can someone explain the A500 rev.5 + KS 2.04 hack?

[da9000]

I've seen the KS 2.04 on the A500 rev.5 board has a wire between two pins: top left-most (pin 1?) and somewhere in the middle of the right side.

Why is this needed for the rev.5 boards (I saw it mentioned in another thread). Can you point me to any docs that explain this?

Also, on rev.6a motherboards there's a resistor going to the left-most CIA. Can you point me to any docs for this too? Do I need to do it in the rev.5 boards to "save" them from possible future CIA-deaths?

Thanks in advance

[da9000]

Thanks for the answer Amiga4k.

I guess the A17 address line is needed for addressing the larger 2.04 kickstart ?

As for rev.6a you mean that it's not needed and thus cut/remove the wire/jumper, correct?

[da9000]

Good trick JLF65!

Thanks for sharing, although I have no qualms about hacking the motherboard I don't plan to get rid of my Amigas, (till death do us apart), but also I think hacked up hardware is way cooler
I remember I got my first Amiga, an A3000, and I looked in the back and there was a hacked NTSC/PAL switch attached to the rear.  I was so happy I had gotten a tweaked box