[Gllug] Re: Dual core AMDs

[Dylan]

On Wednesday 13 Jul 2005 20:34, Ian Northeast wrote:
> Richard Huxton wrote:
> > Ah, the joys of 6502 assembler and BASIC on the Acorn Atom. Adding
> > 10KB of RAM with 10 separate chips :-)
>
> I added, IIRC, 28K to mine. Even with piggy backed chips with one
> address pin bent out, some of it was still hanging out of the back on
> a ribbon cable:) Oh, and an overclock to a whole 2MHz. With an early
> equivalent of the "turbo" button you used to get on 486s, consisting
> of a light switch screwed into a hole cut in the case, to make the
> timing sensitive stuff work.

My father was one of the first teachers given the BBC training in my 
home town. I remember the desk in his study being covered in those 
beige boxes. On one occasion tho, he managed to put every chip in a 
128K expansion box backwards! 

>
> And BTW I thought the Z80 was a much better chip than the 6502 and
> never understood why Acorn/BBC didn't use it instead. 

Because Motorola were a partner in the BBC Micro project.

Dylan

> But the ZX81 
> was horrible and the Atom was a much nicer machine as a whole. IMHO
> of course.
>
> Regards, Ian

-- 
"The man who strikes first admits that his ideas have given out."
                                                (Chinese Proverb)
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