5 Feb
2019
5 Feb
'19
7:21 a.m.
Den tis 5 feb. 2019 kl 00:23 skrev Fritz Mueller via cctalk <
cctalk at classiccmp.org>:
Would it be any difference if you run the machine at full speed or lower
speed or even single step past this instruction? With the KM11 installed
you could even single step the 5 minor states in each micro instruction.
Would it be possible to insert a breakpoint or halt and run the program,
insert original instruction and single step?
The TIG module has a separate non crystal controlled oscillator which one
could tune for marginal checking.
Would it be possible to isolate the test case outside the UNIX environment?
/Mattis
On Feb 4, 2019, at 2:28 AM, Noel Chiappa via
cctalk <
cctalk at classiccmp.org> wrote:
I'm pretty sure the command only gets a few instructions in before it
blows
up. Here are the process' registers, and the
_entire_ contents of the
user
mode stack:
R0 177770
R1 0
R2 0
R3 0
R4 34
R5 444
SP 177760
PC 010210
060: 000000 000020 000001 177770 177774 177777 071554 000000
Okay, I've had a bit of time in front of the machine to repro this and
take a look. What I actually see is:
R0 177770
R1 0
R2 0
R3 0
R4 0
R5 34
R6 141774
PC 000254
(remember, for the last, this will have been after taking a trap to 250,
where I have the usual "BR .+2; HALT" catcher installed)
Also, memory at 060 (PA:164060) is all zeros as far as the eye can see...
I have a bit of water on the basement floor right now after the recent
rains here, which is complicating setup of the LA. There's a big puddle
where I normally place it...