>>> Of course all you can do at that prompt is load the microcode from >>> the TU58, so that is what I am trying to get working. And getting >>> nowhere! >> And you don't want to use a TU58 emulator? > No, I don't want to use a TU58 emulator for the same reason that I am > restoring this VAX and not running a VAX emulator.
I can certainly understand that. But a TU58 emulator could be a useful diagnostic tool. Personally, I would try to get it working from the emulator first; that would give me a reasonable level of confidence that, when chasing a bug in the TU58, I'm actually chasing a bug in the TU58 and not a bug in the CPU. Similarly, it could be a useful diagnostic tool to connect the real TU58 hardware to a known-working (presumably slightly more modern) machine to see if it's willing to work that way. /~\ The ASCII Mouse \ / Ribbon Campaign X Against HTML mo...@rodents-montreal.org / \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B