31 Mar
2006
31 Mar
'06
1:56 a.m.
On 3/31/06, Pete Turnbull <pete at dunnington.plus.com> wrote:
On Mar 31 2006, 18:16, Ethan Dicks wrote:
Ah... my mistake... it's been about 20 years since I had to do any
interrupt coding on the -11.
-ethan
... 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.