I'm trying to install the mod chip psnee on the ATtiny85 chip but it doesn't work, I can't make the ps1 detect the backup discs My laser is in perfect condition but there is something wrong with the sketch I can't find a step by step tutorial to record it. I have the arduino options as isp, attiny85...

Shadow wrote: ↑October 12th, 2020, 12:53 pm The HC05 will still be locked to Japan. You'll need a modchip.

I would like to know where the HC-05 is located. I have an other american donor ps1 for parts.
I could get the part I need from him.

Hello friends. Currently I bought a PS1 region Japanese model SCPH5000 and I read that to play ntsc u / c games you had to replace the bios. Today I received my 29f040b chips and proceeded to burn the original SCPH-7001 US bios. on the ps1 SCPH-5000 J I already installed it on the motherboard and th...

I see.
I was looking and here in my country and I did not find the 28f400, I found the 29f400, according to the pinout is the same, can I use this or will I have to order a 28f400 from aliexpress?

I can't find the 27v400.
I found the 27c400 and the pinout seems to be the same.
Could that work?

Thank you very much

OK thank you very much.
Personally I would like a bios of the 7xxx or 9xxx series, I suppose it should work right?
For the programming on the chip I only have to download the bios in the .bin format and enter it like this without modifying any line?
Thank you very much again

Hello friends, I'm from Mexico. I currently have my ps1 mod scph 9001 and it works great. But I have always wanted a ps1 model scph 1000, I am about to buy one but I know that the bios will be Japanese and if I want to play with u / c games I must replace the bios. Here in Mexico the scph 1001 model...