recursive emulation

Pete Turnbull pete at
Tue Jan 24 15:50:07 CST 2017

On 24/01/2017 22:19, Jecel Assumpcao Jr. wrote:
> Pete Turnbull wrote:
>> Interesting.  You know that Acorn had a software PC emulator for the
>> Archimedes called PCEmu, on sale in late 1987?

> I don't remember if I was aware of this at that time, but it is very
> likely and that could have been the inspiration for our project.

> In the RiscPC era they used actual Intel processors instead of (or was
> it as an alternative to) software emulation.

Instead of.  There were third-part hardware addons using Intel CPUs by 
1989 or thereabouts.

>> Amusingly, it ran MS-DOS better than  [...] custom MS-DOS on an 80186.

> Many people think Intel was stupid to have the 80186 be incompatible
> with the PC but they forget that this processor was practically finished
> by the time the PC came out and was launched just a few months later,

And it was evidently really meant for embedded applications rather than 
as a CPU for IBM-compatible PCs.

Pete Turnbull

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