In SX Microcontrollers, SX/B Compiler and SX-Key Tool, JonnyMac wrote:

Okay, I'll start asking the questions and you starting answering them.  Deal?....  :tongue: 

In fact, while either syntax works, you're wrong in your assumption.  Some registers, like WKPND_B, actually exchange values on what looks like an assignment.  In this case what was in WKPND_B ends up in ledBtn and vice-versa.

Now, let me ask two serious questions:
1. Did you actually run my code -- unmolested -- to see that it does in fact work?
2. If you answered 'No' to number 1, why should I or anyone else every spend our own time again to help you?

I know you're loathe to crack open the SX documentation but if you ever actually do, section 7.2 will explain the exchange of values.  I tend to favor syntax that more closely models SX Assembly, hence I use:

[code]  WKPND_B = ledBits[/code]
... where in assembly (or as compiled by SX/B) it would be:

[code]  MODE  #$09
  MOV   !RB,ledBtn 
  MOV   ledBits, W[/code]
The documentation will tell you that W now contains the contents of the WKPND_B register.  SX/B takes care of moving W to the variable that was used.

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