Re: Uther issues... very few signs of life...

[Eric Rucker <bhtooefr@gmail.com>]

On Feb 15, 1:41 pm, aiiad...@gmail.com wrote:
> On Feb 15, 8:37 am, "Simon D. Williams" <em...@ld8.org> wrote:
>
>
>
> > Another "obvious" possibility is that the card can be installed
> > backwards IIRC.
>
> yeah, that is correct... but I don't think you'd end up with any
> lights on the card working...
>
> http://osites.tripod.com/peripheral.html
>
> you would have +5 going to +12 on the card...  +12 would be
> connected to +5...
>
> then you'd have ground on the MB going to IOSELECT on the
> card (which is active low...)
>
> -12 and -5 on the MB would be going to the address bus of
> the Uther.  I think -12
> would probably overload the chips on Uther?
>
> Rich

Trust me, I was putting the card in the right way. ;)

Anyway, after some testing with cards pulled out of an old //e that
was lying around... it's either, both Grappler+s I grabbed are bad,
and the Z80 card is either bad, has the wrong boot disk, is in the
wrong slot, or is improperly configured (or a combination of the
above,) or the GS's motherboard is bad, or all of the above.