0.81u7 2004/04/22 [#179 - David Haywood]
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New Games Supported or Promoted from GAME_NOT_WORKING Status
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Megaplay: Golden Axe 2 [Barry Rodewald, GreyRogue] (1)
Megaplay: Sonic the Hedgehog [Barry Rodewald, GreyRogue] (1)
Megaplay: Tecmo World Cup [Barry Rodewald, GreyRogue] (1)
Twin Eagle 2 [Olivier Galibert]

New Clones Supported or Promoted from GAME_NOT_WORKING Status
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Area 51 (R3000 Version) [Brian Troha] (2)
Ninja (clone of Sega Ninja) [Pierpaolo Prazzoli]

New Non-Working Games / Clones Supported
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Battle Balls (Asia)
Super Pang (Japan) (3)

Notes:
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(1): Megaplay still has a few issues (continue without extra coins etc.).
(2): Still needs speedup finding.
(3): Needs new decryption key.


Source changes:
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- Sound in the ST0016 driver [R.Belmont, Tomasz Slanina]: Neratte Chu & Renju Kizoku now have sound.
- Misc Cleanups [Lawrence Gold].
- Fixed a couple of issues with hard disks without checksums [smf].
- Dipswitch corrections for Karate Blazers, Turbo Force, Raiden 2 [Brian Troha].
- Megaplay Improvements [Barry Rodewald, GreyRogue].
- SPI / 386 updates [Ville Linde]:
  * Added the missing keys to E-Jan;
  * Added layer enable register;
  * Wrote a new i386 disassembler. Dasm386 wasn't always showing stuff correctly, and now the i386 core can be compiled without i86;
  * Preliminary Dallas DS2404 (RTC/CMOS) emulation;
  * Added 93C46 eeprom to RF2 single and RF2 2K. It's not hooked up though;
  * Improved i386/z80 interleaving. This should help with the small pauses;
  * Fixed some stuff in the i386 core. These don't seem to affect the SPI games, but should help with MESS.
- 386 Improvements [Nathan Woods]:
  * Adds a check enabled when MAME_DEBUG is defined that raises an error if the CPU core executed a negative cycle count;
  * Fixed a bug in i386_set_info() when changing the EIP register;
  * Fixed some compilation errors under non-GCC compilers;
  * Implemented ES, BOUND, DAA, DAS, AAS, INSB, INSW, OUTSB, OUTSW, LES, LDS, HLT, LSS, LFS, LGS, IMUL with a 32 bit adjustment.
- 386 Improvements [Ville Linde]:
	* Added DS and SS segment prefixes. Renamed fs,gs -> segment_FS, segment_GS;
	* Added INTO opcode;
	* Regression tested and fixed AAS opcode (incorrect behavior in Intel docs);
	* Added AAA opcode (with correct behavior);
	* Added AAD and AAM opcodes;
	* Added CMC opcode;
	* Added SETALC opcode which is undocumented;
	* removed a non-existing PUSH8 opcode from groupFE_8;
	* Regression tested and fixed SHLD and SHRD opcodes;
	* Fixed AF flag calculation;
	* Fixed AF flag in SUB and DEC opcodes.
- Beatorizer (bootleg) improvements [smf].