SDK v20.2.1

Bug fixes

• llvm-mos/llvm-mos#479 - Fixed linker crash when constant subtractions less than -128 are folded into zero page indexed addressing
  • 16-bit indexed addressing is used instead
  • This release also allows folding subtractions <= -128 into zero page indexed addressing, which the linker would previously disallow
• #378 - Fix odd behavior of atari minimal getchar by buffering a full line
  • atari's getchar requires a line to be read at a time without any intervening writes to the screen to operate correctly, but typical C practice does not expect interleaving putchar and getchar to interrupt the action of getchar.

SDK v20.2.0

New targets

• #375 - geos-cbm - Create applications for Commodore GEOS! - @Dirk-Schnorpfeil
  • See https://github.com/llvm-mos/llvm-mos-sdk/blob/main/mos-platform/geos-cbm/README.md

Optimizations

• llvm-mos/llvm-mos#474 - Follow TAX and TAY when optimizing immediate loads - @pfusik

Bug fixes

• llvm-mos/llvm-mos#476 - Allow the project to compile on Apple Silicon again - @pr1metine
• #376 - Fix strpbrk (and thus strtok) - @ivop

SDK v20.1.0

New features

• #365 - commodore - Add LOAD flag enum, including specific values for the cx16 - @mlund
• #367 - cx16 - Add missing emulator registers - @mlund
• #372 - cx16 - Add JSRFAR macro - @mlund
• #368 - cx16 - Add ROM bank label enum - @mlund
• #369 - cx16 - Split wrapper routines into dedicated sections for linker garbage collection - @mlund
• #370 - cx16 - Add VERA PSG register data structure (__vera_psg) - @mlund

Optimizations

• #373 - commodore- Implement KERNAL LOAD function using inline assembly - @mlund

Bug fixes

• #366 - cx16 - Correct leaf attribute placement - @mlund

SDK v20.0.0

Breaking changes

• #357 - cx16 - Improve interface of cx16_k_joystick_get - @mlund
• freopen(NULL, ...) now fails unconditionally - @pfusik
  • This is simpler than attempting to reopen the file, and the prior implementation was buggy. Failing is allowed by the C standard, and it's "good enough for Windows CRT".

Bug fixes

• #357 - cx16 - Fix joystick bitmasking bugs in cx16.h - @mlund
• #354 - Fix double free in freopen on OOM - @pfusik
• Fix memory errors on freopen failure - @pfusik
• #362 - Prevent fopen(filename, "a") from truncating file like fopen(filename, "w") - @pfusik
• #364 - Fix use after free in _stdio_closeall (file closure at program end) - @pfusik

Optimizations

• Various code size and performance optimizations for freopen - @pfusik

SDK v19.1.1

Bug fixes

• #351 - Fix memory leak on internal error in fopen - @pfusik
• #352 - Fix null dereference on internal error in tmpfile - @pfusik

Examples

• #350 - Added Commander X16 C++ plasma example - @mlund

SDK v19.1.0

New features

• #347 - [mega65] - Add DMA hardware registers and examples - @mlund

Optimizations

• llvm-mos/llvm-mos#471 - Prevent debug instructions from preventing late copy optimization - @Domkeykong

SDK v19.0.0

Breaking changes

• cx16 - 2850b2a - Exit by return to BASIC on Commander X16 (rather than the infinite loop of other Commodore targets)
  • This target's BASIC functions somewhat more like a shell than the other Commodore family targets, and along those lines, it manages to keep most of the zero page available for user programs. Accordingly, C can be seen to operate within, rather than replace, the BASIC environment.
• neo6502 - #345 - Output .neo file format instead of raw binary - @bcampbell

Bug fixes

• cx16 - 8b32a54 - Add DEVNUM to cx16.inc to fix file routine linking
• cx16 - 255502c - Don't rts from file I/O init/fini snippets to prevent early return

SDK v18.0.0

Breaking changes

• #342 - commodore family targets now infinitely loop on exit
  • This fixes a day-one SDK bug with the commodore targets. They freely clobber BASIC ZP, but they then return to BASIC. This is arguably a bug fix, but I'm marking it as a breaking change due to how significantly the behavior changes.
  • See #341.

New features

• From upstream, C23's #embed is now supported. This allows turning arbitrary binary files into comma-separated lists of numbers in the preprocessor, for direct inclusion in character arrays.

SDK v17.1.2

Bug fixes

• #336 - [atari] Fix crash on out-of-handles - @pfusik
• #338 - [PC Engine] Fix incorrect joypad button mask (#335) - @asiekierka
• 8bc67c8 - Fix Mesen2 printf LUA script

Optimizations

• #337 - [atari] Optimize findfreeiocb - @pfusik
• #340 - [atari] Optimize file descriptor routines - @pfusik

SDK v17.1.1

Bug fixes

• 63e13de - Fix minimal stdio ungetc (and thus scanf)
  • The ungetc buffer was accidentally given type bool, so the characters that scanf would ungetc would be forced to 1.