SCC_SCCM
qmc_write16(qmc->scc_regs + SCC_SCCM, 0x0000);
qmc_write16(qmc->scc_regs + SCC_SCCM, 0x0000);
qmc_write16(qmc->scc_regs + SCC_SCCM,
qmc_write16(qmc->scc_regs + SCC_SCCM, 0);
qmc_write16(qmc->scc_regs + SCC_SCCM, 0);