I am repairing a voodoo1 that has been treated pretty badly by somebody in the past.

The tmu had bent pins and in a bad state. After repairing all the pins and checking multiple times mojo shows 0mb tmu memory and 2mb fbi.

Games run but with artifacts and missing textures.

So either the ram on the tmu or the tmu is faulty. I took off the tmu ram and transplanted 1 chip from a donor card as a test.

Mojo still shows 0 tmu ram, I enabled logs and in the logs it shows error querying size for banks 1 - 4 on the tmu ram.

Anybody know if having only 1 chip could have this result and need all 4 to be detected? Or the tmu is the culprit?

My logic is there is no point soldering on all 4 chips if its for nothing if get 0 with 1 chip only