Fuse for macOS Files

Version 1.2.1 of the ZX Spectrum and related machines emulator Fuse for Mac OS X has been released.

Changes since version 1.2.0:
Emulation core improvements:
* Fix bugs when the detect loaders feature is being used (Fredrick Meunier).

Debugger improvements:
* Remove the need for "%" when accessing system variables (Philip Kendall).
* Add Z80 registers as debugger variables (Philip Kendall).
* Expose last byte written to the ULA, tstates since interrupt, primary and secondary memory control ports as debugger system variables (Philip Kendall).
* Make breakpoints on events honour lifetime (Sergio Baldoví).
* Extend breakpoints on paging events to more peripherals: Beta 128, +D, Didaktik 80, DISCiPLE, Opus Discovery and SpeccyBoot (Sergio Baldoví).
* Split +D memory sources into RAM and ROM sections (Sergio Baldoví).
* Coalesce +D and DISCiPLE RAM pages so they show as 8K pages (Sergio Baldoví).

Miscellaneous improvements:
* Add an emulator module startup manager to automatically handle dependency issues (Philip Kendall).

* Various other minor bugfixes.

Changes since version 1.1.1.1:
New features:
* Add Currah µSource emulation (Stuart Brady).
* Add Didaktik 80/40 emulation (Gergely Szasz).

Emulation core improvements:
* Allow continuing RZX recordings if there is a final snapshot in the RZX (Sergio Baldoví).
* Fix the prune function on RZX rollback (Sergio Baldoví).
* Use SZX format for the initial snapshot in RZX files (Sergio Baldoví).
* Fix loading of EDSK files with Sector Offset block (Sergio Baldoví).
* Migrate disk "index event" handling to the FDD layer and have the FDC layer use it for their STATUS registers (Gergely Szasz).
* Implement WD2797 emulation (Gergely Szasz).
* Centralise the "Disk icon" update code to the FDD layer (Gergely Szasz).
* Fix disk image corruption after saving UDI files (Sergio Baldoví).
* Check ready status after loading a disk into floppy disk drive (thanks, John Elliott) (Sergio Baldoví).
* Fix overlapped SEEK commands (Sergio Baldoví).
* Fix length of data returned by READ_DIAG (thanks, Fredrick Meunier) (Sergio Baldoví).
* Fix writing .td0 format disk files (Sergio Baldoví).
* Fix speech in Cobra's Arc - Medium Case.tzx when loaded with tape traps enabled (thanks, zx81 and Sergio Baldoví) (Fredrick Meunier).
* Skip tape traps if VERIFY is requested (UB880D).
* Fix loading sound with some custom loaders (Fredrick Meunier).
* Check if data blocks are headers for handling PZX files (Fredrick Meunier).
* Correct display of pulses in PZX pulse block for tape browser (Fredrick Meunier).
* Set AF, AF' and SP to 0xffff on reset (Stuart Brady).
* Leave most registers unchanged on a soft reset (Stuart Brady).
* Emulate interrupt and NMI timings more precisely (Stuart Brady).
* Emulate NMOS and CMOS Z80 variants (Stuart Brady).
* Switch to 2KB page size (Stuart Brady).
* Fix inaccurate output when AY envelopes are used (Matthew Westcott and Fredrick Meunier).
* Fix some peripherals activation when loading snapshots (Sergio Baldoví).

Machine specific improvements:
* The address range 0x4000 - 0x7FFF is contended on the TS2068 in the home, Dock and Exrom banks (thanks, Richard Atkinson). It is assumed that this is the same for other Timex models (Fredrick Meunier).
* Clear all Opus RAM on hard reset (Stuart Brady).
* Ensure the ZX Printer does not require a hard reset to enable (thanks, RMartins) (Fredrick Meunier).
* Fix timing of events when emulating Scorpion (Stuart Brady).
* Ensure we have successfully selected a Pentagon or a Timex machine before inserting their media (Fredrick Meunier).
* Prefer Scorpion to Pentagon when loading SCL/TRD disks for better timing compatibility (thanks, windale) (Sergio Baldoví).
* Fix Beta 128 type II commands (thanks, windale and BogDan Vatra) (Sergio Baldoví).
* Don't enable the Beta 128 interface when loading a snapshot on a machine with Beta built-in (thanks, windale and BogDan Vatra) (Fredrick Meunier).
* Lock port +3 1FFDh if paging is disabled (Brian Ruthven and Fredrick Meunier).
* Spectranet: fix segfault in error handling when setting SO_REUSEADDR (Stuart Brady).
* Update SE ROMs to v4.07 (thanks, Andrew Owen) (Sergio Baldoví).

Debugger improvements:
* Fix disassembly of LD (HL), LD (IX) and LD (IY) (BogDan Vatra).
* Add I and R register setting and getting to the debugger (Sergio Baldoví).
* Show the status of the halted flag in the debugger (Stuart Brady).
* Fix time breakpoints later than a frame in the future (Sergio Baldoví).
* Timex EXROM and Dock text was truncated in the debugger UI (thanks, Andrew Owen and Sergio Baldoví) (Fredrick Meunier).
* Fix memory issues when removing a matched breakpoint (Tom Seddon).
* Signal the UI when the breakpoints list is changed (BogDan Vatra).
* Document IF token for conditional expressions in debugger section (thanks, TK90XFan) (Sergio Baldoví).
* Fix documentation of address syntax used in debugger section (Sergio Baldoví).
* Allow debugger to dereference memory locations (Philip Kendall).
* Allow strings with escaped spaces in the debugger (Sergio Baldoví).
* Make wildcard event breakpoints work (thanks, Sergio Baldoví) (Philip Kendall).
* Protect divide expression from a divide by zero exception (Fredrick Meunier).

Miscellaneous improvements:
* Fix save tape traps with SE ROM (Andrew Owen and Fredrick Meunier).
* Don't ignore the return code from setuid() (Sergio Baldoví).
* Generic FDD UI handling cleanup (Alex Badea).
* Remove unused macros on disk peripherals (Sergio Baldoví).
* Link to autoload snapshot for NTSC Spectrum (Sergio Baldoví).
* Don't show an error when rewinding an empty tape (Sergio Baldoví).
* Add missing const qualifiers and casts (Stuart Brady and Sergio Baldoví).
* Only try to load the fallback ROM if it is different to the standard one (Fredrick Meunier).
* Use PATH_MAX instead of FILENAME_MAX as our standard compatibility define (thanks, Brian Ruthven) (Fredrick Meunier).
* Fix C89 compilation (Adrien Destugues).
* Add static to functions where appropriate (Stuart Brady).
* Track port attachment for each data bus line (Stuart Brady).

Various other minor bugfixes.