- tidy up of command line parsing
o regression testing
- added regression package
- implemented simple database to facilitate regression tests
- uses DigestTV
- implemented a headless television that can save the last image to a file
o DigestTV
- implemented a headless television that updates a screen digest
every frame
o gopher2600
- added "regress" mode. uses digesttv and will be used as the basis
of a complete regression testing mode
- implemented BRK and RTI instructions - not fully tested
- tidied up when NoSideEffect is checked
o debugger
- fixed breakAndTrapCallback
- fixed instruction result validity check crash caused when
instruction step resulted a runtime error
o cartridge
- added support for half-size cartridges
- tidied up error handling
o various commentary cleanups/clarifications
o move test files to test/ directory
- added 0x80 - immediate 3-byte nop
o vcs
- reset operation now resets TIA and RIOT in addition to CPU
o cpu
- reset attempt mid-instruction now returns suitable error
instead of panicking
o debugger
- fixed breakpoint/trap check when it occurs mid-instruction
- broken in 6045b9a9b65d623800b8e386e06fe0fdfb71998f
- fixed PEEK command
- fixed SYMBOL command
- SYMBOL command now takes optional ALL argument - prints every
mirror address of the resolved symbol
- tidy up how state requests are made
- added info requests
- implemented MOUSE info request
o debugger
- implemented 'LAST DEFN'. prints the definition of the last
instruction executed
- STEP now takes optional CPU or VIDEO keywords
- removed critical sections and replaced with channel
communication
- better lexing/parsing of command input
- break/trap on instruction effect (read, write, etc.)
(we had to implement a more flexible way of satisfying the
target interface for this. it works but it's a bit ugly)
