- Behave well when NOCALIBRATE mode is enabled after some instruction
execution already happened.
- Properly detect the reliable calibrated clock or use the internal one.
- Add common system includes used in may places which are allowed
and thus added directly in sim_defs.h.
- Separate completely private system data structures and system APIs
for use only by SCP library routines into sim_scp_private.h.
Some potential packaging platforms do not want to package/distribute
simh simulators which have build-in binary code (ROM images or other
boot code) which may have unknown copyright status. Historically Linux
distributed prebuild simulators but left it to a simulator user to reach out
on the web to pick up these needed pieces to actually use the simulator(s).
This addition allows the default simulator builds to include the needed
binary components built into the simulator(s). In addition, it also
allows simlators to be built with DONT_USE_INTERNAL_ROM defined and thus
not to contain the material with potentially questionalble providence,
but to transparently reach out to the web to fetch the needed component(s)
when they are needed without any effort on the part of the simulator user.
Historically this functionality was reimplemented within each
DEVICE simulator often with slightly different implementations
and inconsistencies. Solving this globally within SCP required
changes in many places, but should henceforth be reasonably
managed.
As discussed in #1034
The new REG_DEPOSIT register flag bit indicates that updates to a
REGister with this flag specified will invoke the sim_vm_reg_update
routine after the data has been updated.
The paradigm of using a "weak" linker reference to find what was
previously the vm_init_routine() doesn't work reliably on all compile
environments supported by the simulators. This has been reported
in #794 and it came up again in #862. This change assures that
it will not come up again AND it reliably solves the problem with
Visual Studio compilers (and linker) that randomly chooses whether
to have the desired effect or not.
Of the 82 simulators which are currently part of simh, only these
three used the sim_vm_init() interface, so removing it had relatively
minor impact.
- Previously invoking a simulator with -T was the only way to invoke the
library tests for ALL devices. That still works now with the additional
flexibility to invoke a specific device's test from the sim> prompt.
- Adding TESTLIB help text encountered a maximum constant string length
limit in the C compiler. Reworked to allow multiple strings which are then
concatenated on the first HELP command invocation.
This affects the output of some SCP commands (including help). The
results are cosmetic, but allows the simulator to provide correct descriptive
information.
