So, I would like to share the process with all AA users.
Starting, first ideas.
First problem: the processor dissipating fins are too long and make contact in the keyboard pcb.
To solve that, I cut a small piece of the cover
To solve this I cut a piece of the cover because the beveled edge caused the motherboard is nearly 1cm high (0.25 ")
Also bent the fins
As seen in the picture the fins no longer touch the circuit.
Holes for the I/O
The keyboard. I choice this HP
I followed carefully all the tracks and got the schematic
And what followed was a bit more complicated: I cut the Atari keyboard tracks and rewire everything to match to the HP that is PS2
Then I got a pc power supply and 2.5 SATA hard drive, and a DVD!
Everything is fine, although a little tight.
I forgot, to fit the power supply was a bit tricky, as did several custom modifications:
Cut and re-solder all the cables was a nightmare (hours of hours), but not enough to give the precise form to the shield. But the order been worth every tear.
Fixing keyboard wirenigthmare.
I/O plate, not new but works
Power SW, power led and HDD led.
And finally, works.
Running Visual Pinmame:
Running APE, to transfeer games to an 800XL.
Windows XP, SP3
Im very happy with it. Specs: Intel Mini ITX mother board, Athom CPU dual core 1.8x 1.8 mhz, 4GB RAM, 1TB 2.5"HDD, notebook DVD rom+ide-sata adaptor.
I have not enought time to install the joystick connector, but I will soon.
Now I can still remember every day the atari times, with the performance of a modern PC. And of course with the atari emulator loaded!
I hope you like what I did.
Edited by ZZTOP SOFT, Sun May 6, 2012 5:51 PM.