Thanks for the link. Interesting.
I don't need an accelerator board with video output. A simple Vampire with memory and
FPU and eventually SD-Card would be perfect...
Okay, regarding the number of A4000, indeed, it's really less than the A500. But, I'm not okay when I read into this link that generally, today, the A4000 are loaded with powerful accelerator board, graphic card, network, etc...
I have one A4000 with an A3640. One motherboard with an A3630 and an another motherboard which crying for an accelerator board. I'm sure that a lot of A4000's owners are in the same situation as mine and would be interested for a modern and powerful board.