Changes

* [[Media:CPC_Plus_Asic_Schematic.GIF|AMS40489 (Amstrad)]] aka Type 3

* [[AMS40226 (Amstrad)]] aka Type 4

==== DIY upgrade ====

*[[Media:CRTC-5-HD6345.pdf|HD6345 (Hitachi)]] aka Type 5 - Upgraded pin-compatible CRTC chip with advanced functionalities [https://thecheshirec.at/2024/05/07/un-crtc6345-sur-amstrad-cpc/ Upgrading the CPC to HD6345]

==== Unused clones ====