Set sc_psim so that the openpic core can correct the off-by-one error in the number of IRQs that PSIM gives us.
Set sc_psim so that the openpic core can correct the off-by-one
error in the number of IRQs that PSIM gives us.

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase