* * * HER/12 * * *

HER/12 is a hobbyist project which goal is to design and build a mini-computer using 1970's technologies. Built from discrete SSI and MSI integrated circuits rather than VLSI microprocessor, the machine is meant to taste old and serve well for the years to come.

This section describes the computer's hardware in a generic, introductory way.
The Instructions Set Architecture (ISA) is covered in details.

CPU block diagram, theory of operation, time diagrams and schematics are found in this section.

How to operate the computer and its peripherals.

This section contains specifications developed ahead of time as an attempt to develop a solid ground prior to actual design and implementation.