From:	"Florian X" <dos DOT fire AT aon DOT at>
Newsgroups:	comp.os.msdos.djgpp
References:	<0CF260C495FED111A6610000F866308D0AC366C5 AT mail3 DOT ntu DOT edu DOT sg>
Subject:	Re: real mode & protected mode
Date:	Fri, 18 Feb 2000 18:34:25 +0100
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>We have 16 bit real mode, 16 bit and 32 bit protected mode program.
>I wish to know is there have any 32 bit real mode program??


There are 3 modes: REAL mode, protected mode and virtural V86 mode:

REALMODE:

You have only 1MB ram (640k), you can use interrupts.

PROTECTED MODE:

You can use all ram and flat memory, have no interrupts, so you need an DPMI
surver which switch back to realmode to start a interrupt.

VIRTUAL V86:

It simulate realmode under protected mode (DOS and Windows taskmanager use
it)
The program thinks, that it runs in protected mode and that it is the once
program.


What's between 16 and 32 bit?

That meens that the program have access to 64MB or 4GB.
and that the hardware support 32-bit arithmetic.

This is a very SHORT information!
I hope I could help you

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