None of the other systems are powered up. This is surprising because i would have expected DSR or DTR to go way (depending on whether this is about the SGI or Cyclades side), not CTS. The Challenge S (port 27) has flow control disabled (so it works), and RTS, DSR, DTR enabled. Everything works fine, but the Cyclades thinks it has RTS, CTS, DSR, DTR available. In the shot from the Cyclades admin interface below the Indigo2 (port 37) has flow control enable. If I disable all flow control it works, but if I wanted this I could have settled for a 3-wire cable. boot messages) going from SGI -> Cyclades, but I can't input text to the SGI. Now, with flow control (hardware or software) enabled on the Cyclades side, there's text output (e.g. So I left it disconnected, but still connected the DTR from the mini-DIN8 to the DSR on the Cyclades side. Now that I made some more I find out that it doesn't work with flow control enabled with Indigo and Indy systems.Īs can be seen from the pinout tables and the SGI documentation, there's no DSR pin defined in the mini-DIN8 connector. I originally debugged this adapter with an Indigo2. There seems to be something going wrong between some SGI systems, the mini-DIN8 adapter and the Cyclades ACS48. This plugs right into one of those USB serial dongles.
I wasn't quite expecting that but it saved me the trouble of figuring whether an end was a left or a right side. Then you apply NULL crossover (or not).Īs far as the dual RJ45-F cable goes: it was undocumented (of course), but when I mapped out both halves using similar technique I found them to be identical. The combination of Cyclades pinout to ethernet color and ethernet color to adapter color mapping gives me the function of every wire color in the adapter. In fact, between two batches of DB9-F adapters I bought I found a difference, hence the v1 and v2 version. This is just an example and no guarantee that if you go out and buy some of these adapters they'll use the same color code. Next, with a cut up ethernet cable and a voltmeter we map ethernet wire colors to adapter colors:
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