zanacandClaude Opus 5.5
7ed1af5370
Renderer: - texture sheets also kept one byte per texel, the texel fetch reads them straight (inlined, an opaque and a translucent span) - the pixel of each texel worked out once for the colours of a polygon - translucent texel pairs packed from a table; a translucent pixel sure to be discarded skips the next mipmap level - 3D pixels kept as the 15-bit colour of the bitmap - the tile layers drawn straight into the bitmap: the polygons are only drawn over the tile pixels behind them, no copy passes System 24 tiles (rgb version, Model 1 and 2): eight pixels at a time, a group all of the layer's priority without a test each, the last pixels of the line as groups too. SCSP DSP: the steps that only multiply and accumulate on a short path, decoded when MPRO changes; the delay RAM float packing from a table. i960: opcodes read straight from the memory block of the last fetch (memory_get_read_range), execute_op inlined. SHARC: no DMA call while channels 6 and 7 are idle. AArch64 (QEMU, instructions per frame): fvipers -26%, doa -28%, daytona -31%, vf2 -25%. Frames and audio are the same on the Model 2 sets, the ST-V sets and in save states. Claude-Session: https://claude.ai/code/session_013Vje3pEtpLHubqCGwCgoQX Co-authored-by: Claude Opus 5.5 <[email protected]>
What is MAME 2003-Plus?
MAME 2003-Plus (also referred to as MAME 2003+ and mame2003-plus) is a libretro arcade system emulator core with an emphasis on high performance and broad compatibility with mobile devices, single board computers, embedded systems, and similar platforms.
In order to take advantage of the performance and lower hardware requirements of an earlier MAME architecture, MAME 2003-Plus began with the MAME 2003 codebase which is itself derived from xmame 0.78. Upon that base, MAME 2003-Plus contributors have backported support for an additional 350 games, as well as other functionality not originally present in the underlying codebase.
What games are supported?
View our live compatibility table built using datmagic, a tool created by the MAME 2003-Plus team. Datmagic auto-generates a compatibility table based on the latest XML DAT file. See an incorrect entry? Create a new issue to let us know! This allows us to keep the compatibility table as accurate as possible by fixing it at the source.
Authors: MAMEdev, MAME 2003-Plus team, et al (see LICENSE.md and CHANGELOG.md)
Documentation
User documentation for MAME 2003-Plus can be found in the libretro core documentation library.
Developer documentation can be found in the MAME 2003-Plus wiki.
Development chat
#programming channel of the libretro discord chat server.
Romsets and how to build them for this core
mame2003-plus was originally built from the MAME 0.78 codebase, meaning that 95% or more of MAME 0.78 romsets will work as-is in mame2003-plus, where they immediately benefit from its bugfixes and other improvements. In order to play the new games and games which received ROM updates in mame2003-plus, you will need to find or build the correct romsets.
Read more about rebuilding romsets in the libretro core documentation for mame2003-plus.