Sunday 24 December 2023

FreeBSD commands

Find the date of modified files

find . -type f -exec stat -t "%Y-%m" -f "%Sm %N" {} \;

Saturday 23 December 2023

Setting the DHCP domain name on a Draytek router

To set the domain that all DHCP clients become connected to; read the article:

It is performed by issuing a command on the telnet interface:

sys domainname wan1 .local

Sunday 17 December 2023

Emulator Summary

Z80 Spectrum

Zesarux - a good Windows (and Linux) Z80 emulator with a wealth of command-line options. Good for testing Z80 Assembler.

Zero Emulator - a good Z80 Spectrum emulator, written in C#, that runs on Windows.


Qemu -  a good emulator that runs on Linux. Good for x86 assembly.

Friday 15 December 2023

The role of launch.json and tasks.json in VSCode

Launch.json describes the activity that takes place when the debugger is launched or the program is started.

It can rely upon a task defined in tasks.json - see "preLaunchTask".

You can reference variables defined in settings.json.

You can build up a dependency tree of tasks using "dependsOn".

If you want to launch an application such as an emulator as part of the debugger - and leave it running - then you define it as a background task. But it is necessary to set a problem watcher for it to work.

You will need to manually close the task in VSCode when you are done debugging.