Re: Stray ROM chip -what is it for?

["Ernest" <leucoplast@seanet.NOSPAM.com>]

"Michael J. Mahon" <mjmahon@aol.com> wrote in message
20030810214531.20867.00000426@mb-m24.aol.com">news:20030810214531.20867.00000426@mb-m24.aol.com...
> Ernest asked:
>
> >I found a stray ROM chip labeled APPLESUR Ver. 3.1. Does anyone know what
it
> >might be for?  It's a 2732 chip.
>
> Sounds like the ROM for an Applesurance diagnostic disk controller.
> This was a disk controller that performed diagnostics on the machine
> prior to booting up.
>
> Maybe the original owner swapped it out for Ver. 3.2.  ;-)

Interesting. I wonder if they were using it in a Basis Diagnostic disk
controller? I've never seen an Applesurance card but a ROM from one ended up
in a box of Basis 108 junk. There's also a Micro-SCI controller card with
some sort of utility ROM in it but I think it's broken.

E.