A few more questions....

[giZmo350]

Thanks for the info! Sheesh, I should have done that to check the ROM as I read that too. And BTW, it's version 2.04! So, that got me to wondering if it had a kickstart switcher in it as I thought they all came with version 1.3.  So, I cracked open the case and found out that it has NO switcher but did find out that the mother board is Rev 6a and a sticker on the data square says it's an A500 N. What does that mean? And why on earth does it say on the data square B52/Rock Lobster? The Agnus is designated FAT AGNUS. The unit only has 512 meg of chip RAM on the mother board. Can anyone tell me where this unit came from? Thanks in advance!  

[SamuraiCrow]

The Amiga 500 series had a RAM expansion card that would plug into the trapdoor slot on the bottom of the computer.  This would add 512k of fake fast RAM that was as slow as chip RAM.  With some modification the FAT AGNUS could address 1 meg of chip RAM but to get it to work you would need to replace the Denise chip with a Super Denise.  Kickstart 2.04 will recognize the added chip RAM.  Kickstart 1.3 or older will not.

If you're not familiar with CHIP memory as opposed to FAST memory:  CHIP memory is a combination of VIDEO and AUDIO memory that gets used as main memory if you run out of FAST memory.  Fast memory is only accessible by the main processor so the processor never has to wait for its turn to access memory hence the name FAST memory.