Re: No-Slot-Clock technical question

[sicklittlemonkey <nick.westgate@gmail.com>]

On Aug 29, 11:24 am, "Michael J. Mahon" <mjma...@aol.com> wrote:
> On 8/28/2010 3:46 AM, sicklittlemonkey wrote:
>
> > For someone who has one, or maybe knows off-hand ...
>
> > When putting data on D0 does the NSC allow the attached ROM to output
> > on D7-D1, or does it disable the ROM and leave these lines low?
>
> I think it deselects the ROM, leaving D1-D7 tristated--it doesn't even
> connect to any data pins except D0.

Hi Michael - thanks for your reply.

So would D1-D7 return floating bus data from the video scanner?

If you or someone else has a NSC and a few spare minutes, I have just
hacked up a test app on a DSK which should answer the question.

Cheers,
Nick.