Plugins for Total Commander https://formats.kaitai.io/zx_spectrum_tap/index.html
Z80 <-> Intel8080
https://zxpress.ru/article.php?id=1615
ROMs archive
http://zxdn.narod.ru/hardware.htm
Anti-Debug
Online disassembler
+3 Manual - Memory management (ch.8 pt.24)
CP/M Plus (CP/M Version 3.0) Operating System System Guide (PDF)
