On Friday, 18 March 2016 20:28:41 UTC, Andreas Kohlbach  wrote:
> I was reading a British game magazine from June 1984 (is available as PDF
> on archive.org - if anyone cares I can try to find the download address)
> where an article says:
> 
> | Video Vault International are bringing out the Commodore Emulator for
> | £12.95. Once loaded into your machine, it emulates the Sinclair
> | operating system and allows you to run your favourite Sinclair
> | games. Commodore 64 owners should soon be able to load and run Spectrum
> | software on their machines [...]
> 
> I was curious if this works. Especially since a C64 has a 6510 CPU and a
> Spectrum an Z80.
> 
> I don't own a real Commodore 64 so emulate it with the VICE emulator. I
> also found a program in my collection which has "Spectrum Emulator
> (1985)" in its name. But although the program loads it just doesn't
> start. RUN just returns the cursor.
> 
> So I wonder if this is for real. Has anybody ever had a working Spectrum
> emulator for the Commodore 64? Not important if on the real machine or
> emulated itself.

Whitby Computers ported Sinclair BASIC to the C64 in 1985. That's probably the
emulator you have in your collection. There's a thread about it on the Lemon64
forum with a contribution from the original author. POKEs work, but there's no
Z80 emulator so 
machine code games won't run. I doubt a £12.95 emulator would include a Z80, so
I wonder if the Video Vault solution was just a rebranded version of the Whitby
Computers program, only with more marketing BS. The C128 could emulate a
Spectrum quite easily 
as it has all the required hardware, but it would be about a third the speed of
the original. So yeah, kind of pointless.

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