[Info-vax] VMS on Raspberry Pi 5

Chris Townley news at cct-net.co.uk
Mon Nov 13 12:36:53 EST 2023


On 13/11/2023 17:32, Charlie Gibbs wrote:
> On 2023-11-13, Arne Vajhøj <arne at vajhoej.dk> wrote:
> 
>> On 11/13/2023 5:26 AM, Pancho wrote:
>>
>>> I don't really know the performance penalty of emulators.
>>
>> The overhead of a non-JIT instruction set emulation
>> must be huge.
> 
> Back in my Amiga days, I played with the Transformer, a
> software emulation of an 8088 on a 68000.  It would run
> MS-DOS, but very slowly - I figured about a 10x slowdown.
> Once just for giggles I ran Z80MU (a Z80 emulation for
> MS-DOS) under the Transformer.  Under these two levels
> of emulation I fired up the CP/M BASIC interpreter and
> typed "PRINT SIN(whatever)".  It came back with the
> correct answer - 7 seconds later.
> 

That sounds like the Sinclair scientific calculator in the early 70s

-- 
Chris




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