You know, my
prototype Torch Z80 disk unit has power out at
the back; I
can't remember whether the production ones
were like that or not. It
had never occurred to me that someone would want to power
the machine
from it!
There's one on eBay at the moment - Item 280020173050 - with
a picture clearly showing the rear with a DC out connector.
It appears to only be +/- 5V from the labeling, which I would
have thought insufficient to run a Beeb. So what WAS it used for??
+5v and -5v cover the logic, serial port and sound. The +12v was only used
to power drives, those drives are inside the Torch so there is no need for
it.
Dave ;)