List of changes to MAME core

[Robert]

There's been a couple of requests for a list of changes to the MAME core that enable MAMEUI etc to run. Also, I had never kept a list and it's got me into trouble when things stop working. So here they are. Line numbers are approximate.

NES

src/devices/bus/nes/nes_ines.hxx

line 587: If an unsupported ines mapper was found, MAME would abort. This is changed to give a message and not crash.

line 687: If an unknown pcb is found, print a message and continue.

line 1258: same

src/devices/bus/nes/nes_slot.cpp

line 823: return blank if invalid, instead of crashing

src/devices/bus/nes/nes_unif.hxx

line 184: if unknown UNIF board encountered, MAME will crash. We show an error and continue.

[Robert]

FLOPPY SOUNDS

src/devices/imagedev/floppy.cpp

line 215: default floppy sounds to on, unless a driver specifies it should be off (none do)

line 275: same

[Robert]

OPTIONS

src/frontend/mame/mameopts.h

line 62: added an extra method to allow different processing for parents vs clones. This is to prevent clones inheriting the parent's saved slots and software and sometimes crashing as a result.

src/frontend/mame/mameopts.cpp

lines 101-105: check to see if it's a parent or a clone

lines 217-247: the code of the new method

src/lib/util/options.h

line 193: another pointer for parents (is it a left-over?)

[Robert]

SNES

src/mame/drivers/snes.cpp

line 1186: if a snes cart required the bsmempak or the strom to be loaded, it would crash. Modified so that won't happen.

 

src/device/bus/snes/snes_slot.h

line 266: allow smc as a valid extension (same as sfc)

src/device/bus/snes/snes_slot.cpp

line 266: if a cart couldn't be loaded, say so instead of silently failing.

[Robert]

A2600

2022-04-27 removed this hack.

[Robert]

UNSUPPORTED SWLIST ITEMS

src/emu/diimage.cpp

line 642,644: modified the messages so they don't show in MESSUI/MAMEUI. Need to find out if this can be reversed.

[Robert]

CDROM HANDLING

src/lib/util/cdrom.cpp

line 2316-2320, 2444: if your cue sheet contains unsupported sounds, such as MP3, MAME will reject the CD with "unspecified error". MESSUI/MAMEUI will instead play the disk, but without sound. The remainder of the items in the cue sheet will not be processed.

[Robert]

MOUSE CAPTURE

src/osd/windows/window.cpp

line 668: MAME can grab your mouse and not let it stray outside the window. The pointer might disappear as well. This is not how a well-behaved windows program should work. The line has been commented out. If you want to keep the mouse in the game, run full-screen instead of in a window.

[Robert]

LUA STARTUP

src/frontend/mame/luaengine.cpp

line 462, 540, 922, 927, 933: If LUA is unable to initialise itself, MAME will crash. This has been changed so that LUA will be disabled and the emulator will run without it.

[Robert]

PLUGINS

src/frontend/mame/mame.cpp

line 174,184,195: If there's a problem with a plugin, MAME will crash. This has been changed so you get a console message and things continue without it instead.

src/frontend/mame/pluginopts.cpp

line 77,83: don't crash if bad plugin.

[Robert]

DEBUGGER

src/emu/debug/dvmemory.cpp

line 340,397: in the ascii part of the memory view, bit 7 will be stripped, so you can read text that has bit 7 on, instead of getting greek or whatever.