
OPEN OPEN
OPEN
OPEN
OPEN OPEN
If 3.3V from
power supply:
Short 1-2, 3-4,
and 5-6.
If 3.3V from
onboard onboard
regulator:
Short 1-2, 3-4,
and 5-6.
Short Pins 1-2
15