This avoids a potential invalid pointer dereference when formatting
the return value from sim_instr() if it is < SCPE_BASE but greater
than the previously defined static array size.sizeof
Update simh.doc to reflect this generic change.
It turns out that the two reversed opcodes Maurice identified were not the
only problems in opcode 12 (shifts). All of the INS/EXT pairs at function
codes .57 and above were reversed. In addition, the mnemonics in the
opcode table in alpha_sys.c are wrong as well as reversed.
These changes facilitate more robust parameter type checking and helps
to identify unexpected coding errors.
Most simulators can now also be compiled with a C++ compiler without
warnings.
Additionally, these changes have also been configured to facilitate easier
backporting of simulator and device simulation modules to run under the
simh v3.9+ SCP framework.
