Manuel Bilderbeek <[EMAIL PROTECTED]> wrote:
> > I know that the clockspeed of the MSX-computer can be increased with a
> > 'special' upgrade. In the past such 'upgrades', increasing to +/- 7 MHz,
> > existed and could be bought.
> >
> > Does anyone know of the existence of such upgrades or knows where I can find
> > such schematics? Or any information?
>
Look in old MSX magazines (like the MSX Club Magazine, which later
merged with MCM), for example numbers 31 (sept./okt.1990, original
publication of 7 MHz. design), and 34 (mrt./apr. 1991, imrovements &
corrections). Forget about 6 MHz. though, this design was always
'buggy' from the start, I doubt it's ever been perfected....
> Alwin Henseler (the hardware man of former MSX CLub Enschede) promised to me
> that he would publish a complete 7 MHz schematic on the Computer Club
> Enschede's homepage. Look for it on
>
> http://www.twente.nl/~cce/index.htm
>
No, this is not a 7 MHz. schematic, but for ANY speed (your MSX can
cope with). Actually it switches between two 'random' speeds (wide
range possible), so you can as well use it to have your MSX run on a
speed switching between 2 and 5, or 6.1 and 3.2 MHz. (whatever, don't
ask me what your MSX will do in such a case). BTW. it's probably
suited for other Z80-based systems as well, but don't bother me about
how to speed up a ZX-Spectrum or so with it, you figure that one
out...
And no, it will not be on the HOMEPAGE of the computerclub Enschede,
because we don't do all that much with MSX anymore (apart from the
occasional emulator). I do feel a stronger getting need to create
some MSX pages of my own (probably hardware-stuff mainly), but either
it will be as a 'sub-site', or it will be on some personal webpages
of mine, but not on the homepage of our computerclub.
Do look out for it though!
Alwin Henseler ([EMAIL PROTECTED])
P.S. I believe our site is still the only place where you can get a
fl. 2,50 discount on the entrance fee for the upcoming Zandvoort
fair! (check out, what you have to do for that)
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