IIGS Memory Usage

[Rich Hare <rhare@mich.com>]

I've searched the FAQ's and can't seem to find this, so I hope it's OK
to ask it in the Newsgroup.

If you turn on an Apple IIGS, and don't boot GSOS or ProDos, there
appears to be 84K of available memory marked "in use".  You can see this
if you go to the text control panel under RAM DISK.  Subtract the 84K
from however much you have on board (256K for a naked ROM 01, on up)
and  you will have the available memory (except for a mysterious 1K
which drops out, somehow).

1) Is what I am observing correct?  Am I missing something here?
2) What is the 84K used for?  Is it Applesoft pulled out of ROM and
stuck in RAM, or something?  If (whatever it is) is already in ROM, why
is it stuck in RAM on startup?

A friend of mine was asking; he felt his motherboard might be bad
because he couldn't get the basic 256K showing as available memory on
start-up.

     () ()
Rich ('-')