Problems with clock and benchmark timing on sam460ex.
  • MorphOS Developer
    cyfm
    Posts: 537 from 2003/4/11
    From: Germany
    1265 MHz is indeed wrong and that is what causes your timing/clock issues. There have been some Sam460 boards which use a different onboard reference clock, namely 50Mhz instead of 55Mhz. The 3.9 boot.img assumes a 55MHz clock which causes the off by factor 1.1 result.
  • »10.11.16 - 12:26
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  • Butterfly
    Butterfly
    Mozzerfan
    Posts: 99 from 2016/10/5
    Quote:

    cyfm wrote:
    1265 MHz is indeed wrong and that is what causes your timing/clock issues. There have been some Sam460 boards which use a different onboard reference clock, namely 50Mhz instead of 55Mhz. The 3.9 boot.img assumes a 55MHz clock which causes the off by factor 1.1 result.


    Thanks for your answer. One question though: is this fixed in morphos 3.10 :) ?

    Edit: Acube has a nice utility to check the reference clock (checkbaseclock). It's included with the new version of uboot. I just executed this utility again, and indeed it says my sam has a 50 Mhz. clock.



    [ Edited by Mozzerfan 10.11.2016 - 22:31 ]
  • »10.11.16 - 12:46
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  • Butterfly
    Butterfly
    Mozzerfan
    Posts: 99 from 2016/10/5
    Hi all,
    This problem still exists with morphos 3.12. Will this be fixed in a future update, or should I give up hope.
    It sure would be nice if it would be fixed, because I then can reliably run some benchmarks (radeon, blender, lame etc).
  • »26.10.19 - 08:55
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