How do I make sleep/wait on Rust without std?

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I'm trying to make OS that does VGA text animation thing, but it's really fast as it processes as fast as it can.

So I wanna make the "wait" function and wait like 100ms each motions but I have no idea how to make it without using std crate.

So the question, how do I make sleep/wait on Rust without std?

Thanks

rust operating-system
1 Answers

You can read the processor clock with the rdtsc instruction and do a hlt loop until the required time passes. Or you can read the CMOS clock, but that will only have a second resolution.

user_19781970
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