* Space Humour? : When you start a new game and after the RESCUE THE EARTH FROM THE COMETS ! message appears, you can move your ship over it. The text will get erased, and the following message will appear over it : DO NOT ERASE.

* Level Boss Trick : Shoot all but one of these squares and then press the hyperspace button (the smart-bomb) when the final square is lit. You should now receive 1000000 points! (this works for all level bosses).

* Another Tip : When the game is in Game Over mode, you can actually control the ship at one point. This is rather useless, but fun!

0.66 [Jarek Burczynski, Phil Stroffolino, Acho A. Tang]
0.61 [Jarek Burczynski, Nicola Salmoria, Phil Stroffolino]

Bugs:
- halley87, halleysc, halleycj: Priority glitch between hiscore text and background. Kold666 (ID 03594)
- halley87, halleysc, halleycj: Sound support incomplete. Kold666 (ID 03595)

WIP:
- 0.142u4: Angelo Salese removed deprecat.h usage in the Halleys driver.
- 0.136u1: Corrado Tomaselli verified and corrected clocks in Halley's Comet. Changed VSync to 59.5 Hz.
- 0.131u2: Fabio Priuli fixed Halley's Comet sound: AY8910 write handlers work on two bytes.
- 0.131u1: MooglyGuy merged memory maps in the Halleys driver.
- 0.128u3: Stephane Humbert fixed dipswitches for all Halley games. Added DIP locations for 'halleys' and clones. Added dipswitches 'Operation Data Recorder', 'Infinite Lives (Cheat)', 'Coin Slots' and 9x 'Unused'.
- 0.122u1: Corrado Tomaselli verified some CPU clocks of original boards using a frequency counter, changed Halley Comet main CPU clock to 1.664MHz (it's not a mistake, the clock is very low).
- 20th September 2006: Dumping Project - Purchased Halley's Comet '87 (Taito, very Rare). Thank go to the fivepeople who recently donated after the last request. A special thanks goes to Kevin.
- 0.108u1: Brian Troha fixed collision detection in clone Halley's Comet '87.
- 0.108: Added clone Halley's Comet '87. Changed description of clones '(Japan set 1)' to 'Halley's Comet (Japan, Newer)' and '(Japan set 2)' to 'Halley's Comet (Japan, Older)'.
- 0.72u1: Misc improvements, cleanups and fixes to the Halleys driver [Acho A. Tang]. Changed palettesize to 1536 colors.
- 12th August 2003: Acho A. Tang re-submitted Halley's Comet collision detection.
- 13th March 2003: Acho A. Tang added better collision detection to the Halley's Comet driver.
- 0.66: Added Halley's Comet (US) (Taito 1986) and clones (Japan set 1) and (Japan set 2).
- 9th March 2003: Acho A. Tang submitted major improvements to the Halley's Comet and Ben Bero Beh driver, they are almost perfect now.
- 12th January 2003: Phil Stroffolino sent in an updated Halley's Comet driver that is pretty close to playable, but some blitter problems still remain.
- 4th September 2002: Phil Stroffolino sent in an update to the Halley's Comet driver. The title screen works but it crashes after a few seconds into the game, and the graphics emulation is missing a lot of things.
- 0.61: Added (Testdrivers) Halley's Comet (set 1) and clones (set 2) and (Japan).
- 24th June 2002: Jarek Burczynski added sound to Halley's Comet, but it isn't otherwise improved.
- 8th June 2002: Phil Stroffolino sent in another small update to Halley's Comet.
- 7th June 2002: Phil Stroffolino sent in a preliminary Halley's Comet driver that works up to the test mode.
- 19th May 2002: Nicola Salmoria cleaned up the bare bones Halley's Comet driver, but did not progress any further.
- 7th May 2002: Jarek Burczynski decoded the program code in Halley's Comet but the driver doesn't do anything else yet.
- 1st November 2001: Neurokinetik dumped Halley's Comet (US).
- 4th February 2000: Gansuke from Team Japump dumped Halley's Comet (Japan, Older).
- 22nd February 1999: Tormod Tjaberg dumped Halley's Comet (Japan, Older) and (Japan, Newer). Board supplied by Andie.

LEVELS: 30 (endless)

Romset: 209 kb / 17 files / 106.9 zip