Pokemon Red - Progressively glitching the game (ASM hack)

Channel:
Spain Crystal_
Subscribers:
12,800
Published on ● Video Link: https://www.youtube.com/watch?v=mVTTXT_vxAc


Game:
Pokémon Red and Blue (1996)
Duration: 17:04
34,478 views
720

A lot of the game's data passes through the routine at 0xB5 when it needs to be moved between registers. But we can easily apply a small hack to this routine so that each byte of each "chunk" of data has a predetermined chance of being overwritten by a completely random number. Obviously, the higher the chance we make it be, the more glitched the game will look, but the randomness of the process makes it so fun and unpredictable!

HEX (insert this at address 00B5): CD 5C 3E FE XX* 38 07 CD 5C 3E 23 12 18 02 2A 12 13 0B 79 B0 20 EA C9
0x100 - 0xXX out of 0x100 bytes get glitched

ASM:

GlitchedCopyData: ; 00B5

call GenRandom ; call 3E5C (generates random 8-bit number in a)
cp XX ; 0x100 - 0xXX out of 0x100 bytes get glitched
jr c, dontGlitch

.glitchByte
call GenRandom
inc hl
ld (de),a
jr, doneGlitching

.dontGlitch
ldi a,(hl)
ld (de),a

.doneGlitching
inc de
dec bc
ld a,c
or a,b
jr nz,GlitchedCopyData
ret

If you enjoyed this video, you won't regret having a look at my Youtube channel for more! - https://www.youtube.com/user/CrystaL12RG



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Tags:
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Crystal_
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Other Statistics

Pokémon Red and Blue Statistics For Crystal_

At present, Crystal_ has 835,333 views spread across 43 videos for Pokémon Red and Blue, with his channel uploading 6 hours worth of Pokémon Red and Blue videos. This is 34.12% of the total watchable video on Crystal_'s YouTube channel.