Kind of surreal to see an SNK branded chip with a 2026 datecode
Furrtek
@furrtek.bsky.social
Virtual coyote obsessed with retro electronics reverse-engineering, theme park tech, music, and giant robots 💚. Likes the demoscene, SDR, urbex, pointy animals, graffiti, things on rails, North Korea. No AI bros, shills or posers, thanks. 🇫🇷/🇺🇸
NEO-PCM2 curiosity: MAME has pcm2_prot_device::swap which applies a XOR to decrypt the data of some games. Problem: I can't see a path for a XOR to be applied on data in the real chip. If SNK made different NEO-PCM2's to confuse pirates, they're bastards and I love them.
Freshly decapped and scanned NEO-PCM2: ADPCM ROM multiplexing and security used by late NeoGeo games. Hopefully will help fix inexact descrambling emulation. Fujitsu CG47 gate array from 1999 Kindly donated by @Rolel42
Mayan symbols in Nintendo MMC5 Possibly just a resistor to ground drawn by a layout artist who had one too many
More die scans Toaplan GP9001 siliconprawn.org/map/toaplan/... Data East 104 siliconprawn.org/map/data-eas... 1/3
New batch of dies scanned, it's been a while. First #X68000 stuff: BUDDHA, RESERVE, SICILIAN, VINAS1 and 2, all gate arrays siliconprawn.org/map/sharp/vi... siliconprawn.org/map/sharp/vi... siliconprawn.org/map/sharp/si... siliconprawn.org/map/sharp/re... siliconprawn.org/map/sharp/bu... 1/3
Neo CD SD Loader V2 final prototypes for CDZ, top and front loaders are finally validated
Thought I knew Fujitsu gate arrays well enough to not be bitten by such things, but I was wrong. Inputs can be inverting.
With @modernvintagegamer.com's video about Doom on the NeoGeo, I think it's a good time to share an old and very silly project related to putting gory stuff in a cartridge and using the console as a video pass-through: www.furrtek.org?a=superngpc In 🇫🇷 but any autotranslate works well enough
NEO-BUF replacements restocked, same price, now easier to install in ✨flex✨ lectronz.com/products/neo... Terrible picture:
#Disneyland Rúna toy: GeneralPlus it is. 145 speech files, 9 seem empty, longest is the sleeping/snoring sample. Exact format unknown, looks like a 4-bit ADPCM variant, not VOX or IMA. Full dump: furrtek.org/noclass/runa...
Some of the last NeoGeo chips made during the system's original run: NEO-YSA2 Yamaha FH1117 NEO-GRZ Fujitsu MB87L Both from 1998
Fusion NeoGeo MVS to AES converters restock www.furrtek.org/shop/
Furrtek Engineering shop
furrtek.org
2026 Fox McCloud announced to be featured in movie Still no Super FX FPGA prototype pictures >:|
If you need a Neo CD SD loader and can wait until june of this year, don't buy one from Aliexpress, you'll regret it.
Why 3D Artists need to be Mathematicians (on the N64) www.youtube.com/watch?v=kkfR...
Why 3D Artists need to be Mathematicians (on the N64)
YouTube video by Kaze Emanuar
youtube.com