public void cmpb_im()
    {
        int t,r;
       t=IMMBYTE();
       r = (m6809.b - t) & 0xFFFF;
       CLR_NZVC();
       SET_FLAGS8(m6809.b,t,r);
       if(m6809log!=null) fprintf(m6809log,"M6809#%d cmpb_im :PC:%d,PPC:%d,A:%d,B:%d,D:%d,DP:%d,U:%d,S:%d,X:%d,Y:%d,CC:%d,EA:%d\n", cpu_getactivecpu(),m6809.pc,m6809.ppc,m6809.a,m6809.b,getDreg(),m6809.dp,m6809.u,m6809.s,m6809.x,m6809.y,m6809.cc,ea);
        

    }