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SysImage 20150312 is released
2015 年 03 月 12 日
22:54:23
Android_Lin
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Forum Posts: 211
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2014 年 04 月 01 日
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We add two overclocking options that are 444MHz and 500MHz in SysImage tool.
Download the SysImage 20150312: http://www.86duino.com/?page_id=8923
and see how to overclock 86Duino: http://www.86duino.com/index.php?p=7780
:)

2015 年 03 月 13 日
02:48:34
Glaux
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2013 年 10 月 11 日
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Will it be able to cook eggs on that tiny metal heatspreader then? :)
Does the vortex cpu has some internal temperature sensor like intel DTS?
Is it possible change frequency on the fly via some MSRs when needed or it must reset?

2015 年 03 月 14 日
01:11:54
Android_Lin
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Forum Posts: 211
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2014 年 04 月 01 日
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Does the vortex cpu has some internal temperature sensor like intel DTS?

Hello, Glaux,
Yes, there is a temperature sensor in Vortex86EX and you can call cpuTemperature() to read CPU internal temperature. In addition, we measured the temperature on the surface of CPU after overclocking, the result is following:

Vortex86EX at 444MHz: 59.3 °C
http://www.roboard.com/Files/t.....444MHz.png
Vortex86EX at 500MHz: 67.2 °C
http://www.roboard.com/Files/t.....500MHz.png

Is it possible change frequency on the fly via some MSRs when needed or it must reset?

The CPU frequency only can be set by BIOS in SPI flash and the addresses are 3FFB6h, 3FFB7h, 3FFBBh, 3FFBCh, 3FFBDh, 3FFBFh, you can refer the code of SysImage tool on GitHub to see what the setting value.

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