Ares Git Update (May 11, 2026)

Ares Git (2026/05/11) is a multi-system emulator that emphasizes accuracy and preservation, evolving from higan and bsnes since 2004. It currently emulates 27 hardware devices, including the Famicom, Nintendo 64, Game Boy, and more. Recent updates include significant improvements in CPU JIT for the N64, enhancing polling accuracy, reducing interrupt latency, and refining internal handling of instructions. Multiple updates were made to the libchdr library, and extensive documentation was added to the JIT system. Overall, the emulator aims for improved performance and compatibility with various devices. Download it for x64 from the provided source.

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Ares Git (2026/05/11) has been compiled. Ares is a versatile emulator that started its development on October 14th, 2004. It is a descendant of higan and bsnes, prioritizing accuracy and preservation.

Ares currently supports the emulation of the following 27 hardware devices:
* Famicom + Famicom Disk System
* Super Famicom + Super Game Boy
* Nintendo 64 (in development)
* Game Boy + Game Boy Color
* Game Boy Advance + Game Boy Player
* SG-1000 + SC-3000
* Master System + Game Gear
* Mega Drive + Mega CD
* PC Engine + PC Engine CD + SuperGrafx
* MSX + MSX2
* ColecoVision
* Neo Geo Pocket + Neo Geo Pocket Color
* WonderSwan + WonderSwan Color + SwanCrystal + Pocket Challenge V2

Changelog for Ares Git:
* sfc: Enhanced autojoypad polling accuracy
* Updated libchdr to version 0.3.0
* n64: Improved documentation for CPU JIT
* n64: Reduced JIT interleaving slightly (unfreeze Conker)
* n64: Corrected interrupt generation to prevent occurring mid-instruction
* n64: Addressed interrupt latency issues
* n64: Revised CPU JIT flush messages
* n64: Increased JIT interleaving with additional forced syncs on MMIOs
* n64: Alleviated interrupt latency to zero in JIT
* n64: Correctly declared 6 scratch registers in CPU JIT
* n64: Verified internal assumptions on block links in CPU JIT
* n64: Implemented LL/SC/LLD/SCD in CPU JIT
* n64: Rewrote branches using branchless code in CPU JIT
* n64: Extended blocks beyond jumps and links in CPU JIT
* n64: Updated serializer
* n64: Synchronized CPU/RSP on status and semaphore I/O in CPU JIT
* n64: Fixed LWR in CPU JIT
* n64: Computed homebrew dcache dirty mask after stores in CPU JIT
* n64: Configured CPU interleaving with other hardware
* n64: Segregated recompiler into three files
* n64: Cleaned up to eliminate redundant structure fields in CPU JIT
* n64: Enhanced integration between JIT and GDB for better performance
* n64: Ensured events in the queue affect JIT timings
* n64: Resolved a bug in TLB handling (e.g., Linux) in CPU JIT
* n64: Simplified the decoder, removing unnecessary code in CPU JIT
* n64: Allowed blocks to extend through branches in CPU JIT
* n64: Minimized excessive JIT thrashing by reducing 4K section granularity
* n64: Omitted pipeline prologue for linear instructions in CPU JIT
* n64: Made epilogue code conditional in fast paths in CPU JIT
* n64: Returned pipeline information from emit functions in CPU JIT
* n64: Added SDL/SDR/SWL/SWL/SWC1/SDC1 in CPU JIT
* n64: Implemented LWL, LWR, LDL, LDR, LWC1, LDC1 in JIT
* n64: Used JIT-time PC for branches as much as feasible in CPU JIT
* n64: Optimized comparisons in FPU JIT
* n64: Drafted implementation for compare opcodes in FPU JIT
* n64: Added MOV.S/MOV.D implementations in FPU JIT
* n64: Included comments and minor tweaks for underflow fixes in FPU JIT
* n64: Reduced input checks for conversion opcodes in FPU JIT
* n64: Decreased reliance on C++ for conversions in FPU JIT
* n64: Simplified conversion opcodes in FPU JIT
* n64: Fixed a minor typo in FCVT_D_L
* n64: Completed float/int conversions in FPU JIT
* n64: Implemented ALU double opcodes in FPU JIT
* n64: Refactored and cleaned up FPU JIT opcode emission
* n64: Implemented FADD.S and FSUB.S in FPU JIT
* n64: Established unity codepaths for arity 1/2 in FPU JIT
* n64: Added support for MUL.S and DIV.S in FPU JIT
* n64: Implemented passthrough for flag bits from the host processor in FPU JIT
* n64: Simplified FPU JIT by moving code into nall/recompiler
* n64: Initiated FPU JIT implementation for AMD64
* n64: Began FPU JIT implementation for ARM64
* n64: Eliminated deferred PC/nextpc/pipeline materialization in CPU JIT
* n64: Refactored to remove outdated decoder JIT flags
* n64: Added optimizations for accessing via $sp/$gp in JIT
* n64: Implemented memory store opcodes in JIT
* n64: Integrated all aligned load opcodes in JIT
* n64: Removed confusing callf macro in JIT
* n64: Optimized dcache to utilize a single word with both tag and valid bit
* n64: Introduced JIT for LW as a preliminary experiment
* n64 cpu: Inlined MFC1/MTC1/DMFC1/DMTC1 in JIT when COP1 is enabled.
* n64: In CPU JIT, inlined management of icache
* nall: Added mov128 and mem0 for absolute addressing
* n64: In CPU JIT, inlined fast path of icache hit checks
* n64: Simplified branch link management in CPU JIT
* n64: JIT multiplied/divided SPECIAL opcodes using SLJIT
* n64: Lazily emitted callf setup in CPU JIT
* n64: Centralized JIT callf setup
* n64: JIT 64-bit shifts and trap opcodes
* n64: JIT additional 64-bit integer ALU operations
* n64: Enhanced CPU JIT ALU slow paths
* n64: Conditionalized JIT pipeline state machinery
* n64: Deferred nextpc materialization in JIT hot paths
* n64: Lazily committed ipu.pc in JIT loop
* n64: Materialized CPU pipeline pc only when necessary
* n64: Flushed deferred CPU cycles exclusively on branch/helper opcodes
* n64: Reinstated unconditional CPU JIT endblock checks
* n64: Integrated virtual PC materialization in CPU JIT loop
* n64: Avoided unconditional JIT step flush in hot loops
* n64: Gate JIT EndBlock checks on branch and helper ops
* n64: Removed CPU JIT metrics instrumentation
* n64: Expanded JIT branch linking to dual targets
* n64: Incorporated safe intra-section JIT block linking
* n64: Refactored CPU JIT to implement 4K sections and state key
* n64: Included JIT documentation
* n64: Converted remaining CPU branch opcodes to JIT
* n64: Converted four CPU branches to JIT and silenced offsetof warnings
* n64: Converted four additional CPU branches to JIT
* n64: Converted BEQ to JIT
* n64: Initial cleaned-up CPU JIT, introducing opcode decoder