From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stas Sergeev <stsp@aknet.ru>
Subject: Re: How to free CPU time?
Date: Fri, 05 Aug 2005 17:25:20 +0400
Message-ID: <42F368C0.2010508@aknet.ru>
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Hello.

Alain wrote:
> What is the best method to release cpu usage inside dosemu?
int 28h is known to be the most generic
way of doing this, unrelated to dosemu.
int 2fh/ax=1680h works well too.

> The problem is: I have made a program that runs in a loop checking 
> keyboard, mouse, network, etc.. It cannot call bios read key function 
> and lock there.
But it surely can (and should) call the
bios function to check the available
keystroke: int 16h/ah=1, and it will
release the CPU time too.

> If I do HLT, will it restart 
> after "interrupt"
Yes, but AFAIK dosemu won't release the
CPU cycles on hlt. Its use is not recommended.

> PS: I still have the problem below
Not reproduceable.