update on compiling sall calcs with gcc for SCD6000

It's been a while since I last worked on this, and today I made my first (unsuccessful) attempt to load a gcc compiled elf onto a SCD6000. In the previous post, I outlined how a sall file can be turned into an elf outside of the RTU Station environment.  The progress made in this post is the small step of using the gcc toolchain from within the RTU Station environment.  This is required, because any points used by the calc need to be parsed and included for the rest of the RTU configuration (these points are stored in the defs.h file, which gets renamed to <calcname>.h).  The details are in on github.

Unfortunately, the first attempt to load an actual file didn't work (the calc shows up in the error state in the RTU).  This is not at all unexpected, and now begins the tedious process of trying to understand why.  This may prove to be quite a challenge, given that we can't really observe the internals of the RTU, but I'll keep chipping away at it.


| July 27th, 2018 | Posted in Foxboro, Reversing |

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