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jvanderberg
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Joined: 06/05/2026
Location: United States
Posts: 82

Posted: 12:52pm 16 Jun 2026

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MMBasic Anywhere ESP32-S3 and ESP32 (CYD) Port

A short demo: https://www.youtube.com/watch?v=zf4n1SS0AKc

I’ve spent the last month porting MMBasic to the ESP32-S3 and ESP32 classic. Both target the ESP-IDF. Because the IDF brings along its own framework and an RTOS, without PSRAM things get a bit tight. Most ESP32-S3s have PSRAM though, and it works well.

I’ve tested on the Freenove 2.8” LCD Capacitive touch (this is like a fancy CYD) and the Adafruit ESP32-S3 Metro. I can recommend the Freenove over just about any CYD, it’s about the same price, has much better sound, PSRAM, and better touch. The Adafruit Metro is a good general purpose dev board, but you’ll have to BYO display and sound.

Both ports support VGA out, though on the ESP32 classic bit depth is pretty limited because of memory constraints.

You can download these in the latest releases:
https://github.com/jvanderberg/PicoMiteAllVersions/releases/tag/latest

MMBasic-Anywhere-esp32-cyd-merged.bin
MMBasic-Anywhere-esp32-s3-octal-merged.bin
MMBasic-Anywhere-esp32-s3-quad-merged.bin

The octal/quad bifurcation is unfortunate. If you don’t get PSRAM working using the ‘octal’, try the ‘quad’. Sadly this can’t be a runtime option, so I have to publish two images.

PhenixRising
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Joined: 07/11/2023
Location: United Kingdom
Posts: 1957

Posted: 03:03pm 16 Jun 2026

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Darn it...ANOTHER distraction

I just happen to have the 7" CYD (ESP32-8048S070)

PhenixRising
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Joined: 07/11/2023
Location: United Kingdom
Posts: 1957

Posted: 05:03pm 16 Jun 2026

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Tried both S3 versions which loaded and verified and then connected via terminal but:

Quote invalid header: 0xffffffff

Do you have a particular loading procedure?

jvanderberg
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Joined: 06/05/2026
Location: United States
Posts: 82

Posted: 06:11pm 16 Jun 2026

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PhenixRising said Tried both S3 versions which loaded and verified and then connected via terminal but:

Quote invalid header: 0xffffffff

Do you have a particular loading procedure?

Need a bit more detail. What were you trying to do? The readmes in the port directories for each have detailed flashing instructions.

PhenixRising
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Joined: 07/11/2023
Location: United Kingdom
Posts: 1957

Posted: 07:00pm 16 Jun 2026

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Been looking all afternoon for readmes....Really shouldn't be this hard. WTF!

jvanderberg
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Joined: 06/05/2026
Location: United States
Posts: 82

Posted: 07:10pm 16 Jun 2026

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PhenixRising said Been looking all afternoon for readmes....Really shouldn't be this hard. WTF!

https://github.com/jvanderberg/PicoMiteAllVersions/tree/main/ports/esp32_cyd

https://github.com/jvanderberg/PicoMiteAllVersions/tree/main/ports/esp32_s3

JohnS
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Joined: 18/11/2011
Location: United Kingdom
Posts: 4335

Posted: 07:13pm 16 Jun 2026

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PhenixRising said Been looking all afternoon for readmes....Really shouldn't be this hard. WTF!

I expect they're in the ports directories

I don't know which you want but for example there's the esp32_s3

edit: both posting, great minds LOL

John
Edited 2026-06-17 05:16 by JohnS

PeteCotton

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Joined: 13/08/2020
Location: Canada
Posts: 630

Posted: 08:24pm 16 Jun 2026

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Wow! Very cool

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