Hi! I made cable as described in this link and then used RS-232<->RS-232 
console cable with it and it actually seems to work when I connect it to 
the "printer" port, but unfortunately I don't get prompt.

What I get is this:
KN01 V7.02

7..6..5..4..3..2..
??
And that's all, it doesn't take any input, just prints ??, then refreshes 
screen and loops it this way...

Any idea what am I dealing with?

Thanks for your help!
Boris


On Mon, 13 Sep 2004, Benson Chow wrote:

> Hi,
>
> Thanks for finding my pages useful.  I'd like to mention that though the 
> data's there I haven't actually verified them all on my machine and I've been 
> updating the page as I find out more about my machine and its OS (and I 
> finally have my pmax again!).  I've still yet to find one of those mmj 
> connectors and just about *this* close ripping out the mmj connectors and 
> putting in regular 6p6 rj11s.  (Anyone in the US know a place that I can get 
> MMJ connectors on cable ends cheap?  Gosh, I don't even want to know how much 
> the crimper costs!)
>
> Anyway, I believe you should be hooking up the serial console to the printer 
> port, and that's why you were getting some garbage, it was trying to do 
> something with it.  Maybe the serial settings are off (9600bps or whatever 
> has been set in the nvram)?  Do you have both RX- and TX- hooked up to 
> GND/Common?
>
> There's a schematic here that looks like it's pretty close (and ties off more 
> signals so that you won't have to worry about handshake problems.)
>
> http://www.lammertbies.nl/comm/cable/RS-232.html#mmjs
>
> Good luck and let me know when you get it working!
>