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Access to CNT register — Parallax Forums

Access to CNT register

tomcrawfordtomcrawford Posts: 1,129
in Propeller 2
I apparently have suffered drain bamage. I cannot find how to read the cnt register. If I say 
mov  stime, cnt      'get pulse start time
it says "error symbol cnt is not constant".

Please help.

Comments

  • Mark_TMark_T Posts: 1,981
    For prop2, use GETCT instruction. WAITCNT is replaced by WAITCTx and ADDCTx for x=1,2,3 
            getct   stime
  • RaymanRayman Posts: 15,356
    Hmm... I wonder how the new 64-bit CT register will handle rollover for wait and add...

    Guess it works out to be the same as with 32 bit CT register...
  • tomcrawfordtomcrawford Posts: 1,129
    Thank you, @Mark_T .
  • Cluso99Cluso99 Posts: 18,071
    Rayman wrote: »
    Hmm... I wonder how the new 64-bit CT register will handle rollover for wait and add...

    Guess it works out to be the same as with 32 bit CT register...

    Same as it does now. The only change is the cnt is extended to 64 bits and you can read the high 32bits. Otherwise those top 32 bits are hidden/unused.
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