[Simh] Re: 11/780 simulation

Tim Shoppa shoppa at trailing-edge.com
Tue Jun 15 16:42:27 EDT 2004


>> - the CPU must support all the VAX instructions, not just the VAX subset.  That
>> includes decimal, obsolete character string, H_floating, and EDITPC (argh!)

> Compatibility mode?

For running VMS V5.0 or later, I don't think you'd need compatibility
mode.

But (in my limited view) the main reason to want to simulate an 11/780
would be to run VMS V1.0, and in that case compatibility mode would
be a ncessity.  Several fundamental VMS components ran in compatibility
mode up through V4.something.

Tim.



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