I used to be into the PS-One big time when it was out, and had many chats with the original "mod-chip" designers, and one of the first to release PIC HEX that anyone could flash (basically cracking at that time the very costly and protected commerical modchips) was a person by the name of "Old Crow" and when he retired he released alot of his source code, and back in Feb. 2008, I decided to re-write his original code to support the newer PIC chips.
Originally Posted by garyopa
After 10 years of the original modchip design for the PSX machines which used the older PIC 12C508, we came across a bunch of un-modded new PS-One machines, and since we had the old source code for the PSX modchip, and the original design used the PIC 12C508 chip, which is hard or costly to get these days, and there is tons of the newer 12F629 chips around these days due to the Wii-mod. We decided to release to the world, our quick and dirty recode of the old Classic 4-wire mod for the PSX using the 12C508 which was originally coded by the famous Old Crow (Scott Rider), and updated it to support the newer 12F629 chip. Included in this package is the our source code, plus a complied HEX file for programming the 12F629, and a bunch of install diagrams from various sources.
Attached is my port of the code, along with my old collection of wiring digrams. If anyone needs any help with these, just ask away!
ok, i have like 6 old ps1s laying around, if i where to use a chip, what chip should i get, and how much would it cost? also how do i flash the chip? i wire it to the comp? or? haha im a noob when it comes to hard mod. ive only hard moded my wii. so please any help would be cool. this sounds like a fun project =)
hmm, i cant really justify having to buy a programer for one chip haha. and im not very good wit hthe diagrams. haha.
do they sell chips pre coded? or should i just stick to the old swap trick ive been doing for years? i was thinking you could program them like you jtag a xbox 360. i could do something like that easily.
You might get an Old Crow if you have a PAL console, since games for it do not come with anti-modchip protection. Otherwise MM3 is really the way to go since it is a stealth modchip, even if it does require a few extra wires. For my console, it was 7 wires with one of them on a surface mount resistor and another on a capacitor. Not the easiest solder job, but well worth it in the end. Was tired of ruining my drive with disk swapping.
Hi Gary, I could benefit from your expertise here. I imported a Japanese SPCH-1000 (SN under 6 million) and wanted to put in an old school chip, but I can't find any installation diagrams that match the motherboard. The points seem to be in more or less the same place except for point 6 which has no points in the area above the chip. I can upload pics if need be. Do you have any advice?