Changes

* [http://www.grimware.org/doku.php/documentations/devices/crtc CRTC documentation from Grimware]

* [http://quasar.cpcscene.net/doku.php?id=assem:crtc Quasar CRTC documentation (in french)]

* [[File:ACCC1.7-EN.pdf]] [[File:ACCC1.7-FR.pdf]] CPC CRTC Compendium - Latest (10/2023!) document containing in-depth info about CRTC programming on CPC.