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Unfortunate the Pi 4 is more like a PC with a few layers of turtles between the user and the hardware. Up until then the pi were more like a microcontroller wit
by rusk 3y ago
Unfortunate the Pi 4 is more like a PC with a few layers of turtles between the user and the hardware. Up until then the pi were more like a microcontroller with a UI layer atop. You could peel that back and get at the raw goodies. The newer pi is vastly more complex and requires all these dark processes and proprietary firmware blobs beneath the OS to make it go.
- indigodaddy 3y agoAh interesting thanks for the info and context
- lproven 3y ago> Up until then the pi were more like a microcontroller with a UI layer atop. This is not my area of expertise but from my understanding and reading, I would dispute that, strongly. The Pi 1, 2 & 3 all run the ThreadX RTOS on the GPU as their "firmware" and the Arm core(s) are started by ThreadX: https://en.wikipedia.org/wiki/ThreadX https://en.wikipedia.org/wiki/ThreadX Now ThreadX is owned by Microsoft but it wasn't when the Pi was designed and built. I love your turtles allusion but the Pi never was a simple or clean (or FOSS) design. The Pi Pico is, relatively speaking, but it's not really a Pi.
- rusk 3y agoI perhaps overpaid the simplicity of the early pi’s but the point I was was making that you missed was more of comparison between the pi4 and the earlier models. Thanks.
- lproven 3y agoIs the Pi 4 so different in this regard? It has more flexibility in what it boots from and so on, but ThreadX and so on are still involved. I was told that the Pi 5 is significantly different, but not the 4. Are you perhaps mixing them up?