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Author Topic: Can't find graphics in Kid Niki (compressed?)  (Read 887 times)

marioxb

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Can't find graphics in Kid Niki (compressed?)
« on: July 09, 2021, 06:15:49 am »
Hey there. I looked at the Japanese and US versions of Kid Niki for the NES and I can't find the graphics with YY-CHR. Can someone take a look and see if maybe they are compressed? Just seems strange, since both sequels graphics are right out there in plain sight.
« Last Edit: July 09, 2021, 06:57:53 am by marioxb »

FlashPV

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Re: Can't find graphics in Kid Niki (compressed?)
« Reply #1 on: July 09, 2021, 10:00:25 am »
Yes, it use some form of RLE, only "00" and "FF" octets are compressed if I recall correctly.
Ex: 000000000->0004, FFFFFF->FF03

marioxb

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Re: Can't find graphics in Kid Niki (compressed?)
« Reply #2 on: July 09, 2021, 09:13:36 pm »
Ah, ok. Thanks. Any idea how to uncompress?

Jorpho

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Re: Can't find graphics in Kid Niki (compressed?)
« Reply #3 on: July 10, 2021, 01:02:50 am »
If M. FlashPV is correct, you would probably want to write some sort of script in your least favorite programming language that reads out the data from the ROM and expands all byte pairs of the form 00xx and FFxx.
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marioxb

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Re: Can't find graphics in Kid Niki (compressed?)
« Reply #4 on: July 10, 2021, 10:39:28 am »
If M. FlashPV is correct, you would probably want to write some sort of script in your least favorite programming language that reads out the data from the ROM and expands all byte pairs of the form 00xx and FFxx.

Yeah, not really worth it for me to learn programming just to edit some graphics. Was hoping there was some sort of tool. Thanks though!
« Last Edit: July 10, 2021, 05:44:24 pm by marioxb »