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Robocop 2 missing levels?

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Monkeymist

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Not that I'd have a breeze where to start, but it would be great to unlock the missing levels in robocop 2.

These intro levels are in the Japanese version, but not any other version. However, according to this...

https://tcrf.net/RoboCop_2_(Arcade)

The levels actually exist on all hardware, they're just "hidden". Fully translated into English too.

Would it be possible to unlock these levels and have them playable on eprom, added back to original hardware?

Random gif for laughs

c4d98ff99ce6f568e90bbee624bfaba3.gif
 
I don't know anything about this game but you'll want to get really comfy with the MAME debugger

start by identifying the difference between the ROMs for different regions. hopefully it's just a region bit. If so then you can find wherever that bit is referenced and modify the code accordingly
 
twistedsymphony said:
I don't know anything about this game but you'll want to get really comfy with the MAME debugger

start by identifying the difference between the ROMs for different regions. hopefully it's just a region bit. If so then you can find wherever that bit is referenced and modify the code accordingly
Click to expand...
Unfortunately I know diddly squat about even using mame, never mind manipulating it :/
 
Pythagoras said:
Easy thing to do. Do you need it for US or Euro region...
?Robohack.jpg
Click to expand...
Wow, that was quick!

I'm a bit stupid when it comes to these things, but would you have it running in such a way that an eprom could be replaced on the motherboard?

Also, I'm not sure what version I have, I'll have a better look now...
 
I just made a quick patch for Mame but I can make a eprom hack too. Just check the region and version as they mention on The Cutting Room Floor...

"Hold 1P Start + 2P Start before the game boots to see this version info screen."
 
There it is. That's really great that you could get it running so quick :)

Unfortunately I don't have a burner yet, but this will be one of the first things I get done when it's in hand. Appreciate it man, I'm sure others will too!


20230423_224716.jpg
 
I have now made a patch for the 0.10 version and I got everything working. Adding the two extra stages, including the logo screen when stage 2 is finished, expanded attract mode to include stage 1 and enabled the level select. To make the attract mode like 0.11 was tricky ?( I had to do a lot of tracing with Mame's debugger and borrowing some code from 0.11

Now I started to make a patch for 0.11. It should be easier since I don't need to "borrow" any code from the other version like I had to with 0.10 . Just change a few bytes here and there and copy the English text from 0.10... (I hope :whistling:)
 
Ok, the current plan will be to release an English patch of Robocop 0.11. Are there any more than the "translation" that you have in mind? Are there any bugs in the game??

"Speak now or forever hold your peace"... I might add some ideas myself but not sure, yet.... :whistling:?(
 
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Brilliant :)

I've still to get the burner sorted (and thanks to mitsu I have an m72 kit to burn too), but all I was after was the missing levels.

If you have any mad ideas, go for it. Get a terminator model in there to finally have Robocop v Terminator :p
 
Don't worry. My ideas are not that mad:P

I found out something useful about Dip Sw 1:8 (Marked as unused in Mame). This dipswitch is for some strange coin setting.
When the dipsw is on it changes some text and graphics from "Credit" to "Coin".
It will also ignore the coin settings for "Coin A" and "Coin B". The settings will be forced to 2 coins 1 credit.

But That pointless settings did it much easier to patch it to something more usefull...

robo.jpg
 
Following...
I have a Robocop2 pcb and a burner.
It would be interesting to add this patch and test it on a real board of the game
 
The patch work is still in progress, I plan to use the coin setting switches for free play so I can use Switch 1:8 for something else later. But you can help me with a "beta" test later on. After I have fixed a few more things.
 
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I was thinking about something... If I add a "trainer". Would that ruin the game? I need to make a trainer anyway so I can play the game to the end and make sure that all patches work as expected.

What are you thinking about the subject, would a trainer take away the fun and the challenge of the game?
Let's Cast a wote. Trainer Yes:thumbup:, or No.:thumbdown:
 
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