I need more RAM in my A500.

[motrucker]

You'll have to wait for the next version of the IDE68k which is an internal IDE interface and 8Mbyte RAM card which plugs into the CPU socket.

http://www.students.tut.fi/~leinone3/ide/ide68k.html

Other than that, check ebay for a GVP HD8+ they usually sell for about £50

It's an A500!  The AdRAM 540 is great - but he'll never find one.

[motrucker]

The AdRAM 540 will take you way beyond 1Mb. The 540 and 560 together may get to 4Mb. The Baseboard is another bigger than 1Mb expansion for the A500. Just because they don't use SIMMs doesn't mean they are limited to 1Mb!!
An ideal setup would be a mega midget racer with a 4Mb SIMM on it. There are a couple of accelerators besides this one that allow more RAM.
Here are the specs on the AdRAM cards: http://www.amiga-hardware.com/showhardware.cgi?HARDID=1015
Looks like 3.8Mb is the most you can get from this trapdoor expansion.

[motrucker]

And??

That makes it rather hard to use an GVP HD8+ unless he gets a slingshot. That was my point. It's not impossible, but most A500 users aren't going to want to fool with it.

[motrucker]

Here is 4Mb expansion board being sold by none other than our very own redrumloa. Very fair price IMHO. Here's the eBay link;

http://cgi.ebay.com/BaseBoard-4MB-RAM-Expansion-for-Commodore-Amiga-500_W0QQitemZ400064053127QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item5d25acff87&_trksid=p3286.c0.m14

I hope this helps some one.

[motrucker]

Actually, AdRAM 540/560 combination will take you to as much as 6MB of RAM in a properly configured A500.  I've got that and a little more in my A500 since I also have a "sidecar".  See here - http://mikerye.homeip.net/about_my_computers.html

I was sure it would get to at least 4Mb. The BaseBoard will get to at least 4Mb too.
I used to have an A500 years ago with the AdRAM 540, with 2.04 ROMs (they were new at the time!) and a GVP A500+ Series II hard drive & RAM. It was a pretty good system - very stable.