It's a usb serial thing. Will I be able to do any useful debugging with that? I read that you only have an attiny45. Maybe I could send you some useful information. I have no problem programming using arduino as isp. Maybe https://github.com/micronucleus/micronucleus could be useful so you can burn ...

Hi, tomorrow my ftdi usb programmer is coming. Will i be able to do any useful testing with it and my attiny85?

Hi, I tested on attiny85 at 8mhz working fine. Should I put my ps1 back together yet?

Hi could part of the problem be that we need to calibrate the oscillator on the attiny? +-10% means there could be 20% difference between yours and mine. I read somewhere that it can be important to use serial. i found this page about it
http://www.instructables.com/id/ATtiny- ... libration/

Hi, I just tested on attiny85 it works at 16mhz but not at 8mhz for me.

Nice that you got it working :) ATtiny: Just booted the first game here. These chips are hell to work with! Without Serial, the essential chip code just barely fits on an ATtiny45. The problem is far too little RAM.. Yep It's not fun but it will be nice to have a tiny chip in the psx when it's read...

⸮⸮⸮``⸮⸮⸮ ⸮⸮⸮``⸮⸮⸮ This is the best comms output I could produce. The pin assignment seems totally without rhyme or reason to me. I got this from ATtiny pin 5, using "pin 3" in the IDE. No diagram matches this so yea, no clue. $1 Arduino boards work great! :p maybe ...

I used my attiny85 with https://github.com/kalymos/PsNee/blob/master/PsNee.ino and it worked fine, commenting out the ntsc fix. The pin numbers here are the not the same as the physical pins, they are the same as the PINB numbers, if you want to try it, it connects to different points on the ps1. I ...

https://github.com/SpenceKonde/ATTinyCore has serial TX is AIN0, RX is AIN1 when it's on the pins can't be used for anything else. it explains it about half way down the page. Are you using the same library?

I'll investigate more when my usb to serial thing arrives. At the moment i'm using an arduino as isp to program my attiny85. I changed my blink program to portb and it works the same, but when i change pinmode to pin6 the led is very dim. Any way i'll keep on investigating and learning while I wait.

i tried this blink program with led on chip pin 6 or pinb1, it works as expected, i'm using https://github.com/SpenceKonde/ATTinyCore, i suppose that could make a diffrence it's a coincidence that the pins and bits are the same, i know with a pro mini pin 8 = PB0 As you can see I use pin 1 to set up...

I looked at the datasheet on page 64

http://www.atmel.com/images/atmel-2586- ... asheet.pdf

The bit and the pin numbers are the same.

I tried to port the code to my attiny85 but it didn't work. I added a new define #define ATTINY #ifdef ATTINY // board pins #define sqck 3 // connect to PSX HC-05 SQCK pin #define subq 4 // connect to PSX HC-05 SUBQ pin #define data 2 // connect to point 6 in old modchip diagrams #define gate_wfck 0...

I found that pin here http://modchip.aeug.org/install/508-pu18-stealth.html.

my ps1 works OK. If you recommend a different pin I can try that too.

I found the pins from different sources. I wanted to bring it all together.

I edited the PU18 install guide to include the gate pin and changed the name of Sclk to Sqck to match the code.
I hope it's useful for someone

I tested on scph 5502 with a pro mini and everything worked fine. I connected the gate pin I don't know if I needed to do that. and In the photo on page 5 one point is SCLK in the readme it's SQCK