----- 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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