MON-3 User Guide
MON3 User Guide v1.6 by Brian Chiha documents the MON-3 monitor ROM for the TEC-1G single-board Z80 computer.
Mon3 (Talking Electronics Computer Monitor version 3) is custom-built for the TEC-1G Single Board Z80 Computer. Mon3 is the heart of the TEC-1G. It brings the hardware to life. Consider it an operating system that provides the ability to program the TEC. The monitor is designed for beginners who are just learning to code Z80 and rich enough for the advanced software developer.


The version of this document matches the monitor’s binary file version. For example, version 1.2 of this document is for file MON3-1G_BC23-12.bin. The 12 at the end of the file is the version number.
MON-3 provides the operating environment for the TEC-1G: reset behaviour, the main menu, data entry mode, debugging support, terminal monitor, API calls, add-on interfaces, drive access, quick-start programs, and hardware reference material.