At 01:44 AM 28/08/2001 +0100, you wrote:
>Sorry, probably didn't make myself clear....
>Specifically what I was trying to do was specify a register to be read
>rather than reading from the INDR
>
>For example, if I have a block of registers set aside for some data, I can
>clear sequential registers by:
>
>movlw MYFIRSTREG
>movwf FSR
>LOOP
>movlw 0
>movwf INDR
>incf      FSR,1
>goto    LOOP
>
>So this clears an infinite number of registers. In practice a quick decfsz
>would limit it. In practice however, we often want to READ from one and copy
>it into the next.
>Clearly this could be done using
>
>movf READFROM1,F
>movwf MOVETO1
>movf READFROM2,F
>movwf MOVETO2
>.........
>
>etc, etc
>But surely it would be better if an indirect addressing system or some
>work-around meant you could avoid explicitly stating such commands. I ask
>because I need to copy 96 registers from one page to another and I don't
>want to end up writing 96*2 lines of code.......

You can still use the FSR. Just keep 2 variables as pointers.
Do the 2 banks of registers line up? (but on different banks)
If so, you can do it in a loop, reading, changing bank, writing
and changing bank back again each time. I haven't tested it
but the below code should give you the idea.  :-)

start:
         movlw           .96
         movwf           count
         movlw           start_address
         movwf           fsr
loop:
         movf            indf,w
         bank1
         movwf           indf
         bank0
         decfsz          count,f
         goto            loop
all_done:

Regards...

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