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Date: Sun, 25 May 2008 17:33:36 -0400
Message-Id: <200805252133.m4PLXarG015150@envy.delorie.com>
From: DJ Delorie <dj AT delorie DOT com>
To: djgpp AT delorie DOT com
In-reply-to: <20080525194916.3DD6C5702E7@panel.abserver.es>
	(josepmaria AT turomas DOT com)
Subject: Re: 30K Timer tic interrupt handler
References:  <20080525194916 DOT 3DD6C5702E7 AT panel DOT abserver DOT es>
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> A simple solution is to write a resident program with a 16 bit
> compiler (like borladc). You can pass information with your 32 bits
> progam and your 16 bit program via software interrupts.

You can do 16 bit handlers with djgpp, no need to get a separate
compiler for it.

The problem here is that at 30,000 interrupts per second, you need
both a 16 bit and a 32 bit handler, so that interrupts never cause a
mode switch.