Other PlayStation 1 modchip guides
A lot of modchips existed throughout the life of the PlayStation 1. Many of the older modchips aren’t very desirable today because they can be hard to find, and don’t always support things like anti modchip games. This guide covers many of those modchips, including hex code and installation diagrams. My goal is to preserve this information, and make it easier for people to identify, diagnose, and repair old modchip installations.
Note: This page is still a work in progress
Guide structure
This guide is structured into several pages. It’s organized like this primarily so that comments can be more organized and useful for readers.
This page is just an index that links off to the guide for each chip. The guides for each chip include information for all board revisions on a single page.
If you want more information about PlayStation 1 modchips in general check out this guide.
Other PlayStation 1 modchips list
This is a list of those other PlayStation 1 modchips. I’ve included links to guides for current modchips as well and marked them with bold for reference.
- Anti-Piracy Mod v5.08
- Chippin
- Classic 4 wire
- Mayumi v1.1
- Mayumi v2.1
- Mayumi v3
- Mayumi v4
- Mayumi v5.1
- Mod21
- ModAVR
- MultiMode 1.x
- MultiMode 2.x
- MultiMode 3
- Old Crow
- ONEchip
- PsNee
- PSone with Boot CD
- Stealth 2.4
- Stealth 2.8a
- Stealth chip for AT90S1200
Do you have a guide for the stealth 2.8a chip?
Hi, I came accross your website looking for infos on psx modchips and it looks like I found the right place! I wonder if you could clarify something for me. I own a modded SCPH-5502 , PAL, so PU-18 mb if I ‘m not mistaken. The modchip was already in place when it came in my possession so I am not sure which type it is. After inspection, it seems to be based on a PIC12C508 chip, with only 4 wires. It allows me to play my PAL backups. I also own a few NTSC games, and I have to… Read more »
A newer modchip won’t solve this problem. You’ll either need to do the oscillator mod, or use RGB cables instead of composite cables.
Thanks for your reply. I just bought some oscillators ( https://www.reichelt.de/quarzoszillator-4-433619-mhz-oszi-4-433619-p13708.html ) and will do the mod as described here :
, but the RGB cables seem to greatly increase the display quality, so I might try that as well…