[prev in list] [next in list] [prev in thread] [next in thread] 

List:       classiccmp
Subject:    Re: Teletype Troubleshooting
From:       ard () p850ug1 ! demon ! co ! uk (Tony Duell)
Date:       2005-04-30 21:43:11
Message-ID: m1DRzk3-000IxvC () p850ug1
[Download RAW message or body]

> >I'm testing in local mode and am getting incorrect characters 
> >on (almost) every keypress. The characters will change even 
> >with repeated pressings of the same key. I am pretty sure the 
> >keyboard is outputting the correct codes.
> 

> 	Never assume. One problem area we had was that the stiff spring-contact

That is a more general point. Never assume anything -- far too much time 
has been wasted assuming something is working correctly when it could be 
trivially tested!

That was the point of my idea to test the trasnmitter side separately. We 
need to know which area of the machine has problems, then narrow down on 
the faulty part.

More generally still, if something is safety-related, never assume 
anything. If you ever get me working on a machine with you, you will find 
I never trust you've turned off the power/unplugged it. I will check. If 
you feel insulted by that, I frankly don't care. And if I say I've turned 
something off, I expect you to check. I won't be insulted, I know I can 
easily make mistakes [1]

[1] Like most hackers [2], I love a good practical joke, but I don't regard 
claiming to have isolated something whan I've not done so as a joke. 
Potential death situations are not funny. 

[2] I am not claiming to be a hacker. I know I am nowhere near good enough.

-tony

[prev in list] [next in list] [prev in thread] [next in thread]