17 Apr
2002
17 Apr
'02
10 p.m.
On Wed, 17 Apr 2002, Tothwolf wrote:
I've been wondering what that port on the rear of
the system is for. It
could be for nearly anything, but the only way to find out is to trace it
out down to the board level.
From what I can tell, it's a digital I or O port.
It connects to three
cards (which also connect to the 24 LEDs and toggle switches on
the front
panel) which each have a 6821 and a few transistors on them, so I'd guess
it's for output.
-- Pat