[Simh] Vax doorbell implimentation

[Villy Madsen]

Is anyone actually using this, ??? <G>

I think that I will use that IO address for my attempts to build an 
emulation throttle....

or if anyone has a philosophical objection, give me a couple of IO address 
that are not defined.   I can't find a peripherals handbook anywhere (dare 
I admit to how many I've chucked in the garbage can over the years ?).

If anyone has a pdf of it - I would be exceedingly grateful..

Villy

Villy Madsen
www.members.shaw.ca/villy.madsen