Sun 4/330 with faulty serial interface...

[John Honniball]

Jules Richardson wrote:
> We've got a Sun 4/330 which has bit 6 stuck high in every character
> output on the console. I don't suppose anyone has schematics for these
> boards or know how the serial hardware works, do they?

There's a Zilog serial chip, quite close to the serial connector.
If it's just bit 6 that's faulty, it sounds like a fault in that
chip (in the parallel section).  I think it's a Z8530.

-- 
John Honniball
coredump at gifford.co.uk