Bugs on a ROM to BIN conversion

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By donluca

Expert (75)

donluca's picture

05-05-2020, 17:16

I think that there's a typo in your post: arkanoid.bin is 40E1H in size unless I've done something wrong.

Also, I noticed that it does not remove the "AB" characters at address 4000H after starting which means that on a reset the game will start again instead of going back to Basic.
I can fix this myself by zeroing out the AB characters at the start of the ROM of course, just wanted to point this out. Smile

By donluca

Expert (75)

donluca's picture

05-05-2020, 19:30

Alright, got everything working out, or so it seems.

I've read that, for example, Knightmare, has some kind of protection. I admit I haven't really played it to the end, just reached second level, but it looks like that everything is working alright. Does it freeze/corrupt later on?

By gdx

Enlighted (4642)

gdx's picture

07-05-2020, 15:31

Right, it's 40E1h. About protections take a look at the following links.

https://www.msx.org/wiki/Konami_game_protections
https://www.msx.org/forum/msx-talk/software/roller-ball-copy...

There are probably other threads.

By donluca

Expert (75)

donluca's picture

08-05-2020, 00:23

Thanks, the second thread is very intriguing, a very nice read.

Anyway, looks like I got this sorted out! Onto the next challenge, I guess. Tongue

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