Re: TED based motherboard

From: Anders Carlsson (
Date: 2007-04-04 20:16:42

Earlier today, I wrote:

> If it helps, I might try to read them a few times more, perhaps
> at a lower speed and confirm that I really get consistent output.

No matter speed or how many times I read the chip, the results are
exactly as I already posted, so no signs of reader inconsistency.

Does anyone think that getting some fresh EPROMs and burn another
set of known-good ROMs (i.e. production Plus/4 or 264, if those
exist) will help me in any way? Perhaps correct the 27128 dump
from stuck bits and burn it. Since the motherboard in many ways
differs from the final product and at least one chip would still
be missing, I would not expect much from a such experiment.

I also connected the board to my 1084, using both composite and
separate video cables, assuming that the video connector is C64
compatible just like latter C16 and Plus/4 are. It display an
almost black image that is out of sync, which I take as another
sign of the NTSC-ness.

Anders Carlsson

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