MegaFRANK is a hardware emulation platform built around the Raspberry Pi RP2350 QFN module
This megafrank-u4 board is a sub-fork from https://github.com/rh1tech/frank repository originally designed by Mikhail Matveev, r1tech
- Two stacked USB-A ports were added on front board edge. 4 USB-A host ports total
- Power barrel 5mm connector was moved to right edge of the board
- ESP-RESET connected to PGPIO36 (optional, available if S11 jumper is closed)
| Switch | Function |
|---|---|
| TDA | Sound path through I2S TDA (On) or PWM (Off) |
| TS | Enable TurboSound path (On) |
| TAPE | Connect TAPE IN analog input to RP2540B |
| MONO | Mono (On) of Stereo (Off) sound path |
| MPU | Enable +3V3 external pullup on GPIO0/1 (Mouse/UART port) |
| SHDN | Shutdown (On) speaker amplifier PAM8403 (outputs J13, J14) |
| TDA | TS | Output selected |
|---|---|---|
| off | off | RP2350 PWM |
| ON | off | I2S TDA1387T |
| off | ON | Turbosound 2xAY-3-8910 |
| ON | ON | Output Disabled |
Please read detailed docs in original project FRANK repository
