First of all can you tell us the exact pinout for the serial converter? Because you list the wrong section for the serial port on the Power Series. It should have been:
http://www.meadow.net/pinouts.html#sgiDB9F
I sometimes refer to it as a 4D-serial port, so for connecting a 4D-DB9 female to IBM-DB9 male serial port you need a 4D-DB9 male to IBM-DB9 female null modem cable. (for a stand alone terminal you need a 9-25 converter) I have such a cable for my Crimson and PI, and it took me a few tries to get it right.
This might explain why you do get output but no input response from the 4D-240. From "This old SGI" page:
Quote:
Buried deep within the GT graphics subsystem is a little-known interface which resides on the GM1 card. The GM1 appears to be built around a MC68020 CPU running at 16 Mhz. If you examine the card, you will notice a female DB9 connector. This connector provides an RS232C serial interface (9600,N,8,1) with more or less the same pinout as the standard SGI DB9 Serial connector. The only difference is that this serial interface doesn't support any of the hardware handshaking lines, so you can get away with simply connecting pins 2,3 and 7 via an appropriate adaptor cable (or you can use the same type of adaptor cable needed to connect an ASCII terminal to serial port 1 for debugging purposes. See the chapter on 4D Series Serial Port Pinouts for more details.)
So how about the GM> prompt? Can you enter stuff in there? Then chances are that your handshaking is correct for the GM serial port but incorrect for accessing the 240 serial port.
That output doesn't look good. I hope this improves by pulling out the GT boards and have a good look at it. Incidentally, can you make a photo of the GTX boardset? It can be anything ranging from 3 to 5 or even 6 boards. GM2 and GE4 should always be there, and they are bridged by a small board. You can have up to two RM1's and an RV1.5 or RV2.
Quote:
Also, is
http://sgistuff.g-lenerz.de/
down or is it just me? (I just get a "500 Internal Server Error" message.)
http://www.g-lenerz.de/retro-collection.html might suggest that only his php link with apache is slightly shitty. standard html pages do load fine.