Ooh. I&#x27;ve been putting together a VT420 emulator and I am trying to figure out the best way to build one from scratch. I will probably end up building an RP2040 version of the video controller.These look great, but I wonder if there&#x27;s an 800x420ish version out there.

I just refreshed my memory - they were called Programmable Realtime Units on this chip: <a href="https:&#x2F;&#x2F;uk.rs-online.com&#x2F;web&#x2F;p&#x2F;microprocessors&#x2F;1219716" rel="nofollow">https:&#x2F;&#x2F;uk.rs-online.com&#x2F;web&#x2F;p&#x2F;microprocessors&#x2F;1219716</a>Can the “little” cores in big.little arches be run entirely independently then? That’s pretty cool if so.

&gt; Specialized IO coprocessors which are programmed using “code” like PIOWhich is exactly what GP was talking about: the TI PRU cores are this.

Application &#x2F; realtime split cores are very common, STM32MP* was designed around the application processor &#x2F; realtime processor split, I don’t remember if that’s what was on that Beaglebone. Any “big” application processor these days will have a variety of smaller generic cores (Cortex-M style) around it, some which usually handle programmable I&#x2F;O.A lot of microcontrollers also have pretty sophisticated interrupt controllers and timing analyzers which can be used to accomplish similar tasks, although they’re usually “programmed” by chaining register effects so it’s nowhere near as elegant as PIO.Specialized IO coprocessors which are programmed using “code” like PIO is are a little less common, Infineon Peripheral Control Processor springs to mind.

Always impressed with the PIO capabilities.Reminds me of the old BeagleBone Black that had two small separate cores that worked in a similar way. Someone used it to create a 3D printer control system.Are there any other chips out there like this?

These screens look amazing, but $1500-2500 is a bit much. Any other screens with this monichrome CRT style?

Driving TFEL with RP2040: Offloading the CPU step by step (2021)