PDP-11/10 repair started
jnc at mercury.lcs.mit.edu
Tue Oct 6 15:05:44 CDT 2015
> From: Tony Duell
> if it behaves as you describe, it would appear that if placed at the
> remote end of the bus it could lock the bus by forcing SACK/ asserted
> (as the M9302 does) if a grant chain is open [and there's a board with
> a pull-up on the grant input just after the break], whereas if it is
> placed at the CPU end it can't.
But yeah, good point - this smarter board actually works _better_ at the
start of the bus, than at the end.
More information about the cctech