imm_wait
if (imm_wait(vpo, VP0_FAST_SPINTMO) != (char)0xa8) {
if (!(r = imm_wait(vpo, VP0_LOW_SPINTMO))) {
if (!(r = imm_wait(vpo, VP0_LOW_SPINTMO))) {
if (imm_wait(vpo, VP0_FAST_SPINTMO) == (char)0xb8)