Upgrade paths :
Do you have the trapdoor internal memory expansion? Otherwise, you are limited to 512 K of RAM, which will not permit a lot of stuff.
There's a side expansion slot (left side, opposite the floppy drive) but it can be a bit hit and miss finding stuff to put here.
You can upgrade ROM's and I believe you can swap out chips for ECS if you want to.
For a retro gaming machine, 1.3 ROM's and 1 meg of RAM is probably all you need.
