best program/rom to check bbc b and master functionality

[arnoldemu]

Hi,
What is the best program or programs which can be run to test bbc b and master functionality?

I'm after an all in one program that will give me confidence that most things are working which I can't easily test direct from typing commands into basic. e.g. sideways ram on an expansion board.

thank you.
(I am tempted to try 6502 again and write some and it'd would be my first assembly program on the beeb).

[tricky]

I don't know if any memory test programs for the beeb but there are some for finding swram around, I've posted one a few times but aren't near my pc.

If it doesn't boot, I made a short of test room that exercises a few bits but doesn't report. It sounds like the machine works though, so may be you could load a sideways ram gam from "tape" (pc or phone).