Gaplus Cheat? Does it work?

[DeLuSioNaL29]

OK, updated the rest of the chart to include the "blood type" in the initials hi score entry. Basic rule of thumb is the Gaplus versions are the only ones that have it (minus the ones noted that don't). Seems they stripped it in the Galaga 3 upgrade for all versions.

Also, I noticed that I could get the Hypership to work in the version that don't work with the cheat enabled. Not sure why it allows it. Maybe it was in the code all along but just cannot be activated? Or maybe activated in a different way? I added a footnote at the bottom of the chart.

Del

 

[channelmanic]

OK, so I finally have the MAME info. I basically ran MAME (ver. 0.169 and ver.0.221) and played each one to see if the Upgraded Ship easter egg worked or not. I can update this chart as needed if there are any other versions I missed from future MAME builds).

Now you have the GP7 dump that's coming in the next release of MAME, please let me know how it plays.

 

[mgkastra]

My board. Roms are not in romident, has hypership, but only three initials and no blood type.

Namco Board with a German licensed sticker. Shows May 1984 on the sticker.

 

[KaBoom1701]

I've been looking for a board with the right rom set that you can get a hyper ship on. So far no luck. Glad you found one. Want to sell it? Lol

My board. Roms are not in romident, has hypership, but only three initials and no blood type.

Namco Board with a German licensed sticker. Shows May 1984 on the sticker.

View attachment 637132View attachment 637131

 

[mgkastra]

I've been looking for a board with the right rom set that you can get a hyper ship on. So far no luck. Glad you found one. Want to sell it? Lol

Haha, it's not for sale. It took me a while to find one. I knew I wanted a Namco single stack pcb. I didn't even know about secrets or blood types when I got it. Found out when I tried to do the cheats, ahha.

 

[david757]

OK, so I finally have the MAME info. I basically ran MAME (ver. 0.169 and ver.0.221) and played each one to see if the Upgraded Ship easter egg worked or not. I can update this chart as needed if there are any other versions I missed from future MAME builds).

Del

Filename:	Description:	Hypership Easter Egg?	Extended Initials entry (blood type)
gaplus	Gaplus (GP2 rev. B)	Yes	Yes
gaplusa	Gaplus (GP2)	Yes	Yes
gaplusd	Gaplus (GP2 rev. D, alternate hardware)	Yes	Yes
gaplust	Gaplus (Tecfri PCB)	No **	No
galaga3	Galaga 3 (GP3 rev. D)	Yes	No
galaga3a	Galaga 3 (GP3 rev. C	Yes	No
galaga3b	Galaga 3 (GP3)	Yes	No
galaga3c	Galaga 3 (Set 4)	No **	No
galaga3m	Galaga 3 (Set 5)	No **	No
(Reserved)	(Reserved)	(Reserved)

** Unless Hypership is enabled in MAME cheat menu. Seems to work in ANY version of the ROM with the cheat. (MAME only)

The Tecfri board Gaplus with no high score blood field does indeed have both cheats, the hypership cheat and the flag extra ship cheat. It just that the rules about which bugs to shoot or crash into are different. For example on parsec 1 make sure your score is zero then the bug to shoot goes to the second row from the bottom and second bug from the left. It is a tough shoot and best done when the forth wave swoops in. Look at the train of bugs swooping in the right half of the screen and shoot only the last bug, which is the fourth bug in that train. then the red flag will appear. Works on real hardware and in MAME. On parsec 2 if your score is 6600 then shoot the first bug on the bottom row. After you do that, then shoot the queen bug when it dives down then the flag will appear. If your score is 6700 then shoot the second bug. If your score is 6800 then shoot the third bug. As for the hypership, I do not know which bug you need to crash into but it does get offered if you crash and get lucky.

 

[KaBoom1701]

Nice find.

I would really like to how how to trigger the hyper ship as this dramatically changes the gameplay in your favor.

 

[DeLuSioNaL29]

+1 Good find. Now I'm wondering which version of Galaga 3 a 60 in 1 PCB has (technically some sort of MAME build is used). I've never been able to trigger is using the known methods. This new method may work. Worth a try.

Del

 

[KaBoom1701]

I even went as far to purchase the original Japanese book that explains how to trigger the extra ships based on your score. Anyone speak Japanese? Lol

 

[Glitch]

Google Translate

 

[david757]

If you do have the chart, then this method works too. For player 1, take the thousands digit and the hundreds digit as a two digit hex string. Add the parsec number minus 1. Then logic AND the result with 0x1F. Look at the result converted from hex to decimal as a two digit decimal string. The first digit is the row number (zero based) from the bottom. The second digit is the position (zero based) from the left. Note that row 4 is indented by one column such that the first position is column 2.

Remember to use the score after you finishing shooting.

Example not using the chart with a score of 676600 parsec 35
The two digits as hex is 0x66. Parsec 35 is hex 0x23, minus 1 is 0x22. Take 0x66 plus 0x22 is 0x88. Logic AND with 0x1F is 0x08. Convert to base ten is 08. The "0" means first row. The "8" means the ninth bug along from the left.

See here

Tecfri is vaguely similar except the row is higher by one row, rotating from row 4 back to row 1 plus a left or right offset if row 4 was referenced because row 4 has two less bugs.

 

[KaBoom1701]

Finally got some time to swap my Namco PCB I got from @SCUBA King from the Midway one. First game went well and I made it further than most games. I was able to trigger the hyper ship buy shooting the 4th bug on the right side in the 2nd wave. Then crash into the queen bug carrying your special weapon. Then all ships convert to the hyper ship the rest of the game. Saw some bugs I've never seen before. They start using the bonus stage bugs in the regular parsecs. Lol

 

[DeLuSioNaL29]

Anyone figure out where this is in the Galaga 3 on the 60 in 1? It's always bugged me (no pun intended) that I could never get the Supership in that version of the game.

Del