Akiko wrote:
Wasn't this rare revision supposed to have 2 clock ports instead of none!?!
Nope. Some boards had the full P9B header soldered in place though (and IIRC some had the leftmost pins soldered in by mistake!), but it isn't an extra clockport.
The original plan for the A1200 was to ship it with 1MB of memory, and the P9A and P9B headers were there to plug in an extra 1MB and clock.