Catalogue of Arcade Emulation Software - the Absolute Reference

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0.33b3 [Mirko Buffoni, Thierry Lescot, Nao, Marco Cassili]


- tturf and tturfu have some invalid data written to the UPD7759. I think this causes the 'pop' sound when level 1 starts.

- tturfbl has some serious problems with tilemap scrolling

- bayroute has a bad sprite in the door of the level 1 boss

- altbeast writes to mirrored sprite RAM at $441000

- tturfu has bad single sprite frame when main character walks

- dduxbl has some 'stuck' sprites


- toryumon RAM test accesses mirrored work RAM. Maybe there's a better way to support this than using AM_MASK.

- I separated the fpoint and fpointbl,fpointbj machine drivers as the latter two have different sound hardware, but the original does not. I think this creates a dependancy where needs flpoint.001 from, as fpointbl uses fpoint ROMs (it's parent), it's own, and the sound ROM from fpointbj. So add fpoint.001 to for it to work. I made fpointbl the parent of fpointbj so it would use the proper memory map for the sound hardware.


- Better abstraction of tilemap hardware is needed; a lot of this mess could and should be consolidated further

- Many games have ROM patches - why? let's emulate protection when possible

- Several games fail their RAM self-test because of hacks in the drivers

- Many registers are suspiciously plucked from working RAM

- Several games have nvram according to the self test, but we aren't yet saving it

- Many games suffer from sys16_refreshenable register not being mapped

- Road-rendering routines need to be cleaned up or at least better described

- Logical sprite height computation isn't quite right - garbage pixels are drawn

- Screen orientation support for sprite drawing

- Sprite drawing is unoptimized

- End-of-sprite marker support will fix some glitches

- Shadow and partial shadow sprite support

- To achieve sprite-tilemap orthogonality we must draw sprites from front to back; this will also allow us to avoid processing the same shadowed pixel twice.


- 0.111u2: Mamesick fixed several bugs in the old System 16 bootleg code.

- 0.88u7: Splitted system16.c into segas16a.c and system16.c

- 0.88u6: Aaron Giles improved the video, Cotton title screen looks better but game currently suffers from other issues.

- 0.88u5: Splitted system16.c into segas16b.c and system16.c

- 16th November 2004: Aaron Giles - Made some improvements to the Sega drivers, including support for the Dynamic Memory Maps and some video fixes, Cotton looks a bit better in some ways now.

- 0.88u5: Aaron Giles updated the System 16 driver. Some bits better, some bits worse for now.

- 0.88u1: Changed palettesize to 8192 colors in some games.

- 0.88: Adjust System16 FM/ADPCM balance (thanks to Mame32Plus).

- 0.87u3: Olivier Galibert added some hooks to C 68k core in preparation for Sega decryption updates.

- 15th March 2004: Charles MacDonald made various fixes to riotcity, aurail, altbeast and bayroute. Added missing coin control to sys16_coinctrl_w. Removed 'extra' RAM in some drivers and replaced with sys16_tilebank_w.

- 0.75: Changed Z80 CPU2 clock speed to 4MHz.

- 0.74u2: Changed YM2151 clock speed to 4MHz.

- 0.72u1: Acho A. Tang made temporary fixes to a few of the System 16 driver problems (sound banking for example) Note, the driver is still being rewritten these are only minor 'fixes' to improve things a bit until the rewrite is complete.

- 9th February 2003: Acho A. Tang fixed various problems in the uPD7759 sound chip emulation, including a crash in the System16 driver and missing and/or incorrect sounds in TMNT, P.O.W. and '88 Games.

- 22nd January 2003: Acho A. Tang submitted another few fixes to the Sega System 16 driver.

- 21st January 2003: Acho A. Tang fixed some bugs in the Sega System 16 driver.

- 10th July 2002: Bryan McPhail fixed some small bugs in the System 16 driver.

- 0.61: Changed palettesize from 2048 to 4096 colors.

- 7th May 2002: Bryan McPhail fixed a few bugs in the Sega System 16 driver and added the shadows back to Outrun and others.

- 1st August 2001: Olivier Galibert reported some progress with the System 16 driver rewrite.

- 3rd December 2000: Phil Stroffolino sent in a System16 driver update with several bugfixes and cleanups.

- 0.37b9: Changed palettesize from 4096 to 2048 colors.

- 10th October 2000: Phil Stroffolino sent in a Sega System16 update and added After Burner and After Burner II support thanks to Dave.

- 17th February 2000: Andrew Prime fixed SegaPCM sound in the System16 drivers.

- 31st January 2000: Andrew Prime added Toryumon to the System16 driver and cleaned it up a bit.

- 0.36b15: Andrew Prime fixed System 16 games in 16-bit video modes. With -depth 16, shadows are also color accurate, otherwise the old gray scale shadows are used.

- 16th August 1999: Andrew Prime sent in a nice System 16 update with Enduro Racer support and Outrun graphics problems fixed.

- 0.36b2: Hiromitsu Shioya added Sega PCM and RFC68 sound emulators, used by System 16. Andrew Prime fixes the System 16 games and most games have sound now.

- 3rd August 1999: Andrew Prime sent in a huge System 16 driver update, with Hang-On graphics fixed and working drivers for Bay Route, Outrun, Space Harrier and Super Hang-On. Big thanks go out to Thierry Lescot and Nao for freeing S16AE sources.

- 0.36b1: Andrew Prime major improve the System 16 driver, most games are working now. Many still lack sound though. Phil Stroffolino added a new sprite manager, used in System 16, Ninja Gaiden, Shoot Out and Blood Bros.

- 5th May 1999: Marco Cassili fixed some dips in the System 16 drivers.

- 31st March 1999: Phil Stroffolino fixed the sprites of Passing Shot.

- 0.35b9: Phil Stroffolino converted the System 16 drivers to use the TileMap system - they are now cleaner, faster, and support screen rotation.

- 0.35b2: Howie Cohen support uPD7759 sound in Golden Axe, Shinobi, Passshtb, Alien Syndrome, Altered Beast and others.

- 0.34b4: Removed altbeast.c, goldnaxe.c and shinobi.c driver. Phil Stroffolino support sound in all of the working System 16 games. Added Z80 (4096000 Hz) CPU2 and YM-2151 (4096000 Hz) sound.

- 0.34b3: Merged altbeast.c, goldnaxe.c and shinobi.c to system16.c driver. Phil Stroffolino improved the System 16 drivers.

- 0.33b7: Aaron Giles added dynamic palette to the System 16 games.

- 0.33b4: Phil Stroffolino made some fixes to the System 16 games.

- 0.33b3: Added altbeast.c, goldnaxe.c and shinobi.c driver.