I have to freshen up an old app (not written in BASIC!) which I want to run under DOS and XP. Currently the app works around a loop which checks the keyboard, comm ports, clock, etc and does a nice job - when run under MSDOS. Under XP, it hogs CPU because of this loop. Just wondering what is the optimal method with PBDOS for avoiding this scenario, as I'm considering a rewite in PB for DOS. The dead same code would have to run in MSDOS/DRDOS or as an XP console application.
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