HDMI, Doom and Lightning

You can even run Doom on an iPad HDMI adapter.
The $49 Lightning Digital AV Adapter uses a tiny version of iOS and its own CPU to decode packetized data from Lightning connections, allowing programmers like John (Nyan Satan) to run Doom directly on the Apple hardware.
Check Out Doom Running on Apple's Lightning to HDMI Adapter
Installing Doom on a range of unusual hardware devices has become a fun challenge for programmers, and we've seen the game running on
'Doom' can even be played on Apple's Lightning to HDMI adapter
Developers and enthusiasts continue to find new ways of running Doom on increasingly unusual hardware, the latest of which is an Apple HDMI adapter cable.
Developer successfully runs ‘Doom’ on Apple’s Lightning to HDMI adapter
You’ve probably heard someone say “but can it run Doom?” That’s because running Doom on the most unexpected platforms
It Turns Out You Can Play ‘Doom’ on Almost Anything — Even a Lightning to HDMI Adapter
You might think an adapter has no computing power, and usually, you’d be correct. However, the Lightning to HDMI adapter features a dedicated system-on-a-chip with a processor inside. The adapter runs a stripped-down, very basic version of iOS, intended only to process video signals and nothing else.
Running Doom On An Apple Lightning To HDMI Adapter
As a general rule of thumb, anything that has some kind of display output and a processor more beefy than an early 90s budget PC can run Doom just fine. As [John] AKA [Nyan Satan] demonstrates in
Doom runs on an Apple Lightning to HDMI dongle — SoC inside adapter has enough power for smooth gameplay
A developer could hack into the Apple Lightning to HDMI dongle and run Doom directly on the accessory. According to nyan_satan’s comments in the YouTube video (h/t MacRumors), the $49 Apple Lightning Digital AV Adapter features a custom Samsung SoC with a 400MHz ARM Cortex-A5 core and 256 MiB of DRAM.
You won’t believe what Doom can run on now
A programmer has got 1995's Doom to run on an Apple Lightning to HDMI dongle. The SoC inside the adapter runs a ...
TweakTown1d
Programmers once again push the limit on where DOOM can be played
Programmers have been trying to get DOOM onto as many strange devices as possible, and over the weekend, another odd device was added to the list.