VAX 11/750 Config and Diagnostics, anyone?

When I did this, I didn't have the DZ11 printset (I have it now, of course). I had t otrace out connections by hand. Finding hte grounds was quite easy, I then traced the remaining pins back to 1488s and 1489s to determine which were inputs nad which were outputs. It was then a 'simple' matter of sticking the card in my 11/45, writing to things like the DTR (?) control register and seeing which pins changed state, doing thwe same with the line break register (to find the TxD pins), then reading the DCCD register and seeing which pin changed each bit, and so on. The remaining pins had to be the RxD inputs (the only ones I couldn't directly test), it wasn't too hard to work out which was for each channel. It's not that nice in a BA11-K (you have to fold the cable over), it goes very nicely in a BA11-F (11/40, 11/45 box), since you can plug the cable in from the top after opening the upper fan tray. -tony