On Wednesday 20 June 2007 15:08, John Coppens wrote: > I was trying to install a very old DOS data acquisition program for a > friend of mine (under Linux + DOSEMU), but there seem to be strange > timing problems. > > After many unsuccessful tests (the link with the sensor wouldn't even > come up), I started suspecting timing issues. I booted the machine with a > real DOS disk and sure enough, everything worked. > > I suspect this program uses the DOS 18.xxx Hz timer for its loops. Is the > emulation of the timer under DOSEMU the same frequency? Does it depend on > setting up the 250/1000 tick/s of the kernel? DOSEMU can handle about 100 Hz for the PIT. I have a patch I can dig up that can go up to 250 (or even 1000 depending on the kernel version). It's just a quick hack and not the proper solution though. - To unsubscribe from this list: send the line "unsubscribe linux-msdos" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
