inverting all bits in a byte

[mpgmike]

There is a simple ASM command, COMF. This is what it would look like:

@ BANKSEL _byteA
@ COMF _byteA, F

The first line moves the BSR (Bank Select Register) to the BANK containing your variable. The variable is preceded by an underscore for ASM; _byteA.

The second line executes the command, Compliment F (F is your variable). The appending ", F" puts the result back in your variable, byteA.

Hope this helps

[Dick Ivers]

Use the ^ operator for Bitwise Exclusive OR

ByteA = ByteA ^ %11111111 Inverts the bits of ByteA

[queenidog]

thanks Dick