Data General Eclipse: Difference between revisions

Revision as of 15:33, 13 May 2010

Revision as of 02:39, 3 June 2010

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[[PDP-11]] computers. However, it kept the simple register architecture, and the stack

was kept in a special memory address ___location, as it was on the later 32 bit [[Data General Eclipse MV/8000]].

The [[Data General AOS|AOS]] [[operating system]] was quite sophisticated, and far advanced compared to the PDP-11 offerings, with [[access control list]]s (ACLs) for file protection. ItOne wasof largelythe retainedkey unchangedgoals for the 32-bit MV/8000{{Citation needed|date=Novemberwas 2009}}to whichbe couldable nativelyto run Eclipse16-bit binaryapplications codewithout modification, whileand the [[VAX]]AOS/VS needed a completely new32-bit operating system comparedwould toindeed therun PDP16-11.bit <!--AOS I'mbinaries. not sure(By ifcontrast, thisalthough lastthe sentence[[VAX-11]] belongscould hererun or[[PDP-11]] not;code thisin articlea isn'tcompatibility aboutmode, the MV/8000, isdid it?not require a "mode bit.") -->

Production problems with the Eclipse led to a rash of lawsuits in the late 1970s, after new versions of the machine were pre-ordered by many DG customers and then never arrived. After over a year of waiting, many decided to sue the company, while others simply cancelled their orders and went elsewhere. It appeared that the Eclipse was originally intended to replace the Nova outright, also evidenced by the fact that the Nova 3 series released at the same time was phased out the next year. However, strong continuing demand resulted in the Nova 4, perhaps as a result of the continuing problems with the Eclipse.