PDP-11/45 RSTS/E boot problem
Noel Chiappa
jnc at mercury.lcs.mit.edu
Mon Feb 11 12:31:50 CST 2019
> From: Jerry Weiss
> Though not a disk controller, the DEC DR11-B/DA11-B would not cross 64K
> boundaries.
Interesting! What's odd is that the DR11-B uses the Bus Interface card (M7219)
from the RC11 controller, and that _can_ cross moby boundaries, so clearly it
has the right overflow output; someone just decided not to implement it - the
DR11-B sets ERROR instead on an address overflow. Wierd.
Anyway, it will be interesting to see if RSTS operates correctly once this
problem is fixed...
Noel
More information about the cctalk
mailing list