The ESP8266 and ESP32 have a very similar memory mapped quad-SPI setup. The (old...

makomk on Nov 30, 2016 | parent | context | favorite | on: HiFive1: A RISC-V-based, Open-Source, Arduino-Comp...

The ESP8266 and ESP32 have a very similar memory mapped quad-SPI setup. The (older, cheaper, more limited) ESP8266 is probably the most similar in terms of peripheral set etc, though that obviously still has more RAM, WiFi, I2C and I2S which this lacks.