== Cyboard ==
[https://github.com/salafek/cyboard-for-cpc Cyboard ] is a Symbiface II clone with embedded Ethernet controller for the Amstrad CPC range of computers. [[File:Cyboard-v1.1.png]]
Its Ethernet controller is supported by [[SymbOS]] and by [https://github.com/salafek/KCNet-software-for-Net4CPC KCNet utilities] for CP/M.
The Ethernet controller uses 4 I/O ports:
* #FD20: MR - Common Register
* #FD21: IDM_ARH - Upper 8 bits Offset Address Register
* #FD22: IDM_ARL - Lower 8 bits Offset Address Register
* #FD23: IDM_DR - 8 Bits Data Register
[[Media:Ethernet W5100s ds v125e.pdf|WIZnet W5100S datasheet]]