Originally Posted by Calabazam
As such, the ACA500 is perfectly fine since there is hope to use any 1200 boards even if they are not officialy supported (from the mere MTEC 1230 to the BPPC). Don't try to discourage Jens.
However, it would be better to keep compatiblity with the side slot expansion. There are some classic cool expansions like the A570 CDROM still interesting to use.
You can use the A570 with your other, unexpanded, A500. I'm sure you have more than one A500.