---
title: "H8 CP/NET SPI WIZNET Network Card"
url: "https://maker.wiznet.io/teddy/projects/H8-CPNET-SPI-WIZNET-Network-Card/"
markdown_url: "https://maker.wiznet.io/teddy/projects/H8-CPNET-SPI-WIZNET-Network-Card/md"
type: "UCC: User Created Content"
author: "teddy"
author_url: "https://maker.wiznet.io/teddy/"
original_author: "teddy"
original_url: "http://koyado.com/Heathkit/H8_CP_NET_SPI_Wiznet_Network.html"
published: "2022-02-03"
language: "en"
likes: 0
views: 133
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# H8 CP/NET SPI WIZNET Network Card

> H8 CP/NET SPI WIZNET Network Card

Original author: teddy (source: http://koyado.com/Heathkit/H8_CP_NET_SPI_Wiznet_Network.html)

## Article

https://github.com/durgadas311/cpnet-z80/blob/master/md/H8XSPI.md http://koyado.com/Heathkit/H8_CP_NET_SPI_Wiznet_Network.html

### Description

This module implements the SPI-to-W5500 interface used on Heathkit H8/H89 computers. This interface includes an NVRAM chip for storing network configuration.

See also?[H8XSPI](http://koyado.com/Heathkit/H8_CP_NET_SPI_Wiznet_Network.html)

### <https://github.com/durgadas311/cpnet-z80/blob/master/md/H8XSPI.md#building>Building

make NIC=w5500 HBA=h8xspi

### <https://github.com/durgadas311/cpnet-z80/blob/master/md/H8XSPI.md#using>Using

A compatible server is implemented in CpnetSocketServer.jar. The utility WIZCFG.COM is used to setup the NVRAM, and the CP/NET startup code will program the W5500 from NVRAM.

The H8XSPI resets the W5500 during system RESET, so its settings are lost during system RESET-reboot. The NVRAM will retain the settings and is automatically used during CP/NET startup.

---

Source: https://maker.wiznet.io/teddy/projects/H8-CPNET-SPI-WIZNET-Network-Card/