MC_REGC
while (mc146818_read(NULL, MC_REGC) & MC_REGC_PF)
while (mc146818_read(NULL, MC_REGC) & MC_REGC_PF)
while (mc146818_read(NULL, MC_REGC) & MC_REGC_AF)
return !!(mc146818_read(NULL, MC_REGC) & MC_REGC_AF);
while (mc146818_read(NULL, MC_REGC) & MC_REGC_PF)
while (mc146818_read(NULL, MC_REGC) & MC_REGC_PF)
rtc.regs[MC_REGC] |= MC_REGC_PF;
case MC_REGC:
if (rtc.idx == MC_REGC) {
rtc.regs[MC_REGC] &= ~MC_REGC_PF;