[Coco] Transplanting 512K RAM expansion?

[Fedor Steeman]

Thanks a lot, everyone! I will take this information to me and have another
look at it. Then I will try to muster the courage to meddle with my CoCo's
internals, which -of course- is always risky. (Good that I have a couple of
spares...)

Kindest regards,

Fedor

On 25/05/06, Bob Devries <devries.bob at gmail.com> wrote:
>
> Fedor, apart from removing the ram chips, the coco3 will still remain
> useable when you modify it for 512K. Removing the capacitors does not stop
> the coco3 from working as a 128K machine in any way.
> --
> Regards, Bob Devries, Dalby, Queensland, Australia
>
> Isaiah 50:4 The sovereign Lord has given me
> the capacity to be his spokesman,
> so that I know how to help the weary.
>
> website: http://www.home.gil.com.au/~bdevasl
> my blog: http://bdevries.invigorated.org/
>
> ----- Original Message -----
> From: "Fedor Steeman" <petrander at gmail.com>
> To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
> Sent: Thursday, May 25, 2006 4:24 AM
> Subject: Re: [Coco] Transplanting 512K RAM expansion?
>
>
> Thanks, Bob. I understand from what you are saying that one cannot perform
> a
> 512K transplant without rendering the source CoCo unusable, because the
> original 128K RAM chips are removed as well as several capacitators.
>
> My problem is that I have a very clean and beautiful Australian CoCo3 (for
> PAL/240V and with 128K) and an old ugly and very dusty CoCo3 (for
> NTSC/240V
> and with 512K) previously owned by a heavy smoker. What I want is a CoCo3
> that is beautiful on the inside (for PAL/240V and with 512K) as well as on
> the outside (rather like my wife, really).
>
> However, I am not ready to sacrifice the old, ugly CoCo just yet, so I
> will
> have to figure out something else. I will in any case need to keep both.
>
> Cheers,
>
> Fedor
>
> On 24/05/06, Bob Devries <devries.bob at gmail.com> wrote:
> >
> > Fedor, it depends on whether the other coco3 has already been modified
> for
> > 512K before. If it has, then yes, it is that easy. If not, you have to
> > clip
> > out some capacitors (C65 C66? IIRC). In any case, the original 4 memory
> > chips must be removed if they are still there.
> >
> > Hope it helps.
> > --
> > Regards, Bob Devries, Dalby, Queensland, Australia
> >
> > Isaiah 50:4 The sovereign Lord has given me
> > the capacity to be his spokesman,
> > so that I know how to help the weary.
> >
> > website: http://www.home.gil.com.au/~bdevasl
> > my blog: http://bdevries.invigorated.org/
> >
> > ----- Original Message -----
> > From: "Fedor Steeman" <petrander at gmail.com>
> > To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
> > Sent: Thursday, May 25, 2006 1:12 AM
> > Subject: [Coco] Transplanting 512K RAM expansion?
> >
> >
> > Hi,
> >
> > I want to transplant a 512K RAM expansion from one CoCo3 to another, but
> > not
> > being a hardware buff, I am a bit uncertain on how to proceed.
> >
> > The 512K RAM expansion seems to sit on top over the location of the
> > original
> > 128K RAM-blocks, so it seems an easy job of taking it out and putting it
> > in
> > the other CoCo over the 128K RAM-blocks. Is it really that simple? Or
> are
> > there other measures I need to take?
> >
> > Cheers,
> >
> > Fedor
> >
> > --
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> > Coco at maltedmedia.com
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> >
> >
> > --
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> >
>
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