The service of Vesalia is very good.
I also bought a ACA620EC board for my A600.
The First time you boot the Amiga 600 with this board you have 5 MB fastram
When you use the tool ACATune 1.7 with the command acatune -maxmem, you get the rest of the memory. You than have a total of 12 MB of RAM. 1 MB is reserved as Mapping Kickstart ROM.
Actually the card has 16 MB but you can use only 12+1 MB.
