Re: Apple //e Diagnostic ROM board

["Paul R. Santa-Maria" <paulrsm@ameritech.net>]

I purchased one from Quadrajet1.  The red switch is like the old
Integer/Applesoft firmware board.  In one position the board ROMs take over
the computer; in the other the motherboard ROMs are active.  I believe it
is strictly a series of software tests; I believe there is no speciaized
hardware on the card to test the Apple IIe.
-- 

Paul R. Santa-Maria
Ann Arbor, Michigan  USA
paulrsm@ameritech.net

WASIK 620 <wasik620@aol.com> wrote in article
<20000407173104.06032.00000568@ng-ch1.aol.com>...
> I came across a board from Apple that has "Apple Diagnostic ROM" stamped
on the
> board. It has a switch on the board with a red handle. also has 3 large
chip
> slots and two of the slots have Apple 077-0018 and 077-0019 chips in.The
slot
> in the middle has no chip in. It also has a lot of other smaller chips on
the
> board.
> Any idea of what this is exactly and what it was for?  The date on the
card
> under the Apple logo and name is 1982. Thanks for any information.
> Walt 
>