GN_Cme, Compare null-terminated strings
Register parameters
RST 20H, DEFW $4209
IN: BHL = extended pointer to first string (B = 0, HL is local) DE = local pointer to second string OUT: Fz = 0, strings are different Fz = 1, strings are equal Registers changed after return: ..BCDEHL/IXIY same AF....../.... different