Timer problem with bochs

jerryleecooper · Post by **jerryleecooper** » Fri Aug 24, 2007 8:13 pm

I played with the PIT a bit, and I saw some problem with one emulator. Bochs get it all wrong. Qemu and Virtual PC shows the processes correctly, their messages at correct frequency, but bochs is too fast. I just hope it's not a newbie error, but there's no shame if it is

pcmattman · Post by **pcmattman** » Fri Aug 24, 2007 9:23 pm

Bochs tries to emulate as fast as possible, which is why the PIT is sometimes really fast and sometimes really slow.

JamesM · Post by **JamesM** » Sat Aug 25, 2007 3:55 am

adding this:

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clock: sync=realtime

To your bochsrc puts it at a more reasonable rate. I still have reason to believe it's incorrect though (slightly too fast)

Combuster · Post by **Combuster** » Sat Aug 25, 2007 4:58 am

using

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clock: sync=slowdown

will slow down bochs to the correct speed. The realtime clock is only an approximation

Lprogster · Post by **Lprogster** » Sat Aug 25, 2007 5:41 am

Yeah, I had this problem a while ago... I don't know why it is the default timing!