IIgs self-test results

[travis@cluracan.org (Ward C. Travis)]

I've run a IIgs through a self-test by powering it own with
Ctrl+Option+Apple. The IIgs is a ROM 01 system with 128K on-board and (for
the sake of testing) no expansion memory or cards of any kind - oh, but
there IS a 3.5 Floppy on the floppy port.  At first, it displays

         01000000

which, for lack of any other coincidences, I am taking to be the ROM
version followed by unknown, zeroed, data.

The system then cycles through a long memory test and terminates, sadly,
with this display beginning in the upper-left corner of the
40-column-screen:

   06010000
     06010000
       06010000

.. and in the bottom line of the screen:

   System bad: 06010000

And, of course, the speaker emits a piercing bell that must last two or
three seconds.

So, does anyone know how to read the final code? Is it pointing me at a
bad port? Bad DRAM on the motherboard? (I recall the original Apple ][
memory diagnostic that named exactly which chip had failed..) I'm very
interested in repairing it, if the failure code leads me to a point of
failure.

Again, thanks for the information.

-- 
Ward C. Travis -- @Cluracan.ORG -- Just collecting everything.