Faster SHIFTOUT without dedicated hardware, possible?

[tumbleweed]

You're right, for a PIC18 WREG is the name of a register.

If you're using a PIC16 then you have to declare a variable named WREG as I mentioned in post #9

If you're using a PIC16 then you'll have to add a definition for a WREG variable

WREG var byte

If you wanted to make the code the same for all devices then change all the references to WREG to a byte variable instead, including the SHOUT subroutine.
Here I've named it SHDATA.

SHDATA var byte

SHDATA = $55
call SHOUT