Yeah that HG code works wonders for Klonoa 2, and I just found out it also works with a lot of Simple 2000 games
[attachment=38960] [attachment=38961]
I updated the main post with a small list. Sadly a good bit of Simple 2000 games don't work with PCSX2 and I can't test on my PS2 (many miles away) so that list isn't comprehensive.
For anyone interested here's a WIP patch for King of Fighters Maximum Impact (tested on MI Maniax, MI2, and MI2 Regulation A)
Code:
zoom
C0010000 ABAAAA3F 00006042 00000000
to
C0010000 388EE33F 00006042 00000000
vert
E0FFBD27 803F013C 00008144 1000B07F
to
E0FFBD27 403F013C 00008144 1000B07F
As you can see in screens below the vert value messes up the HUD in MI. Also, MI2 needs render fix. Fixing MI HUD may simply be impossible, and I couldn't find render value in MI2 (tried variations of 512 and 640), so I'm giving up for now
[attachment=38962] [attachment=38963]
MI Maniax broken HUD | MI2 missing graphics
UPDATE:
Found some pretty interesting KOF cheats
here.
In particular this one, which completely disables the HUD:
20386D5C 100006AE (RAW)
286DDC: AE066010 > AE060010 (ELF)
[attachment=38977] [attachment=38978]
Maybe there's something of interest around that area in the ELF. If anyone wants they can take a closer look