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Possibly The Newest ISA Card

Open-source ISA interface for IBM XT/AT. ATmega328P emulates SD as HDD. WIZnet W5500 allows efficient Ethernet via hardware TCP/IP.

Possibly The Newest ISA Card

Components

Hardware components

WIZnet parts

Project description

* All images in this article were generated by Gemini. ISACard – SD Storage & WIZnet W5500 Network Interface for the PC ISA Bus 1. Overview The ISACard is an open-source ISA expansion card designed for 1980s–1990s IBM PC compatible systems (XT/AT class). It enables retro PCs to use modern SD storage and Ethernet networking (via WIZnet W5500) on a single card. Originally inspired by the Apple II SDCard interface project, the ISACard adapts and extends the concept for PC architecture—providing two major enhancements to legacy systems: large-capacity storage and network connectivity. 2…

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