About this projectHER/12 is my second attempt to produce a minicomputer based on discrete ICs. The first attempt, namely "Heritage/1", was a 16 bit minicomputer and failed mostly because of wrong decisions made in terms of implementation. HER/12 inherits most of the ideas developed for the former, but in a more realistic manner.
The HER/12 project started by the end of January 2018 and this web site has been used since then as a systematic documentation tool. The site constitutes a complete manual of the machine, written ahead of time; such a practice has proven right as it helped me to organize ideas and mature the design long before implementation.
Once the architecture was defined well enough, a functional simulator software (HERSIM) was written.
This proven useful too. Thanks to HERSIM, the computer design could be fine tuned in cold before getting into the expensive and time consuming task of building and testing the actual circuits.
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