24 May
2016
24 May
'16
9:53 a.m.
I wrote:
Swift Griggs wrote:
By the way, that's why most front panel implementations have
a "light check" function.
Bill S.
Machine Language Using a Program Listing Using
Toggle Switches".
That's pretty hard core. I'm surprised they didn't at least use
component displays with LEDs to show the values rather than
reading it straight off some blinkenlights.
It's much easier to tell if you have a stuck bit
(data or address) with simple LEDs. This was (and is)
a real possibility in old machines. Trying to watch
for patterns of HEX or OCT digits to provide the same
info would be really tough.