Comparing MS-DOS and DR-DOS

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Date: September 1988


Synopsis

I thought Microsoft never tested other OSes?


Snippet

From: pascalm Thu Sep 22 14:42:18 1988
To: billg
Cc: aaronr; philba; russw; tomle
Subject: RE: DR DOS

Here- follow the three "differences" (between DR and MS DOS) that Aaron has been able to find so far. Except for these differences,the two OSs behave similarly, including undocumented calls.

The bottom line is that, given Aaron's current findings, an application can identify DR DOS. However, most apps usually have no business making calls that will let them decide which DOS (MS or DR) they are running on.

Do you think differently ? ...


Full Exhibit

http://boycottnovell.com/wp-content/uploads/2009/01/px00034_a.pdf

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