[[Image:%3Fattach%3D34008;image.jpeg|thumb|USIfAC II]]The '''U'''niversal '''S'''erial '''I'''nterface '''f'''or '''A'''mstrad '''C'''PC (USIfAC), currently in version 2 (Styled USIfAC II), is a modern serial interface based around a PIC microcontroller designed and built by [[ikonsgr]] from the CPCWIKI Forums.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]]. The board allows for TTL serial output and connection to a USB Stick as well as a ESP8266 WIFI module. The board has been used for many purposes including:
https:{| class="wikitable"|-| • Run games//wwwprograms from a usb stick or PC Hard Drive (through ESP8266 WiFi module or UART serial cable).cpcwikiSave is also supported, as well as full access to ASCII files too.eu |-| • Full read/imgswrite access of DSK images of both AMSODS and PARADOS formats.|-| • Very fast loading speeds of up to ~30kb/esec (more than 6-7 times faster ,than a usual speed of a gotek/e4/%3Fattach%3D34008%3Bimagefloppy disk drive).|-| • Access up to Four DSK images and choose them "on the fly", to support all multi-image Games.|-| • Load SNA snapshot files.|-| • MIDI, RS232 and accessing online BBS.jpeg|}
The board allows for TTL serial output and connection to a USB Stick as well as a ESP8266 WIFI module'''Project's Main Thread''':- https://www. The board has been used for many purposes including running games from Usb Stick, MIDI, RS232 and accessing online BBScpcwiki.eu/forum/index.php?topic=17425.0
'''Project's Main 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!/ Special thread for technical problems & support: https://www.cpcwiki.eu/forum/hardware-related/usifac-ii-technical-problems-support/index.php?topic=20244.0
Details of hardware, software and manuals are available here: https://www.dropbox.com/sh/ezzga2dppm6jlm7/AACwFC_rv2QatWh_ndKc9fhma?dl=0
'''Useful links about USIfAC II''':
- '''3d case''': https://www.cpcwiki.eu/forum/index.php?msg=207446
- '''Usifac II schematics''' & raster implementation:https://www.cpcwiki.eu/forum/index.php?msg=212833
- '''LiliCPC, the Largest Game Launcher collection''' ever created: https://www.youtube.com/watch?v=0qvMmoQs0bc Download [https://mega.nz/folder/93pR2KiA#qlkiFakrZhSzmko65EbTWw/folder/pmpEiYBZ '''here''']
- '''Symbos supporting USIfAC II''': https://www.cpcwiki.eu/forum/index.php?msg=225997
- Load '''CPM Plus''' for USIfAC II (mass storage support): https://www.cpcwiki.eu/forum/index.php?topic=18852.0
- A list of ~250 Classic and worth to play games: https://www.cpcwiki.eu/forum/index.php?topic=17446.0
- A small Basic utility for easily mounting dsk images to the 4 image slots: https://www.cpcwiki.eu/forum/index.php?msg=200760
- Some stuff about linux & python: https://www.cpcwiki.eu/forum/index.php?msg=201894
- '''3d case'''Simple way to detect USIfAC II: https://www.cpcwiki.eu/forum/index.php?msg=207446 213269
- '''Usifac II schematics''' & raster implementationFile Menu Maker:https://www.cpcwiki.eu/forum/index.php?msg=212833216619
- Simple way to detect '''Disable completely & re-enable board''': https://www.cpcwiki.eu/forum/index.php?msg=217889 (useful for troubleshooting problems with multiple boards connected) - Flash Gordon & USIfAC IItroubleshohoting: https://www.cpcwiki.eu/forum/index.php?msg=219228 - ESP 8266 WiFi module Hints & Tips: https://www.cpcwiki.eu/forum/index.php?msg=213269221196
- Load '''CPM PLUS=== Anyone interested, please contact at: ikonsgr745@hotmail.com ===''' for USIfAC II (mass storage support): https://www.cpcwiki.eu/forum/applications/hdcpm-boot-and-run-cpm-plus-from-hard-disk/