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As for the MAME, is also now available for MESS the dat file that allows you to follow version after version, all changes and additions made to the all various systems emulated.
If you find any inaccuracies or typographical errors please let me know by sending an e-mail to this address:
messinfo.dat@gmail.com.
The file is also and above all to give credit to all people who conceived and carried out this wonderful project.

Important
: Since version 0.166 the file should be placed in the "/Dats" folder.

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download messinfo.dat

New in MESSInfo:
0.258: ====== - a2scsi: Added audio routing for the CD-ROM. Also moved Mac CD drives to SCSI ID 3 to match tradition [R. Belmont]. - advision: Add configurable screen size [hap]. - am7990: rmd3 mcnt is 0 on error [Patrick Mackinlay]. - apple2com: Display bank number in system calls [Peter Ferrie]. - apple3.cpp: Added support for two-speed keyboard auto-repeat. apple/apple3_m.cpp: Trigger reset/NMI when reset key combinations are pressed. Improved reset/NMI key combination handling. apple/apple3_v.cpp: Added support for flashing characters and removed smoothscr from text modes [Rob Justice]. - asc: Remove debug message [R. Belmont]. - at.cpp: Added a number of BIOS dumps [rfka01]. QA (& mostly demote) riki coverdisk entries, normalize contents node in 'ibm5170.xml' [Angelo Salese]. - cp1: Changed description to 'CP1 / Computer-Praxis'. - cuda: Changed description to 'Apple Cuda v2.xx ADB/I2C'. - cxhumax.cpp: Remove debugging cruft [AJR]. - ega: Fix colors [cracyc]. - egret: Changed description to 'Apple Egret ADB/I2C'. - elecdet: Add labels and button to internal artwork. Small correction to internal artwork, misc: correct seatongrove company strings [hap]. - h8.cpp: Fixed frequencies for 2ámillisecond interrupt and speaker [Mark Garlanger]. - h89.cpp: Replaced bad ROM dumps, and added MMSá84B ROM. Commented out unused DIP switches. Cleaned up signal line handlers [Mark Garlanger]. - hd63705z0: Changed description to 'Hitachi HD63705Z0'. - indigo_r4400: Changed manufacturer to 'Silicon Graphics'. - intchess: Add 16*16 gfxlayout [hap]. - iosb: Changed description to 'Apple IOSB I/O ASIC'. Correct ASC IRQ polarity, fixes lockup during sound playback on macquadra800.cpp machines. devices/sound/asc.cpp: Fix half-full flag for all variants and add IRQ gate for Sonora/Aardbeg, gives smooth playback on all chip variants. Added support for the PrimeTime II I/O ASIC. Add support for the PrimeTime variant [R. Belmont]. - ip12.cpp: Driver (indigo.cpp) splitted to (ip20.cpp) and (ip12.cpp). Refactor and WIP. Added int2 and pic1 devices. Refactor hpc1 device, add ethernet support. Refactor 4dpi into ip6 and ip12 variants. Refactor indigo into ip12 and ip20 variants. Rework 4dpi3x based on hpc1, int2 and pic1. ip6 and ip12 mostly working (will run irix 4.0.5 and 5.3 except for graphics issues and missing audio) [Patrick Mackinlay]. - ip20.cpp: Driver (indigo.cpp) splitted to (ip20.cpp) and (ip12.cpp). Enable memory configuration. Add a minimal nvram dump to set eaddr and netaddr. Correct interrupt mappings [Patrick Mackinlay]. - ip6.cpp: Minor refactoring and housekeeping. Added configurable ram size and parity. Refactor and WIP. Added int2 and pic1 devices. Refactor hpc1 device, add ethernet support. Refactor 4dpi into ip6 and ip12 variants. Refactor indigo into ip12 and ip20 variants. Rework 4dpi3x based on hpc1, int2 and pic1. ip6 and ip12 mostly working (will run irix 4.0.5 and 5.3 except for graphics issues and missing audio) [Patrick Mackinlay]. - isa_sblaster_16, isa_sblaster1_0, isa_sblaster1_5: Implemented 8-bit DMA continue command [Angelo Salese]. - k051649: Add note about bus conflicts [hap]. - kloneran: Changed description to 'The Lone Ranger (handheld)'. - m6502: Don't detect edge triggered inputs before the first clockcycle. Don't clear input pins external state at device_reset. Add 