XOR woes

[HenrikOlsson]

Hi,
You don't want to use the XOR operator, you want the ^ (bitwise XOR).

A VAR BYTE
B VAR BYTE
C VAR BYTE

HSEROUT["Start",13]
A = 0 : B = 45
GOSUB Display

A = 255 : B = 45
GOSUB Display

PAUSE 10
END

Display:
C = A ^ B
HSEROUT[DEC A, " ^ ", DEC B , " = ", DEC C,13]
RETURN

Gives

Start
0 ^ 45 = 45
255 ^ 45 = 210

If it doesn't work at your end, please post the code.

/Henrik.

[ardhuru]

Henrik, thanks for that. And sure, in its basic form the '^' operator works as expected.

In this specific case, I realize that the complication(s)'s arisen because of the fact that the port being bit-manipulated has some pins which are inputs, and not to be controlled by the XOR.

I'll need to mask off those bits, I guess.

Thanks again