EECS 203 Mailing List
Re: Copying a register


Re: Copying a register

From: Joseph Teno <j-teno_at_avoiding.spam>
Date: Sat May 24 2008 - 23:55:18 CDT

I made that situation up just so that I could learn how to do that. I'm not
totally sure what I'm doing yet.

On 5/24/08, Robert Dick <dickrp@northwestern.edu> wrote:
>
> Joseph Teno:
> > Hi everyone,
> >
> > Say I have 00011000 in LED_REG and I want to copy that into, say,
> MEM_REG.
> > They are two different registers on two different ports. How might I go
> > about doing this?
>
> I'll answer your question but, from the question, you may be on the wrong
> path. If you want to explain more about what you are doing, maybe your
> classmates can check the idea and give suggestions.
>
> > movlw LED_REG
> > addwf MEM_REG
> >
> > and
> >
> > movlw LED_REG
>
> LED_REG is a register, not a literal (like 2). Use movfw.
>
> > movwf MEM_REG
> >
> > both do not accomplish this, and both registers are already set as
> outputs
> > in init_registers.
> >
> > Thanks.
>
> Why is MEM_REG an output?
>
> -Robert Dick-
>
>
Received on Sat May 24 23:55:18 2008

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