The motherboard isn't screwed in at all, there's no way this thing would fit through the trapdoor slot if it was. The entire A1200 motherboard is being bent a little bit just so this thing will fit.
Please note that I was not using -maprom, you are looking at the disabled like with a ; in front of it. The active line was the one above, which still does not work so I use ACATune without any options.
I am still experiencing weird crashes, usually preceded by graphical corruption. I don't have any other expansions in this A1200 other than the internal IDE-CF adapter and a PCMCIA card reader.