This adds a new system definition that, when selected, causes some
pre-processing to be done on VICE CRT (cartridge) files. These have
multiple chunks representing potentially overlapping ROM regions.
Also, pulled RawData.cs from CiderPress2, as it has some newer stuff
that we want. (It would've been handy for the OMF code.)
Also, renamed SystemDefs.cs to SystemDef.cs to match the class name.
(issue #183)
Early data sheets listed BRK as one byte, but RTI after a BRK skips
the following byte, effectively making BRK a 2-byte instruction.
Sometimes, such as when diassembling Apple /// SOS code, it's handy
to treat it that way explicitly.
This change makes two-byte BRKs optional, controlled by a checkbox
in the project settings. In the system definitions it defaults to
true for Apple ///, false for all others.
ACME doesn't allow BRK to have an arg, and cc65 only allows it for
65816 code (?), so it's emitted as a hex blob for those assemblers.
Anyone wishing to target those assemblers should stick to 1-byte mode.
Extension scripts have to switch between formatting one byte of
inline data and formatting an instruction with a one-byte operand.
A helper function has been added to the plugin Util class.
To get some regression test coverage, 2022-extension-scripts has
been configured to use two-byte BRK.
Also, added/corrected some SOS constants.
See also issue #44.
