Klunky IIGS - no docs - where do I start?

[duncane@jumper.mcc.ac.uk (Duncan Entwisle)]

I've just received an old IIGS (ROM 01) to add to the ranks of old 
computers stealing space in my bedroom. I'm using an ADB keyboard from my 
SE/30 (an old keyboard - it has that power down key in the top border) 
and a composite monitor.

Firstly, the composite signal doesn't appear to sync properly (the 
monitor works on three different machines, two of them Apple //e) and I 
get a couple of overlaid images about a 1/3rd of the way down) - it was 
assembled in Ireland, presumably for the UK/Irish 50MHz market. Any quick 
fixes - would a bog standard CGA monitor fit into the RGB socket - and if 
so, what signals would it require (am I right in thinking that the RGB 
wouldn't be able to show monochrome hires displays - displaying them as 
colour?). Or is the composite problem sympotamatic (sp?) of anything else 
(the power supply does seem to emit a slightly crackly sound).

Secondly it doesn't even look at my Disk ][ controller and disks - 
complains about setup or something on booting - I've read elesewhere 
about setting a control panel - but how do I access it (bearing in mind 
that my keyboard might not have the keys marked out in the same manner as 
the original IIGS keyboard).

Finally - looking inside - there is a memory expansion slot (no card) - and 
counting the RAM chips, there are about 10 xxx64 chips - which comes out 
to about 80Kbytes by my reckoning - I thought they were meant to have 
256k as standard? Secondly - can you have only one memory card at a time 
- and is it plugged into the memory expansion slot, or one of the seven 
slots towards the rear.

Sorry about the novice questions, but I've had enough fun tracking down 
information on Apple //e, the IIGS is even more scarce in this country :)

Thanks for your time.
Duncan.