Sorry, I didn't mean to mislead about the 'leading zeros. I was just
referring to the
fact that for the sake of brevity I didn't list the first 20 or so previous
additions of 0+0+carry of zero.

Mike Jones.
----- Original Message -----
From: "Ray Gallant" <rayg@NB.SYMPATICO.CA>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Sunday, February 02, 2003 7:49 PM
Subject: Re: [PIC]: Binary to Packed BCD Conversion Problem


> ----- Original Message -----
> From: "Jon M (Mike) Jones" <pmjones3@ATTBI.COM>
> To: <PICLIST@MITVMA.MIT.EDU>
> Sent: Monday, February 03, 2003 11:41 PM
> Subject: Re: [PIC]: Binary to Packed BCD Conversion Problem
>
>
> > A little more information;
> >
> > The following are examples of two binary to BCD conversions with the
left
> > column
> > showing what the intermediate results should be and the right column
> showing
> > what the observed intermediate results were. (Leading additions of zeros
> > ignored.)
> > I haven't thought of a way to dig any deeper with my very limited debug
> > tools but my
> > first impression is that DAW isn't always generating a carry when I
think
> it
> > should.
> >
> > for 0x2FF
> >     1                  1
> >     2                  2
> >     5                  5
> >   11                11
> >   23                23
> >   47                47
> >   95                95
> > 191                91
> > 383                83
> > 767                67
> > Fails to add and/or convert (daw) 95+95+1 correctly
> >
> > for 0x8FF
> >      1                 1
> >      2                 2
> >      4                 4
> >      8                 8
> >    17               17
> >    35               35
> >    71               71
> >  143             143
> >  287             287
> >  575             475
> > 1151            951
> > 2303          1903
> > Fails to add and/or convert (daw) 287+287+1 correctly
> >
> > Mike Jones
> >
> > ----- Original Message -----
> > From: "Bob Ammerman" <rammerman@ADELPHIA.NET>
> > To: <PICLIST@MITVMA.MIT.EDU>
> > Sent: Monday, February 03, 2003 4:35 AM
> > Subject: Re: [PIC]: Binary to Packed BCD Conversion Problem
> >
> >
> > > Jon,
> > >
> > > Very interesting. I'll take a look at this when I get a chance.
> Hopefully
> > in
> > > the next day or so.
> > >
> > > Bob Ammmerman
> > > RAm Systems
> > >
> I have some code in assembler released for a 16C74 as part of a glass LCD
> project which is a conversion to 5 digit BCD.  I believe the leading zeros
> where taken care of in different routing (printing to LCD)  Good Luck.
> {slewrate}
>
> --
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>

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