My apologies Jerry, your code does indeed provide
complete single line branching. :o)

So is it possible to add a macro set that turns
CJAE    x,#31,blah
into
if(x>=31) goto blah
??
-Roman


Jerry Merrill wrote:
>
> One of us missed something here:
>
> >  if(x>=31) goto blah    ==  CJAE    x,#31,blah
> and
>     if(x==7) goto womble  ==   CJE    x,#7,womble
>
> 'A SINGLE bullet-proof line' in each case
>
> I agree that 'if (x==7) goto...' is more readable (especially for all of us
> old C guys) than CJE.... but all of the loading, testing,
> branch/not-branching is contained in that single line.
>
> At 11:47 AM 6/29/01, you wrote:
> >Jerry Merrill wrote:
> > >
> > > >
> > > >One thing I do miss is some of the branching tests,
> > > >which can be a pain with the PIC asm and can cost time
> > > >and bugs.
> > > >
> > > >Something like:
> > > >if(x>=31) goto blah
> > > >else if(x==7) goto womble
> > > >
> > > >is very fast and safe to code in C but a bit of a pain
> > > >to code in PIC asm.
> > > This is the point of our CVASM16 assembler.  It adds 'higher level'
> > > instructions that handle these issues (while maintaining the lower level
> > > opcodes).  This makes it easy to see and do what you want without having to
> > > deal with double negatives and such.
> > >
> > > You mean like:
> > >          CJAE    x,#31,blah   ; Compare, Jump After or Equal
> > >          CJE     x,#7,womble  ; Compare, Jump Equal...
> >
> >Hi Jerry, it's still not quite as instinctive as
> >if(x>=31) goto blah
> >and with that format you get each line as a self
> >contained bug-proof branching system. With the
> >low-level nature of PIC processors I often get caught
> >having to load a test value somewhere, then compare
> >it with somthing else, then branch/not branch which
> >again can be another level of confusion.
> >
> >Although I love getting at the hardware directly
> >I still long for one bulletproof line of code
> >that does branching. It's the minimum I expect from
> >any decent programming language.
> >-Roman
> >
> >--
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>
> Jerry Merrill
>
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