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View Full Version : Making a Sun console cable (mini-DIN8)



cl3mens
August 6th, 2008, 01:04 PM
Hi *.*

A few weeks ago I got my hands on a Sun Sparcstation IPX, but no console cable. It has the small serial ports with a mini-DIN8F connector, and today I bought the parts for the cable.

Pinouts/schematics seems a little bit hard to find though...

I've found the pinout for the serial port on http://www.sunshack.org/data/sh/2.1/infoserver.central/data/syshbk/General/std_if_conn.html (almost at the bottom), but the pin names doesn't add up to the ones I have for the DB9 end of the cable. :(

DB9 pinout I've used for another cable:

Pin 1: GND
Pin 2: RXD
Pin 3: TXD
Pin 4: DTR
Pin 5: SIG GND
Pin 6: DSR
Pin 7: RTS
Pin 8: CTS
Pin 9: RI (not used)

Here is how I'm thinking right now:



DB9 MINI-DIN8
GND -> GND
TXD -> RXD
RXD -> TXD
RTS -> CTS
CTS -> RTS
DSR -> DTR


So, where to put SIG GND and DTR from the DB9?

I belive this is called a full handshake cable, maybe it's more than I need? I'd just like to be able to use it for a console, no file transfers are needed. Echoing would be good though :)

paul
August 6th, 2008, 03:59 PM
Would pin 5 (sig gnd) not be the same on both ends? GND may refer to the shield on the cable so you could pass this to the DB9 shell rather than pin 5, or leave it off entirely.

I'm sure you can get it working with just a 3-wire serial link but if you run into a brick wall I have the original SUN cable (for an IPC) with a DB25 that I could ring-out.

I don't know if the IPX is like the IPC, but on my IPC (http://paulaxford.com/computer_collection/SUN_IPC.htm) disconnecting the serial console during operation will cause the machine to revert back to a BIOS screen!

ahm
August 6th, 2008, 05:24 PM
Perhaps these will help:

http://obsolyte.com/sunFAQ/serial/

http://www.sunhelp.org/unix-serial-port-resources/serial-pinouts/

cl3mens
August 7th, 2008, 12:41 PM
Thanks for the tips guys! I think I'll start out with the 3 wire-cable, easier to add more wires than removing them without making a mess on the connector.