"What I find also interesting in this blog entry is that the "MicroA1-C Mark 2" (I guess that's the one with PPC750GX, right?) is called a "limited developer board" when in fact it was as much sold as a regular product by Eyetech as the previous one with the PPC750FX."
You are confusing the Mark 2 with the Mark 3. The Mark 3 was the Micro model (with both FX/GX) that was distributed by the Eyetech dealer network. Some developers had Mark 2.(very faulty)
