Software Tips
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;Save the current state on interrupt
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;(NOTE: _W must map in both Banks - e.g. 7F/FF)
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Interrupt movwf _W
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swapf STATUS,W ;Move STATUS w/o changing it
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bcf STATUS,RP0 ;Switch to page 0
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movwf _STATUS ;Save old status (swapped)
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.
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.
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.
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swapf _STATUS,W ;Load old STATUS (& unswap)
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movwf STATUS ;also restores old page#
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swapf _W,F
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swapf _W,W
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retfie
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