Fastbeta is a firmware for Raspberry Pi 2040/2350 chips that emulates the functionality of the vintage home computers ZX Spectrum series
You will get an almost real ZX Spectrum 48/128/+3e with VGA, HDMI or Composite video output, 2xAY8910, SAA1099 sound emulation, BetaDisk Interface and DivIDE support
The assembly scheme is open and available for modifications
To flash the firmware press and hold BOOT SEL button on your RP2040/RP2350, connect USB cable to the computer, copy the firmware UF2 file to the external flash RP2 drive
