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THE eZ80 WEBSERVER

An 8-Bit CPU Takes on the Internet

by James Antonakos

Start ý Software Model ý Memory Map ý Instruction Set ý On-Chip Peripheral Registers ý Hardware Architecture ý TCP/IP Stack Operation ý eZ80 Evaluation Board ý Connecting the System ý Developing the Hardware and Software ý Application: A Web-Based Security System ý Other Applications ý Win Your Own! ý Sources and PDF

ON-CHIP PERIPHERAL REGISTERS

Accessing the on-chip peripherals is done through the use of internal registers mapped to various I/O port addresses. Any I/O operation to a port in the range of ports shown in Table 2 accesses the on-chip register. I/O operations to port addresses between 00 and 7F cause the external I/O signals to activate.

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