A = system error code to display standard error box message
A = 0, no error message after exit
This is the call which the application must make to terminate itself; in particular in the error handler when responding to a <>KILL request. Note that this call does NOT automatically close files and deallocate memory - the application must do this before making the call. Register changes are not fixed, as the code previously executing is not re-entered.
OS_Poll, poll for an application DC_Pol, poll for card usage OS_Ent, enter an application DC_Ent, enter new application DC_Nam, name current application OS_Exit, exit an application DC_Bye, exiting current application OS_Stk, stack current process (application) OS_Use, process card usage