Issues

• FPU bug - FSIN/FCOS/FSINCOS compute via IEEE double (53-bit) precision, not extended (64-bit) precision — mantissa's low 11+ bits are always zero

  kstenerud/Musashi#121 · Filter by author harrowm opened on Sep 16, 2026

• FPU emulation - FMOD (opcode $21) is silently an alias for FREM — the quotient is never truncated

  kstenerud/Musashi#120 · Filter by author harrowm opened on Sep 16, 2026

• Two bugs found in Musashi's FPU emulation (m68kfpu.c)

  kstenerud/Musashi#119 · Filter by author harrowm opened on Sep 16, 2026

• Address decoding for EC020 broken when M68K_EMULATE_010 is OPT_OFF

  kstenerud/Musashi#115 · Filter by author jimshawx opened on Oct 30, 2025

• Crash in m68k_op_divl_32_d

  kstenerud/Musashi#113 · Filter by author dirkwhoffmann opened on Feb 25, 2025

• Multithreaded emulation: Remove globals and take context argument pervasively

  kstenerud/Musashi#112 · Filter by author eschaton opened on Dec 16, 2024

• Switch to <stdint.h> types pervasively instead of int, unsigned, etc.

  kstenerud/Musashi#111 · Filter by author eschaton opened on Dec 16, 2024

• sprintf

  kstenerud/Musashi#108 · Filter by author mix127 opened on Jun 22, 2024
  1

• example program.bin corrupted

  kstenerud/Musashi#101 · Filter by author gabriele-galeotti opened on Oct 25, 2023
  2

• Negligible documentation error

  kstenerud/Musashi#95 · Filter by author TomHarte opened on Sep 19, 2022

• Bug in MOVEC implementation

  kstenerud/Musashi#94 · Filter by author dirkwhoffmann opened on Aug 10, 2022

• Disassembler bug in get_ea_mode_str

  kstenerud/Musashi#93 · Filter by author dirkwhoffmann opened on Aug 7, 2022

• Disassembler inconsistency

  kstenerud/Musashi#92 · Filter by author dirkwhoffmann opened on Aug 7, 2022

• m68k_pulse_reset(), make boot PC + SSP optional

  kstenerud/Musashi#91 · Filter by author shoggoth77 opened on Aug 5, 2022

• Wasm port

  kstenerud/Musashi#88 · Filter by author Specy opened on May 9, 2022

• Documentation change

  kstenerud/Musashi#86 · Filter by author paulscottrobson opened on Feb 22, 2022

• SoftFloat License

  kstenerud/Musashi#77 · Filter by author carmiker opened on Feb 7, 2021
  3

• branch_8 and branch_16 dont call pc changed

  kstenerud/Musashi#76 · Filter by author chriscamacho opened on Sep 5, 2020

• useless & CPU intensive operation could be avoided

  kstenerud/Musashi#72 · Filter by author jotd666 opened on Mar 7, 2020
  4

• m68ki_read_imm_* vs M68K_SEPARATE_READS && M68K_EMULATE_PMMU

  kstenerud/Musashi#69 · Filter by author John-Titor opened on Feb 2, 2020

• Long Double Constant assigned to Double breaks Win Compile

  kstenerud/Musashi#68 · Filter by author cnvogelg opened on Jan 27, 2020

• Undefined behaviour

  kstenerud/Musashi#67 · Filter by author dirkwhoffmann opened on Jan 10, 2020

• CHK instruction, N flag

  kstenerud/Musashi#66 · Filter by author dirkwhoffmann opened on Jan 5, 2020

• Opcode $f620 (move16 on 68040)

  kstenerud/Musashi#65 · Filter by author dirkwhoffmann opened on Jan 4, 2020

• Opcodes $60FF, $61FF, $F518

  kstenerud/Musashi#64 · Filter by author dirkwhoffmann opened on Jan 4, 2020