Tasks: Exit Desktop

In the task manager there is a menu item “Exit Desktop” which quits the desktop.

Is it possible to quit the desktop from inside a task i.e. by calling some SWI?

https://www.riscosopen.org/wiki/documentation/show/TaskManager_Shutdown

Having got a small GPS unit working, with no monitor, mouse or keyboard I had to decide what to do if an unexpected error ensued. I decided to do a reboot/restart cycle, logging the actual error message for future analysis. This call was perfect.

With power control in hardware, triggered by the GPIO4 line, the same call would shutdown, reset the computer, force GPIO4 to high impednace (after writing the CMOS clock etc.) taking off the power in a tidy and predictable way.

What am I doing wrong? “Exit Desktop” quits the desktop and ends up in CLI

TaskManager_Shutdown with R0=0 quits the desktop and shows “Restart” message box

And TaskManager_Shutdown with R0=1 quits the desktop and the machine hangs up – no CLI

“Exit Desktop” quits the desktop and ends up in CLI

Correct. The machine starts up in the command line, as witnessed during the boot stuff, then it enters the desktop world. Quitting that…takes you back to the command line.

quits the desktop and the machine hangs up – no CLI

Hmm… Did you try pressing Enter or Esc?
Does Ctrl-G make a beep?

Try SYS “TaskManager_Shutdown”,162