6503 CPU [hap]. - m6504, m6507: Change logaddr width [hap]. - m6800: Use manufacturer's syntax for disassembling indexed addressing modes [AJR]. - m6809: Zerofill more variables at device start, 6840ptm: clear output ports at reset [hap]. - maclc3.cpp: Cleanup of repeated ROM definitions [R. Belmont]. - macquadra700.cpp: Add serial ports for consistency with other Macs [R. Belmont]. - macquadra800.cpp: Add floppy software lists [AJR]. - mc68681: Idle tx lines after transmitter reset [Patrick Mackinlay]. - mga2064w: Changed description to 'Matrox Millennium "IS-STORM / MGA-2064W"'. Revisit and complete drawing log. Basic drawing log. Add mgabase1 accessing alias, identify RAMDAC. Add base infrastructure [Angelo Salese]. - mos6532: Changed description to 'MOS 6532 RIOT' [hap]. - msx1.cpp: Remove illegal char from howdumbl filename in 'msx1_cart.xml' [hap]. Improved publisher metadata for some homebrew/doujin software in 'msx1_cart.xml' [Wilbert Pol]. - n64.cpp: Corrected title for (razmoket) in 'n64.xml' [ArcadeShadow]. - pc.cpp: Added a number of BIOS dumps [rfka01]. - pc9801: Fix scroll and apply reverse attribute after blink [cracyc]. - pi4d20, pi4d25, pi4d30, pi4d35: Changed manufacturer to 'Silicon Graphics'. - ptm6840: Zerofill more variables at device start, 6840ptm: clear output ports at reset [hap]. - r4000: Intention is no longer a mask [Patrick Mackinlay]. - s3virge: Add DPSDxax ROP, fix regression with Win98SE 256 colors [Angelo Salese]. - scorpion.cpp: Added Scorpion GMX [holub]. - sp0250: Make drq_r return an int instead of u8 [hap]. - sprinter.cpp: Improved interrupt timing and cleaned up code. Added internal layout with Turbo, NeoGS and floppy drive indicators [holub]. - tdracula: Small tweak to SVG [hap]. - ti99_2.cpp: Include new firmware (DSR) for TIPI. Fixed uninitialized member in HX5102 [Michael Zapf]. - xavix: Remove NBSP char from comment section [hap]. - z80scc_channel: Channel reset empties fifos [Patrick Mackinlay]. - Renamed (hd63705) to (hd63705z0), (macdafb_memc) to (macdafb_djmemc) and (mos6532_new) to (mos6532) devices. - Renamed (indigo4k) to (indigo_r4400), (4d20) to (pi4d20), (4d25) to (pi4d25), (4d30) to (pi4d30) and (4d35) to (pi4d35) machines. - Renamed (4dpi.cpp) to (ip6.cpp) driver. - AJR added Hitachi HD6305V0 and Hitachi HD6305Y2 devices. - Angelo Salese added Matrox MGA2064W VGA device. - Mark Garlanger added Heath Interrupt Socket, Heath Terminal Logic board connector abstraction and Heath Terminal Logic Board plus Northwest Digital Systems GP-19 devices. - Patrick Mackinlay added SGI CTL1, SGI INT2 and SGI PIC1 devices. - R. Belmont added Apple Cuda Lite ADB+I2C+PS/2, Apple Cuda v3.02 ADB/I2C, Apple DAFB II video (MEMCjr integrated), Apple F108 memory controller, Apple MEMCjr memory controller, Apple PrimeTime I/O ASIC, Apple PrimeTime II I/O ASIC and Apple Valkyrie video devices. - Wilbert Pol added MSX Cartridge - Matra Compilation device. - AJR added skeleton/antonelli_hd6305.cpp driver. - Patrick Mackinlay added sgi/ip4.cpp driver. - R. Belmont added apple/macquadra630.cpp and apple/macquadra605.cpp drivers. - CJ, System Source Computer Museum added Silicon Graphics Professional IRIS 4D/50 system. - hap, algestam, Sean Riddle, Mr. Do added Konami Teenage Mutant Ninja Turtles II: Splinter Speaks (handheld) system. - hap, Sean Riddle added Ideal Toy Corporation Sky-Writer: The Electronic Message Sender system. - holub added Ltd. Scorpion GMX, Scorpion system. - Jo22 added Olivetti M250E system. - KykyPyky LEVKA_8 added LG Digital ez LG system. - Patrick Mackinlay added Silicon Graphics IRIS Indigo R4000 and Silicon Graphics IRIS Indigo systems. - R. Belmont added Apple Computer Macintosh LC/Performa 475, Apple Computer Macintosh LC/Performa 575, Apple Computer Macintosh LC/Performa 580, Apple Computer Macintosh Quadra 605 and Apple Computer Macintosh Quadra 630 systems. - unknown added Antonelli 2495 and Antonelli 2614 systems.

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