millfork/CHANGELOG.md

Change log

Current version

• Breaking change! The petscii encoding now uses the $C0-$DE range for uppercase characters instead of $60-$7E. This matches both the CC65 behaviour and the return values from readkey().

• Added support for the Japanese version of Commodore 64.

• Added segment block statement.

• Added goto.

• Added bool type.

• Added function pointers – so far quite limited.

• Added arrays of elements of size greater than byte.

• Added .length for large arrays and .lastindex for numerically indexed arrays.

• New text encodings: petjp, petscrjp, msx_intl, msx_jp, msx_ru.

• Improved passing of register parameters to assembly functions.

• Enabled declaring multiple variables in one line.

• Fixed detection of duplicate names in declarations.

• 6502: Fixed expressions of form p[i] <<= 1.

• 6502: Fixed optimizations involving the zeropage pseudoregister.

• Z80: Fixed optimizations in functions using stack variables.

• Other fixes and improvements.

0.3.4

• Preliminary experimental Game Boy support.

• Preliminary MSX support.

• Super experimental and very incomplete Intel 8086 support via 8080-to-8086 translation.

• Support for Intel 8085, together with illegal instructions.

• More label file formats.

• Added memory_barrier macro.

• Added keyboard module.

• Added random module.

• Added init_rw_memory module for cartridge targets.

• Breaking change! Preinitialized writable arrays on cartridge targets can no longer be read before an explicit call to init_rw_memory, either add the call or make the arrays const.

• Added ensure_mixedcase function and oldpet and origpet text encodings.

• Added MILLFORK_VERSION preprocessor parameter.

• Added structs and unions.

• Added unsigned byte division and modulo.

• Pointers can now be allocated anywhere.

• Pointers can now be typed.

• Added nullptr.

• You can now take a pointer to a stack variable.

• Arrays can now have elements of types other than byte (still limited in size to 1 byte though) and be built out of struct literals.

• Arrays can now be constant.

• Arrays can now be local.

• Added hint for identifiers with typos.

• Aliases now also support subfields.

• Short functions can be now defined using expression syntax.

• On most Commodore targets printing double quote characters doesn't toggle the quotation mode anymore.

• Potentially breaking change! Commodore 128 target no longer defines CBM_64 feature.

• Fixed the NES examples and the nes_joy module.

• 6502 targets can now define free zeropage bytes, not only pointers.

• 6502: Fixed optimizations using index registers.

• 6502: Fixed optimizations of comparisons.

• 6502: Fixed optimizations near for loops over in-place lists.

• Preprocessor: Added #use A=B directive

• Preprocessor: Added if function

• Preprocessor: Added #define directive.

• Fixed volatile-related bugs.

• Fixed optimizations removing jumps to jumps.

• Fixed optimizations removing pointless stores to local variables.

• Fixed name clashes when passing parameters to functions and macros.

• Fixed #use not accessing all preprocessor parameters.

• Fixed #pragma not respecting #if.

• Fixed nested #ifs.

• Fixed @long and @long_be array filters.

• Fixed for-each loops with non-constant arrays.

• 8080 and LR35902: Fixed inlining of byte-sized variables into registers.

• 8080 and LR35902: fixed large stack variables.

• Other bug fixes.

• Optimization improvements.

0.3.2

• Almost complete support for the Zilog Z80, Intel 8080 and Sharp LR35902 microprocessors.

• A very incomplete support for NEC PC-88, ZX Spectrum, CP/M and Amstrad CPC.

• Unified the syntax of commandline switches.

• Automatic detection of the standard include path.

• Added aliases.

• Added enumeration types.

• Added preprocessor.

• Added for loops over enum types and in-place lists

• Added align keyword for choosing data and code alignment.

• Added original line numbers in assembler output.

• Added sizeof operator.

• Added preliminary support for volatile keyword.

• Added multiplication of a 16-bit number by an unsigned 8-bit number.

• Added more warnings.

• Automatic selection of text encoding based on target platform.

• Text literals can be now used as expressions of type pointer.

• Extra z at the name of the encoding means that the string is zero-terminated.

• Potentially breaking change! No longer allowed to define things with names that are keywords or builtins.

• Potentially breaking change! Curly braces in text literals are now used for escape sequences.

• Potentially breaking change! Changed the c64_basic module.

• Potentially breaking change! scr now refers to the default screencodes as defined for the platform. Code that uses both a custom platform definition and the scr encoding needs attention (either change scr to petscr or add screen_encoding=petscr in the platform definition file).

• Potentially breaking change! Platform definitions now need appropriate feature definitions. Code that uses a custom platform definitions will cause extra warnings until fixed.

• Software variable stack for 6502.

• Other optimizations and fixes for stack variables.

• Various code deduplication optimizations.

• Fixed emitting constant decimal expressions.

• Fixed decimal subtraction.

• Fixed signed comparison.

• Fixed for...downto loops.

• Fixed invalid optimization of loads before BEQ and similar

• Fixed miscompiled nonet calls.

• Parser performance improvement.

• Standard libraries improvements.

• Other improvements.

0.3.0

• Finally faster than C.

• Licenced the standard library more permissively.

• Preliminary Atari 2600, BBC Micro and LUnix support.

• Added array initialization syntax with for.

• Added multiple new text codecs.

• Added character literals.

• Added 24-bit farword type.

• Special array layouts, e.g. @word.

• Fixed invalid offsets for branching instructions.

• Fixed incorrectly overlapping local variables.

• Fixed broken downto loops.

• Fixed broken comparisons between variables of different sizes.

• Fixed several other bugs.

• Tons of optimizer improvements.

• Other improvements.

0.2.2

• Allowed adding constant words to variable bytes without the zeropage pseudoregister.

• -fzp-register is now enabled by default, as the documentation has already been saying.

• Allowed more kinds of constants within variable and array initializers.

• Fixed several bugs.

• Other improvements.

0.2

• Breaking change! Renamed inline to macro.

• Breaking change! Added support for memory segments. Changed the platform definition file syntax.

• Added preliminary support for 65CE02, HuC6280 and 65816 processors.

• Added support for Famicom/NES and C64 with SuperCPU.

• Added new -O1 optimization preset; old -O1 became -O2, old -O2 became -O3 and so on.

• Added command line options for controlling the size-speed trade-offs.

• Added support for parameters for macros written in Millfork.

• Enabled calling macros with index expression parameters.

• Enabled calling macros from assembly.

• Added optimizer hints: inline, noinline, register.

• Added command line flags --size, --fast, --blast-processing.

• Removed command line flag --detailed-flow. Detailed flow analysis was slow, broken, hard to maintain, and didn't even help that much.

• Added *'=, nonet, hi and lo operators.

• Added support for zeropage pseudoregisters, allowing for some operators work with more types of operands.

• Added return dispatch statements.

• Added break and continue statements.

• Allowed the else if combination (i.e. the else branch doesn't have to be in braces if it's just a single if-else statement).

• Added octal and quaternary literals.

• Fixed several allocation bugs.

• Fixed several optimization bugs.

• Fixed several C64 and C16 library bugs.

• Fixed several other bugs.

• Other improvements.

0.1

• Initial numbered version.