Date   : Sun, 28 Oct 2007 22:11:32 +0100
From   : anders.carlsson@... (Anders Carlsson)
Subject: Master boot-up help

Alex Taylor wrote:

> I replaced the motherboard with a spare, because I
> needed the extra PCI slot it had.

I suppose the two motherboards were not the exact same model, or was
a third PC involved regarding the extra PCI slot? The FDC may differ
between two similar but not identical motherboards.

Back to my question, if the drive does not respond on a command from
the BBC, could that be a damaged 6522 chip inside the computer or
something similar? As I wrote, the drive seems to get powered. Since
I had to replace the power supply, I don't know what happened to this
particular BBC Master before. Maybe it once suffered a power spike
that took the PSU and perhaps some chip with it? I do have spare 6522's
to test with if the VIA is typically socketed and you think that might
be a source of fault.

Regards

-- 
Anders Carlsson