> On Jun 15, 2015, at 11:06 , Mattis Lind <mattisl...@gmail.com> wrote: > > Well. I am probably working on to much simultaneously.
I am very guilty of that, too! :) > Then I compiled your fork of tu58em on github. And it worked perfect. I > didn't need to use the special vax mode that you have implemented though. > Maýbe it is required only by 11/730? You could probably use Don's original tu58em, then. The 730 appears to have one 20ms timeout in a critical part of the drive initialization routine (which is entered repeatedly in normal operation, not just at power-up), and stock tu58em has a delay in that spot that is problematic. Maybe the 750 console code either lacks the timeout check or has a longer timeout period? > The bad thing with the 11/750 is that is has so many socketed TTL gate > array chips. Sockets are bad. And gate arrays are bad. In that sense I > think the 11/730 is better since it is AFAIK based on mostly standard off > the shelf chips. Mostly, if I'm not mistaken (I haven't gotten too deeply involved with the PCBs yet). There are a number of PROMs. -- Mark J. Blair, NF6X <n...@nf6x.net> http://www.nf6x.net/
