[Info-vax] date comparison format from a program

[gérard Calliet]

Le 21/05/2019 à 18:29, Hans Bachner a écrit :
> Dave Froble schrieb am 21.05.2019 um 16:43:
>> [...]
>>
>> Now, I may be wrong, same old territory for me, but, if I was designing
>> something that had to last for a long time, I'd design it with "black
>> boxes" that perform a task, but can be replaced (inside the box) with
>> newer stuff.  As long as the "box" did what it was suppose to do, so
>> what?  More viable, probably cheaper.
>>
>> [...]
> 
> Well, this is exactly what an emulator like CHARON-VAX does.
Of course.

But the actual non emulated "box" does'nt depend on anything else, which 
cannot be the case for any emulation.

It seems very difficult to freeze all a stack with in it: some intel 
hardware and some x boards, some windows version, the emulator.

A real VAX with VMS 5.5-h4 can work years with not any reboot. I'm not 
sure it's the case with emulated solutions.