CPU_STATE
tw32(cpu_base + CPU_STATE, 0xffffffff);
tw32(RX_CPU_BASE + CPU_STATE, 0xffffffff);
tw32(cpu_base + CPU_STATE, 0xffffffff);
tw32(cpu_base + CPU_STATE, 0xffffffff);
tw32(cpu_base + CPU_STATE, 0xffffffff);
tw32(cpu_base + CPU_STATE, 0xffffffff);