11 Oct
2022
11 Oct
'22
4:31 p.m.
What sources did you use? I had to fix some things to build and run
under RSX. My fixed version can be found on MIM.
And why are you trying without FPP? Also, I have created an RPM package
for APL, which you can just install if you have that thing running. But
that requires FPP as well.
Johnny
On 2022-10-11 15:54, Dave McGuire wrote:
On 10/11/22 09:11, Paul Koning wrote:
--
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: bqt(a)softjar.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
Z errors may well be acceptable. The thing to do
is examine the code
to see what it wants to happen, then check the model differences
appendix B of the PDP11 architecture handbook to see if your target
machine does what is wanted. The primary source of Z errors I
remember is the use of the same register in an autoinc/autodec mode
and as a direct source operand; in some machines, both operand
addresses are determined first and then the source register is
fetched; in others, the source is handled, then the destination. See
page B-2 of the architecture handbook.
Of course another option would be to replace the offending instruction
by 2-instruction sequences that achieve the intended result without Z
errors.
Yes, it's the autincrement/decrement when the source/destination
operands are the same; that's covered in the earlier docs. They removed
most of that description in the later manuals, which was annoying.
I am under a looming deadline to get this running, and it's already
quite a busy few days here with hurricane recovery on top of regular
work, so I really don't have time to hack on it. What I'm trying to
build is a supported configuration according to the APL-11
documentation. It just doesn't seem to work, so I just figured I'd ask
here if anyone had done it.
Late last night I started to wonder if the Z errors were actually
supposed to have been warnings, as it did generate object files. So I
moved forward to the next step in the build, and it generated a task
file...which doesn't run. It exits immediately, no messages of any
kind. Frustrating.
-Dave