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hi

rtc work very fast in bochs, how can i setup rtc in boches?

Edit the bochsrc file and set the clock line to:
clock: sync=slowdown, time0=local
Also set the CPU's ips value to some speed less than or equal to what your computer can do.

This change also seems to make Bochs' PC speaker work more reliably (though still not quite properly).

it doesn't work and generate this error:

Bochs is exiting with the following message:
[ ] bochsrc.txt: directive 'clock' not understood

Not using an ancient version of bochs helps