Re: Kernel Debugging Hardware
Alan Cox (alan@lxorguk.ukuu.org.uk)
Tue, 27 May 1997 21:43:03 +0100 (BST)
> -> 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.
>
> Yes, but the PC/XT or 286 would have to be equiped with a bidirectional
> parallel port, unless you want to use a 4 bit protocol over the control lines
> (like what laplink used in the old days) with a special cable.
On the contrary - a log is one way
> Another thought: if you do use an old PC, why not connect it's serial port to
> a serial port on the Linux machine and use the serial console driver. The PC
It requires more work is the quick answer. The 68K folks use serial bootup
strings to debug their bootstrap.
>