zanacandClaude
4125e63480
The cache and bus timing of every SH-3 data access (and of the instruction fetch sampled with it) was most of the time spent on ARM. Same output, cycle for cycle: - fast RAM regions found through a 64 KB page table - the time of the last bus access kept in 32 bits, relative to the start of the timeslice (exact up to 2^30 cycles, "far" beyond, where the timing only compares with small counts); the 64-bit value is still the one saved in the states - the tag of the most recently used way of each cache block kept next to it, rebuilt eagerly instead of checked on every access - the cycle count kept in locals across the fetch and data penalties - the timing fields at the start of the CPU state - the screen copy in at most two runs per line, with SSE2/NEON Claude-Session: https://claude.ai/code/session_01N3fzdsnzkQVtgYtYzqepjX Co-authored-by: Claude <[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.