Re: Extended 80 column card issue

[Jeff Shanholtz <jeffsubs@shanholtz.com>]

On May 23, 7:16 pm, demp...@actrix.gen.nz (David Empson) wrote:
> The 1 in the first position means that bit 7 (I think) of memory in the
> zero page area of auxiliary memory. If it is always reporting the same
> error, it sounds like you have a single faulty RAM chip.

Thanks. The 1 refers to chip 8 (the silkscreening on the board uses 1
based numbering - you're probably referring to it with 0 based
numbering).

That chip was bad as was chip 3. Had to borrow a couple of 4164's from
my Defender arcade game so I'll have to get a couple chips ordered!

Now the card passes self test, the diagnostic disk I mentioned runs
all tests with flying colors, and adtpro no longer hangs (now I
realize it hangs because of /ram drive).

Appreciate the help everyone! CSA2 is awesome!