===== useful links =====
[https://github.com/cormacj/AmstradCPCRomHacks A collection of scripts for working with Amstrad CPC ROMs]
[https://github.com/cormacj/rodos-disassembly/tree/main My RODOS work]
[https://wikiti.brandonw.net/index.php?title=Z80_Optimization Z80 Optimization]