*[https://www.cpcwiki.eu/forum/amstrad-cpc-hardware/gate-array-decapped! Forum thread] Reverse engineered Gate Array by Gerald from decapped chips [https://pastebin.com/ZQyL68Hv Ash Evans] [https://github.com/MiSTer-devel/Amstrad_MiSTer/tree/master/rtl/GA40010 Gyorgy Szombathelyi] [https://github.com/codedchip/AMSGateArray AMSGateArray] Subsequent Verilog/VHDL implementations [https://bread80.com/2021/06/03/understanding-the-amstrad-cpc-video-ram-and-gate-array-subsystem/ Signals analysis by Bread80]
*[https://k3pi.chickenkiller.com/dzi/ ASIC and Pre-ASIC] [https://www.cpcwiki.eu/forum/amstrad-cpc-hardware/gate-array-decapped!/msg133264/#msg133264 Gate Array] [https://siliconpr0n.org/map/zilog/z0840008psc-z80cpu/ Z80 CPU] [https://www.seanriddle.com/6845/ HD6845SP CRTC] [http://seanriddledecap.blogspot.com/2023/12/blog-post_31.html AY-3-8912 PSG] [http://seanriddledecap.blogspot.com/2017/01/blog-post_42.html NEC D765 FDC] Die shots of decapped CPC chips. How to: [https://github.com/veniamin-ilmer/decoding_rom Optically decode the ROM of a decapped chip] [https://github.com/travisgoodspeed/gbrom-tutorial Automate ROM decoding] [https://c128.se/posts/silicon-adventures/ Decap, image and reverse engineer the C128 PLA chip] [https://oric.signal11.org.uk/html/ula-dieshot.htm Reverse engineered Oric ULA chip]
*[https://lotharek.pl/productdetail.php?id=408 AY_FPGA] AY-3-8912 FPGA replacement with few extra features
*[https://thecheshirec.at/2023/11/21/5-multi-crtcs-a-vendre/ Multi-CRTC Board] Host and select between multiple CRTC chip types in one CPC