Date: Thu, 23 Jan 1997 19:00:55 +0200 (IST) From: Eli Zaretskii To: David Beck cc: djgpp AT delorie DOT com Subject: Re: DJGPP 32-bit question In-Reply-To: <199701231638.RAA10468@mail.matav.hu> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII On Thu, 23 Jan 1997, David Beck wrote: > Since I am not a DOS expert, I don't know that under DOS , isn't it > possible to make a run-time system, say extender, that support > multiple threads ( with the same data segment ) and multiple > processes ( with different data segment ) ? It's possible, you just have to work harder, because DOS itself has no system calls to support multi-tasking, so you need to write the entire machinery by yourself. In fact, DOS makes it even harder due to its non-reentrant nature, so you need to serialize access to DOS calls.