*[https://www.cpc-power.com/index.php?page=detail&num=15975 FutureOS] [https://www.cpc-power.com/index.php?page=detail&num=4174 CP/M Plus] [https://www.cpcwiki.eu/forum/amstrad-cpc-hardware/464-and-ram-extension/ Behaviour of RAM mode &C3] [https://www.cpcwiki.eu/forum/amstrad-cpc-hardware/upgrading-a-cpc-464-in-2022/ More on the issue] RAM expansion hardware bug on CPC464/664
*🔥[http://www.cpctech.org.uk/test.zip Kevin Thacker's "Acid tests" suite] [https://www.cpcwiki.eu/forum/emulators/amstrad-cpc-'acid'-test/ Forum thread] [http://ace.cpcscene.net/tests:arnold_test_suite Tests results in ACE] Chips tests by arnoldemu
*🔥[http://www.winape.net/downloads.jsp Richard Wilson's Plus Test] [https://www.cpc-power.com/index.php?page=detail&num=15242] CPC and CPC+ Emulator test suite (including Instruction and Interrupt timing tests)
== Amstrad Plus ==