PDP-11/10 repair started

Noel Chiappa 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 cctalk mailing list