Hi there!
I’ve just finished a project where I built a retro games console using the Raspberry Pi and an old (defunct) PlayStation One.
Details of the project can be found here: https://raspberrycoulis.wordpress.com/2015/10/05/raspberry-pistation-a-retro-games-console/.
As part of this project, I created a custom boot sequence based on the original PSX, and I uploaded this to YouTube:
https://youtu.be/yUuL8hkZ5vI
If anybody would like this, please head over to my blog – Raspberry Coulis – and drop me a message and I’ll send you a link.
Enjoy!
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