Konami's Wai wai World 2 bootleg cartridge from 90s

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hacksquad
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Joined: Sat Mar 14, 2020 10:45 pm

Konami's Wai wai World 2 bootleg cartridge from 90s

Post by hacksquad »

Wai Wai World 2 Bootleg cartridge
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krzysiobal
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Re: Konami's Wai wai World 2 bootleg cartridge from 90s

Post by krzysiobal »

Hey, thank you!
DIL40 chip is VRC2 so all that logic is to add missing interrupt functionality and H/V/1scA/1scB mirroring.

IRQ counter register is latched during one write, not split into two 4bit nibbles. Also the mirroring reeg seems to be placed somewhere at $f000-$ffff, so the ROM must be a little modified in comparison to the original.

Image
pcb-top-tracks.jpg
http://krzysiobal.com/carts/?action=view&id=497
Last edited by krzysiobal on Mon Feb 20, 2023 3:02 pm, edited 1 time in total.
Image My website: http://krzysiobal.com | Image My NES/FC flashcart: http://krzysiocart.com
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jeffythedragonslayer
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Re: Konami's Wai wai World 2 bootleg cartridge from 90s

Post by jeffythedragonslayer »

I guess they are concerned driving over violent bumps would unseat the chips?
hacksquad
Posts: 20
Joined: Sat Mar 14, 2020 10:45 pm

Re: Konami's Wai wai World 2 bootleg cartridge from 90s

Post by hacksquad »

krzysiobal wrote: Sun Feb 19, 2023 11:48 am Hey, thank you!
DIL40 chip is VRC2 so all that logic is to add missing interrupt functionality and H/V/1scA/1scB mirroring.

IRQ counter register is latched during one write, not split into two 4bit nibbles. Also the mirroring reeg seems to be placed somewhere at $f000-$ffff, so the ROM must be a little modified in comparison to the original.

Image pcb-top-tracks.jpg

http://krzysiobal.com/carts/?action=view&id=497

Nice!! i have few more cartridges that has weird reverse engineered fc games, will be posting it soon...
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krzysiobal
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Re: Konami's Wai wai World 2 bootleg cartridge from 90s

Post by krzysiobal »

hacksquad wrote: Tue Feb 21, 2023 12:53 am Nice!! i have few more cartridges that has weird reverse engineered fc games, will be posting it soon...
Can you please check two things as I was not sure
1. Is there track going to pin 10?
guess1.jpg
2. Are pins 8 and 9 not connected to anything at all?
guess2.jpg
Image My website: http://krzysiobal.com | Image My NES/FC flashcart: http://krzysiocart.com
hacksquad
Posts: 20
Joined: Sat Mar 14, 2020 10:45 pm

Re: Konami's Wai wai World 2 bootleg cartridge from 90s

Post by hacksquad »

krzysiobal wrote: Tue Feb 21, 2023 2:16 am
hacksquad wrote: Tue Feb 21, 2023 12:53 am Nice!! i have few more cartridges that has weird reverse engineered fc games, will be posting it soon...
Can you please check two things as I was not sure
1. Is there track going to pin 10?
guess1.jpg

2. Are pins 8 and 9 not connected to anything at all?
guess2.jpg
Ok sure , i will check it out and update you by tomorrow
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