Net4CPC is an Ethernet interface for the Amstrad CPC range of computers.
It is a stand alone implemetation of the Ethernet interface found on the Cyboard.
It is supported by SymbOS and by KCNet utilities for CP/M.
The interface has a Mother X4 compatible connector.
The network module is based on the WIZnet's W5100S embedded ethernet controller and works in indirect parallel bus mode.
In this mode it needs 4 I/O ports:
- #FD20: MR - Common Register MR
- #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
A detailed description on how to program the module, with flow diagrams and programming examples, can be found at the WIZnet's official site:
W5100S TCP Function
W5100S UDP Function
SOCKET-less Command
The PCB has provision for 2 differrent types of Ethernet modules:
- A Chinese W5100S module with an integrated 3.3V regulator.
- The original WIZnet's W5100S or W6100 modules.
The schematic and layout were generated with Autodesk EAGLE 9.6.2 free edition