[Info-vax] VMS on Raspberry Pi 5

[Charlie Gibbs]

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.

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