Exiting a subroutine without using return?

[Nigel Goodwin]

Now i need to superimpose RUNSEQ and RUNSEQ2 storing result in W. By superimpose i mean like this...

RUNSEQ        10001000
RUNSEQ2       01000100

Result in W   11001100

I thought i could use an OR but i cant seem to figure it out. Your help would be helpful (yet again)!

How about:

movf   RUNSEQ, w
iorwf   RUNSEQ2, w

 

[davepusey]

Yeah that did it.

 

[Matt(Pic progger)]

:idea:

Another method of goto'ing (does that sound right??) from a subroutine is to use a flag...... ok an example is in order.....


MAIN
CALL GET_RS232 ;CALL OUR RS232 SUB

BTFSC FLAG,NO_RS232 ;DID WE GET ANY RS232?
GOTO RS232_BAD ;NO, SO GO AND DEAL WITH IT

..... REST OF MAIN


GET_RS232
BCF FLAG,NO_RS232 ;CLEAR NO_RS232 FLAG

.............. CODE TO CHECK FOR RS232
.............. IF NONE, THEN SET THE FLAG

RETURN



ok, so it's not strictly a "goto" from a subroutine, but you get the idea, this method can be usefull, for example, if we are sitting in a subroutine that wait for 1 sec, but we want to detect a switch to end the subroutine...... we can set a flag for the switch then return......

Hope this helps :wink: