When you say your A1000 has built in Kickstart ROM, are you saying when you start the A1000 you just need to put in a WB disk or a game, and that you don't need to put in the initial kickstart disk? If so, I understand what you are saying but I'm of no help.
For A1000 upgrades, I've done just about all of them. But for you, I think the Spirit InBoard IN1000 that adds 1.5MB internally is what you should be looking for.
