A500 hardware upgrade

[Noster]

Hi,

here is the information you need:

ftp://ftp.uni-paderborn.de///ftp/aminet/pub/hard/hack/500hacks.txt

Noster

[Noster]

Hi

> have I to sold a yellow composant on each ram chip ?

You mean, if you have to solder a capacitor beneth each ram chip?

I've done it (I've taken the capacitors from the same VGA-card, I've taken the rams from), and it works great (and use sockets for you rams, this way you are safe not to destroy them by heat).

Noster

[Noster]

Hi

> But I cannot plug my 512 expansion card, It don't detect the memory added ..

The added memory on the motherboard and the 512 kb expansion use the same address space, so if you insert the expansion the new memory on the motherboard and the memory on the expansion are accessed both whenever an address in the higher 512 KB chip-ram is addressed. I've heard that there is a hack to enable the 512 kb expansion in conjunction with a 2MB agnus so you will get 1,5 MB chip-ram, but I've never found a description of this hack :-(

I have inserted a defect memory-expansion in the trapdoor-slot -- I've removed the dead ram-chips from this card -- so I still have a battery-backuped clock.

Noster