Date   : Sun, 31 Jul 2005 13:31:42 +0200
From   : "Dethmer Kupers" <dkupers@...>
Subject: Re: Hello/Recognize this?

Mike,

For two more pics of the speedup, see 8bs (pictures, computers, CTRL-F for
'Dethmer').
I should have the Elektuur article somewhere. I'll try to find it and scan
it one of these days (i don't have a scanner at home).

A simple loop (time=0,for i=1 to 10000, next, print time) takes 7,98 sec on
a normal Electron, with speedup it takes 5,27 secs. The BBC does the same
loop in 5,22 secs.
It only speeds up RAM-access in the lower 8K (a 6264 is used).

Dethmer.



-----Oorspronkelijk bericht-----
Van: Majordomo List Manager [mailto:majordomo@...]Namens Mike
Tomlinson
Verzonden: Sunday, July 31, 2005 09:26
Aan: bbc-micro@...
Onderwerp: Re: [BBC-Micro] Hello/Recognize this?


In article <EAEGLOCBDLPKAAHGMJJGMENICAAA.dkupers@...>, Dethmer Kupers
<dkupers@...> writes

>My name is Dethmer Kupers, I'm from the Netherlands.

Hi Dethmer, welcome to the list.

>Picture 4: Closeup of a piece of the speedup. It maps a piece of memory to
a
>6264 instead of the 'slow' default Electron RAM chips. For the 6264 the
>Electron doesn't have to slow down. I'll remove the discdrive one of these
>days and make a better picture of it.
>
>I've also got the schematics for both expansions somewhere, if anyone is
>interested i can put them under a scanner.

Yes please, I'm quite interested in that speedup board.  Do you have the
original article from Electuur you could scan?  How much of speedup does
it give?

Mike