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PICList Thread
'Multiplication with PIC'
1998\01\07@105501 by Salonen Petri NMP

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Hello!

Does anyone knows which PIC controller includes the instruction for
multiplication?
Or can I use the instruction with PICs at all?

BR   Petri Salonen
    spam_OUTpetri.salonenTakeThisOuTspamnmp.nokia.com
    www.geocities.com/ResearchTriangle/7123/

1998\01\07@134410 by Andrew Warren

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Salonen Petri NMP <.....PICLISTKILLspamspam@spam@MITVMA.MIT.EDU> wrote:

> Does anyone knows which PIC controller includes the instruction for
> multiplication? Or can I use the instruction with PICs at all?

Petri:

All the 17Cxx parts (except the non-"A" version of the 17C42)
include a single-cycle 8x8 multiply.

-Andy

=== Andrew Warren - fastfwdspamKILLspamix.netcom.com
=== Fast Forward Engineering - Vista, California
=== http://www.geocities.com/SiliconValley/2499

1998\01\07@171956 by STEENKAMP [M.ING E&E]

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Hi,

> Hello!
>
> Does anyone knows which PIC controller includes the instruction for
> multiplication?
> Or can I use the instruction with PICs at all?
>
The only PIC's with a multiplication instruction are the high-end, 17Cxx
PIC's.  They have an 8 bit by 8 bit multiply instruction.
For all the other PIC's you will have to do it in software.  This is
easily done with a shift-add routine - exactly like you would do binary
multiplication on paper.

Regards,
Niki

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