Quite plain and simple, my question is what are the commands SKPNC and SKPZ?
I see they are used in this macro but what do they do?  I don't see them on
any of my data sheets!



>>sub_word_literal: macro aaa, lll
>>
>>   movlw   low (~(lll) + 1)
>>   addwf   aaa+1, f
>>   movlw   high ((~(lll) + 1) & h'ffff')
>>   skpnc
>>   addlw   1
>>   skpnc
>>   skpz
>>   addwf   aaa, f
>>   endm


Thanks in advance for any info,
Brian