Upgrading Amiga 500 Ram

[skforty]

Hey all,
 
Currently i have 4MB fitted to my GVP expansion and a 512 trapdoor, with 512 internal. I am running into "need ____ ammount of CHIPRAM to run" certain games in WHDLOAD. My question is, how exactly can i upgrade the chip ram? Do i need to change my agnus? If i ordered this, would it be counting towards my Chipram? http://cgi.ebay.com/BaseBoard-4MB-RAM-Expansion-for-Commodore-Amiga-500_W0QQitemZ400064053127QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item5d25acff87&_trksid=p3286.c0.m14
 
 
So one note, i just put a 8372A for my pal/ntsc switch.  It looks like this chip is actually 1MB, but its not showing up as 1MB in workbench.
 
Thanks for all the help!

[skforty]

So i have a revision 5 a500, and just did the hack.  Where i cut the trace between middle and bottom of j2 and then bridge middle and upper...then lift pin 32 on gary...It took 512 off of my fast ram, but my chip ram is still 512...any suggestions?

[skforty]

That guide says, "cut the trace, or lift the gary pin".  Either way its just making sure exram is connected to ground.

[skforty]

Thanks for the explanation, however, my graphic/chip ram is staying the same...when i use avail or perf tool it shows me as having 4MB fast ram and .5 MB of chipram...So it seems as its not working.

[skforty]

So im not sure what changed...I started getting green screen on boot...So then i desoldered the upper jumpers, and reclosed the bottom 2. Everything was happy again. Then i desoldered all the jumpers clean. And covered both middle and top jumpers completely....its working now. I mustve still had a connection to bottom or something?...who knows...anyways its working now. Thanks for the help!