Thursday, May 31, 2007

One step forward.. two steps back

Got custom 07xx figured out and was moving onto another when my board started flaking out. :-( Looks like I'll have to go over it and see if I can get it working again. Cloning this system without a 'golden board' is not impossible, but reverse engineering customs and especially comparing simulation to real hardware is going to be tricky.

Tuesday, May 1, 2007

Z8002 trace adapter

I was trying to debug the 4F/3F custom I/O and was quickly convinced that there's just not enough room to get grabbers on all the pins as well as some of the Z8002 signals I want to look at (help sme get a good overall understanding as to what the system is doing).
So I quickly whipped up a small PCB that will piggyback on the cpu socket and allow me to plug the pod connectors right on to it. Saves a ton of space and dozens of grabbers to boot.