v1.1.1.pre-2¶ ↑

Z80:¶ ↑

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.
Added :time_alt, :unroll, and :unroll_alt optimization options to Z80::MathInt::Macros#divmod, divmod16_8, divmod24_8 and internally reworked them.
Optimized internal loop of Z80::MathInt::Macros#mul, mul8 and mul8_24 routines.
Added option :optimize 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.

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.

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::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::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::Gallery displays various ZX Spectrum screen formats, including SCLD, ULAplus (also HAM256) modes.
ZXUtils::BigFont::Macros features high resolution mode; ZXUtils::BigFontHires program.

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.