lkml.org 
[lkml]   [1997]   [May]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: Kernel Debugging Hardware
Date
> A parallel port would be easier than a serial one because all you would need
> is a counter and a bit of TTL logic. The parallel port has its own 5 volt
> supply pin, it has several signal pins which can be (ab)used for read and

All you need is an old PC/XT or 286. You raise a chosen output, write the data
byte and wait for an ACK, then repeat waiting for loss of ACK.

Alan


\
 
 \ /
  Last update: 2005-03-22 13:39    [from the cache]
©2003-2011 Jasper Spaans