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My N64 port of GNUBoy GB/GBC color emulator.90% of rendering code has been written in mips32 assembly. Also features my static recompiler for RDP gpu
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DimitrisVlachos/Gnuboy64
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22/3/14: +64Drive is now supported (Thanks to Marshall(64drive.retroactive.be) for the sample cart) 8/3/14: +Implemented full ROM version with embedded tiny fs (also supports save State(max 1)/Sram+Rtc saves) +Implemented a very primitve SRAM file system +Did some hackish changes for the rombuild around the source code to simplify things(ie too lazy to implement proper rom fs driver) +Wrote a simple tool to import GB/GBC files + state files into the rom build (Works with mess emulator aswell) Initial version: +~90+% of lcd code has been rewritten in mips assembly +Added more cpu precomputed lookup tables&improved original code +Almost 1MB of rom data are precomputed lookup tables (Yikes!!!) +Wrote an improved algorithm for vram pixel data updates that reduces the linear complexity of the original +Implemented mem_map_ptr for direct HDMA mapping & mem_read_range & mem_write_range for unmap-able addresses +Added lookup table for precomputed vram flags +Added lookup tables for precomputed sprite flags(gb&cgb) +Added r8g8b8/r5g5b5a1 palette 3268*sizeof(u32) precomputed lookup tables (32bit mode is not used as it doesn't "offer" anything other than wasting more ram.Make custom builds of the code if you want that feature...) +Improved sprite sorting code +Sound mixer was heavily optimized +Sound wave frequency is calculated using a constant reciprocal table that replaces some divisions with a fraction mult.. +Improved sound reg reads/writes +Improved loader code (Re-allocations for alignment are replaced with header fetching + one allocation) +Implemented file system wrappers & drivers (other flashcarts can be supported aswell) +Implemented custom low level non blocking audio driver +Fixed memory leaks found in the original code +Made countless tools +Uses the most recent GCC sdk toolchain version(4.8.1)
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My N64 port of GNUBoy GB/GBC color emulator.90% of rendering code has been written in mips32 assembly. Also features my static recompiler for RDP gpu
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