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July 15, 2017 AT 10:10 am

DOOM (Sans Audio) Ported to ESP32

Wrover-Kit shown in the video:

Okay, if you happen to have hardware with a rev1 ESP32, psram and a LCD, I have something for you: you can run a version of Doom (the 1993 version, not the recent one) on your hardware!

The backstory, for whoever is interested in reading: Back when we started working on PSRam support for the ESP32, I decided to try and port Doom over to the ESP32, specifically the PrBoom version of Doom. Unfortunately, as you all know, Psram support for the ESP32 has been a slightly more rocky road than we expected, and Doom turned out to be a pretty good indication on if we still had bugs left… it’s a pretty complicated program that has a pretty extensive set of memory access patterns, so whenever for example the demo de-synced or the program crashed, we knew we still had work to do. Needless to say: Doom at the moment runs stable on our hardware (as long as you don’t try to do something we didn’t implement.)

At the moment, the code is capable of running in 320×240 with a speed of around 20FPS. You can actually get a few FPS by clocking the flash at 80MHz instead 40MHz, but because Wrover-Kits do not work well at that speed out-of-the-box, we didn’t enable it in the default sdkconfig.

Read more here and here.


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