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UniFLEX

an UniFLEX compatible hardware/software project on Eurocards

jaden

Published September 14, 2026

133 UCC

18 WCC

55 VAR

Original author: kees1948 · the NetherlandsOriginal source (new tab)

UniFLEX

Components

Hardware components
W5500

WIZnet - W5500

x 1

WIZnet parts

Project description

How to Add TCP/IP Networking with WIZnet W5500 to UniFLEX on a 6809/6309 Eurocard System? Summary The UniFLEX project adds modern TCP/IP networking to a Motorola 6809/HD6309 Eurocard computer by combining Berkeley-style socket calls in the operating system with a CPU09GPP I/O processor and a 09NET daughterboard built around the WIZnet W5500. The W5500 provides the Ethernet MAC/PHY, hardwired TCP/IP processing, eight independent hardware sockets, and packet buffering, while the GPP processor translates UniFLEX socket operations into W5500 SPI transactions. This architecture keeps networking…

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