More 11/45

Ethan Dicks ethan.dicks at gmail.com
Fri Mar 31 03:56:48 CST 2006


On 3/31/06, Pete Turnbull <pete at dunnington.plus.com> wrote:
> On Mar 31 2006, 18:16, Ethan Dicks wrote:
> > ... so if you really are halting at 000004, sounds like a bus error.
> > Perhaps the code you toggled in can't find an I/O register it's
> > expecting.
>
> No, if you have set up the standard trap catcher, and you halt at 4, it
> loaded the vector from 0, executed the HALT instruction at 2, and the
> PC contains 4 by the time it stops or returns to ODT.

Ah... my mistake... it's been about 20 years since I had to do any
interrupt coding on the -11.

-ethan




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