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Set a default division rate

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Stop showing the warning for illegal registers
Extra protection before starting RTC timer.


Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@961
This commit is contained in:
Sjoerd van der Berg 2003-04-23 19:31:04 +00:00
parent bbe3ba5120
commit 1651123cbf
1 changed files with 5 additions and 2 deletions
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7
src/hardware/cmos.cpp
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@ -49,7 +49,7 @@ static void cmos_timerevent(void) {
static void cmos_checktimer(void) {
PIC_RemoveEvents(cmos_timerevent);
if (!cmos.timer.div && !cmos.timer.enabled) return;
if (!cmos.timer.div || !cmos.timer.enabled) return;
if (cmos.timer.div<=2) cmos.timer.div+=7;
cmos.timer.micro=(Bitu) (10000000.0/(32768.0 / (1 << (cmos.timer.div - 1))));
LOG(LOG_PIT,"RTC Timer at %f hz",1000000.0/cmos.timer.micro);
@ -89,7 +89,7 @@ static void cmos_writereg(Bit32u port,Bit8u val) {
break;
default:
cmos.regs[cmos.reg]=val & 0x7f;
LOG(LOG_ERROR|LOG_BIOS,"CMOS:Unhandled register %x",cmos.reg);
// LOG(LOG_ERROR|LOG_BIOS,"CMOS:WRite to unhandled register %x",cmos.reg);
}
}
@ -115,5 +115,8 @@ void CMOS_Init(Section* sec) {
IO_RegisterWriteHandler(0x71,cmos_writereg,"CMOS");
IO_RegisterReadHandler(0x71,cmos_readreg,"CMOS");
cmos.timer.enabled=false;
cmos.reg=0xa;
cmos_writereg(0x71,0x26);
}