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view wiki/Detailed CPU1-Upper Project.md @ 569:3508e6dc4f22

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Added new section "lower.font": To avoid section overlap caused by the memory needs of the new characters, a new section has been introduced to store the font data behind the code and data sections. The handling is a little bit overengineered but was used to have the same look as the upper section, where a defined structure had to be rebuild to match the output of another compiler. moving the lower section behind the upper would save firmware space but result in the need of a new fontlib version.
author Ideenmodellierer
date Mon, 30 Nov 2020 20:52:49 +0100
parents 5f11787b4f42
children
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# How to Create From Scratch a Project for _CPU1-Upper_ Code #

The main CPU (aka. _CPU1 Discovery_) firmware is splitted in two parts:
- The proper _CPU1 Discovery_ firmware, with the main code.
- The _protected upper memory_ firmware, which is programmed during _OSTC4_ production, and contains (amongst other things) code used to upload and install firmware upgrades.

## Make a specific project ##

Follow the same procedure than for [CPU1-Discovery](Detailed CPU1-Discovery Project.md), (same processor, same includes) but include the `CPU1-Upper` source directory.

**
NOT FINISHED YET... BE PATIENT
**