Re: Apple II+ Flakey Inverse Characters

[mwillegal <mike@willegal.net>]

That part should work in a RFI board, though it is interesting that an
EPROM would fail in a very similar way to a 2513.

Regards,
Mike Willegal

On Jan 8, 10:50 pm, wrodiger <wrodi...@gmail.com> wrote:
> On Jan 8, 4:20 pm, mwillegal <m...@willegal.net> wrote:
>
>
>
>
>
> > I think that you are on the right track.
>
> > A flakey 2513 was my first guess, but you indicated that it only
> > happened
> > in inverse mode.  This problem should not be dependant upon mode,
> > though it
> > may be more obvious in certain modes. I had a batch of NOS 2513 chips
> > where
> > about 50% of them had this issue.
>
> > Regards,
> > Mike Willegal
>
> > PS
> > the 341-0036 character rom part listed on the site you mention is not
> > a 2513 and is not compatible
> > with early Apple II motherboards.
>
> My motherboard is a revision 7 RFI board, so I am hoping it matches...
> if not, I assume I can locate the binary image and burn my own?
>
> Will