v1.2.0.pre-1¶ ↑

Z80:¶ ↑

• Z80#debug method no more prints anything except printable ASCII characters.

• Optimized Z80::MathInt::Macros#rnd by using mul_const8_24a (size -10, time -40).

• Added Z80::MathInt::Macros#mul_const8_24a macro as an alternative to mul_const8_24.

• Added Z80::MathInt::Macros#mul_const_ex macro as an alternative to mul_const.

• Added options :sl and :zero to Z80::MathInt::Macros#sll8_16 and optimized the routine.

• Z80::MathInt::Macros#neg16 accepts a constant or nil argument allowing to sign extend 8-bit integers to a negative 16-bit.

• New helper functions Z80::MathInt::Macros#leading_zeros and trailing_zeros.

• New macro Z80::MathInt::Macros#mul8_24a introduce faster multiplication algorithm.

• Added :mbit9_carry option to Z80::MathInt::Macros#mul8_24.

• New method Condition#not to logically inverse a branching condition.

• Z80::MathInt::Macros#mul… macros allow some combination of arguments that wasn't possible before.

• New macros Z80::MathInt::Macros#mul16, mul16_signed and mul16_signed9 introduce faster multiplication algorithm and :unroll optimization option.

• Minor branching optimization of Z80::MathInt::Macros#divmod8 and divmod16.

• Added options :check0_far, :k_leq_m, :ignore_cf to Z80::MathInt::Macros#divmod, divmod16_8 and divmod24_8.

• Internally reworked and added :time_alt, :unroll, and :unroll_alt optimization options to Z80::MathInt::Macros#divmod, divmod16_8, divmod24_8.

• Optimized internal loop of Z80::MathInt::Macros#mul, mul8 and mul8_24 routines.

• Added options :kbit9_carry, :tl_is_zero and :optimize to Z80::MathInt::Macros#mul.

• Added :optimize option to Z80::MathInt::Macros#mul_signed.

• New macro Z80::MathInt::Macros#mul8_signed.

• New macro Z80::MathInt::Macros#mul_signed9.

• New macro Z80::MathInt::Macros#mul_signed9_24.

• New macro Z80::MathInt::Macros#sll8_16.

• New macro Z80::MathInt::Macros#divmod16_8.

• Saved 1 cycle on macro Z80::MathInt::Macros#mul.

• New macro Z80::MathInt::Macros#sign_extend.

• New options :k_int24 and :optimize for Z80::MathInt::Macros#mul8_24, saved 2 cycles.

• Z80::Utils::SinCos::Macros#sincos_from_angle enhanced arguments to support providing registers.

ZXLib:¶ ↑

• A new escape sequence ' (carriage return) and handling of “r” code added to the BASIC tokenizer.

• Immediate argument optimization of ZXLib::Gfx::Macros#copy_shadow_screen_region.

• Slight optimization of ZXLib::Gfx::Macros#clear_screen_region_fast.

• New macro ZXLib::Gfx::Macros#ytoattr.

• Internal labels preshift_p, pmask_in_e, px_bsh_in_ae added to ZXLib::Gfx::Draw::Macros for convenience and alternative entry points.

• New routines in ZXLib::Gfx::Draw::Macros for updating draw line functions in place.

• Changed arguments of ZXLib::Sys::Macros#read_integer32_value to 4 8-bit registers instead of 2 16-bit registers, maintaining backward compatibility.

Z80Lib3D:¶ ↑

• New library created.

• Z80Lib3D::Primitives struct collection added.

• Z80Lib3D::Quaternion module with helper functions added.

• Z80Lib3D::Matrix3D class with macros for applying matrices added.

• Float::to_fixed16_8 method defined in fixed_float.rb file.

v1.1.0¶ ↑

• FIXED: Z80::Program#ns with merge option enabled was discarding parent label context in debug output.

• More benches and tests.

• Improvement: use Z80::Program#define_label instead of send to define dynamic labels in several places.

• Several docs improvements.

Z80:¶ ↑

• Z80::Program#debug_comment (Z80::Program#dc!) helper method for including user comments in debug output.

• Z80::Program#alias_label (Z80::Program#as) helper for creating namespace anchored lazy label aliases (visible in debug output).

• Z80::Program#direct_label? and Z80::Program#direct_address? helpers.

• Z80::TAP FIXED - byte block larger than the length indicated in the tap header will be truncated instead of raising an error.

• Z80::TZX recognize and skip common meta chunks.

• Z80::MathInt::Macros#twos_complement16_by_sgn macro - sgn argument can be accumulator and the new option t.

• Z80::MathInt::Macros#utobcd macro features new input_end option.

• Z80::Program::Macros#cp16n optimized comparing with a constant number < 256.

• new sugar macro Z80::Program::Macros#cp16rr.

• Z80::Program#select now allows conditional blocks without any code produced and else-only conditional blocks when only label validation is needed.

• Z80::Utils::Sort::Macros producing selected sorting algorithm routines.

ZXLib:¶ ↑

• ZXLib::Sys new labels: if1vars (ZX Interface 1), vars128 (128k), io_plus (ULAplus), memT2k.rambot, more ROM routines.

• new macro: ZXLib::Sys::Macros#move_basic_above_scld_screen_memory for safely accessing SCLD shadow screen from BASIC.

• ZXLib::Gfx::Sprite8 CALCULATE_SCREEN_ADDRESS and CHECK_HEIGHT_SANITY control constants; new sugar ZXLib::Gfx::Sprite8::Macros; maskshift label exported and slightly optimized ZXLib::Gfx::Sprite8::Macros#gfx_sprite8_calculate_coords macro.

• ZXLib::Gfx::Macros#clear_screen_region_fast macro - FIXED corner cases, now accepts odd number of columns, optimized for constant arguments, new options: addr_mode, scraddr and subroutine.

• new macros: ZXLib::Gfx::Macros#clear_attrs_region_fast, ZXLib::Gfx::Macros#copy_shadow_screen_region, ZXLib::Gfx::Macros#copy_shadow_attrs_region, ZXLib::Gfx::Macros#copy_shadow_attrs_region_quick and ZXLib::Gfx::Macros#copy_shadow_screen_region_quick.

• Macros ZXLib::Gfx::Macros#nextline, ZXLib::Gfx::Macros#prevline and ZXLib::Gfx::Macros#ytoscr features new hires option.

• Macro ZXLib::Gfx::Macros#xytoscr renamed to better reflecting argument order ZXLib::Gfx::Macros#yxtoscr and aliased as old name for backward compatibility.

• New ZXLib::Gfx::Bobs::Macros for drawing and manipulating bitmap objects.

• ZXLib::Basic recognizes SE BASIC instructions when parsing source, and ZXLib::Basic::Program#to_source can list SE BASIC tokens with se option enabled.

ZXUtils:¶ ↑

• ZXUtils::Gallery displays various ZX Spectrum screen formats, including SCLD, ULAplus (also HAM256) modes.

• ZXUtils::BigFont::Macros features high resolution mode; ZXUtils::BigFontHires program.

Bins:¶ ↑

• zxgallery: creates ZXUtils::Gallery .tap file from provided .scr files.

• zxconv: v0.5 - saves hi-res and hi-color screens in a proper ULAplus extended SCR format.

• zxrun: v0.2 ZXEMU_PATH OS environment variable overrides emulator program; arguments passed to the emulator after --.

• zxinit: v0.3 program template now includes all zxlib modules.

v1.0.0¶ ↑

• Initial release.