[Simh] Looking for EVKAA Listing

[Mark Pizzolato]

Hello everyone,

We've got a problem with the VAX simulators which has come up several 
times in the past and is threatening to completely break them in the future.

The original implementation of the VAX simulator code was done with 
int32 variables throughout and assumed VAX like consistent behavior on
integer overflow operations.  As it turns out, the C language explicitly 
states that behavior of signed integers when overflow occurs is undefined.
"undefined" allows the compiler to behave in arbitrary ways when this 
happens.  Currently, the default compiler on OS X (clang or LLVM) produces 
unexpected results when any optimization level is specified.  In the future
it may also produce unexpected results for unoptimized code as well 
since technically any behavior under those circumstances could happen.

I've got a reworked version of the VAX cpu simulator code which uses 
uint32 throughout and as such does not encounter any potential for 
undefined results.  The scope of these changes affect many different places 
in the simulator so some rigorous testing will be required before I'm 
comfortable merging these changes into the master branch.  Merely 
booting VMS successfully is not a sufficient test.  DEC had a tool called AXE 
which was used to verify that new VAX models were consistent with the 
range of expected behaviors for the whole complex instruction set.  It 
would be fantastic if we could get access to, or if someone with access 
could work with me to validate the changed simulator.  

Meanwhile,  the existing VAX core instruction diagnostic EVKAA has 
been helpful identifying some detailed problems with the changed 
simulator.  There is diagnostic documentation for several VAX processors
which describes how to start and run EVKAA which varies by model
due to different console media.  The diagnostic instructions specifically
describe how to handle diagnostic failures and these instructions direct
the user to consult the EVKAA Listing for details about the specific test
that may be failing.  That suggests that the Listing would be readily 
available somewhere, maybe even packaged with the diagnostics on 
systems with sufficiently large diagnostic media, or maybe on micro 
fiche???

Does anyone have access to said listing?

Additionally, I've seen EVKAA version 7.2 and 8.0.  Bob suggested that
the last version was 10.3.  If someone has later versions of EVKAA.exe
they would be appreciated (along with a Listing if it is available).

Thanks.

- Mark