[TUHS] PDP-11/70 SPL (was: Early non-Unix filesystems?)

Noel Chiappa jnc at mercury.lcs.mit.edu
Sun Mar 27 21:25:43 AEST 2016

    > From: Johnny Billquist

    > It would also be interesting if anyone can come up with a good reason
    > why SPL should work that way.

So that when doing:

	SPL	0

you don't lose by having the interrupt happen between the SPL and the WAIT?


More information about the TUHS mailing list