Data: UPD 15th December 2023
American Megatrends MegaRUM II Motherboard PDF Settings Manual (Updated: Friday 15th of December 2023 08:55:08 AM)
Rating: 4.8 (rated by 31 users)
Compatible devices: IB892, MegaPro, Super Voyager VLB-III, MB961 Series, Excalibur PCI, Baby Screamer LC, PMB-901LF, III.
Recommended Documentation:
Text Version of American Megatrends MegaRUM II Motherboard Manual (Summary of Contents)
(Ocr-Read of Document's Main Page, UPD: 15 December 2023)
Jumper Settings
MegaRUM II (Series 774)
If using two CPUs with different speed ratings, set the motherboard jumpers to the lower CPU
speed. When JP6 is open, the memory bus frequency is determined by the processors. When
JP6 is shorted, the memory bus frequency is forced to be 66 MHz.
66 MHz Bus
CPU Speed
Pins
1 - 2
Pins
3 - 4
Pins
5 - 6
Pins
7 - 8
233 MHz x x
266 MHz x x x
300 MHz x x x
333 MHz x x
x = short pins
100 MHz Bus
CPU Speed
Pins
1 - 2
Pins
3 - 4
Pins
5 - 6
Pins
7 - 8
350 MHz x x
400 MHz x x x
450 MHz x x
500 MHz x x
550 MHz x
600 MHz x x x
x = short pins
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