Thread:- https://www.cpcwiki.eu/forum/amstrad-cpc-hardware/usifac-iimake-your-pc-or-usb-stick-an-hdd-for-amstrad-access-dsk-and-many-more!/
The only chip on the board is the 18F47Q10 PIC. The PIC software is written in Great Cow Basic and has been released by [[ikonsgr]]. Details of software and manuals are available here: https://www.dropbox.com/sh/ezzga2dppm6jlm7/AACwFC_rv2QatWh_ndKc9fhma?dl=0
Details of hardware, software and manuals are available here: https://www.dropbox.com/sh/ezzga2dppm6jlm7/AACwFC_rv2QatWh_ndKc9fhma?dl=0 The board allows for 5v serial output and connection to a USB SD card module as well as a ESP8266 WIFI module. The board has been used for many purposes including running games from SD Card, MIDI, RS232 and accessing online BBS.