@Mr.Fresh
Ahhh ok I just opened her up and i see the motherboard is rev 5 and there is a card thing under the keyboard to the right of the 512k ram thats on the motherboard...it says ICD and it is full of ram chips. It also has a "swiss made lithium battery".
Sounds like an ICD AdRAM500
http://amiga-hardware.com/ramex.htmlShould get you at least close to the hardware you're looking at.
I don't see which roms this machine has though. Hmmm a very interesting A500 I just got. I appricate your help with it.
Load up Workbench and check out the "About" menu item. It should give you a Kickstart version which someone here will interpret for you.