Claude
ce9db6e3cc
- AY-8910 of the Triple Punch board (Triple Punch, Knock Out!!, Mariner,
800 Fathoms) at 18432000/12 = 1.536 MHz, as current MAME ("verified on
hardware"): the sound was 16.7% too high and too fast. Mariner keeps
GAME_IMPERFECT_SOUND: its discrete sound circuits are not emulated, in
current MAME either; 800 Fathoms gets the flag, as in MAME
- new clones from current MAME: triplepa, knockoutb, knockoutc, 800fatha
(names and manufacturers of the sets as in MAME)
- save states of the Galaxian/Scramble/Frogger hardware (rollback, RunAhead,
netplay diverged):
- Galaxian video: star scroll/blink state, star timer start, flip, graphics
banks, background and bullet colors, rockclim scroll; a postload restores
the tilemap flip, column scroll and tiles
- 7474 flip-flops (machine/7474.c), registered by TTL7474_config
- Scramble sound: the sound CPU RAM (scobra map) in the saved memory, the
AY port B timer computed from the sound CPU cycles as current MAME
(no state, no 32-bit overflow; same values)
- RC filters of the sound streams (streams.c) and the global sound enable
(mixer.c)
- Galaxian sound statics (LFO, noise, tone generator)
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01N3fzdsnzkQVtgYtYzqepjX
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.