FlashBASIC Debugger Commands

When the BASIC/FlashBASIC debugger is entered, it indicates the source code line number to be executed next and prompts for commands with an asterisk.

The following FlashBASIC debugger commands are presented:

# Command	Displays the item-ID of the error message that caused the most recent abort into the BASIC/FlashBASIC debugger.
$ Command	Displays the current program name and current line number, and verifies the object code.
$! Command	Displays the current call stack with parameter names and values being shown.
/ Command	References and optionally alters the contents of variables within the run-time code being executed.
? Command	Displays the current program name and line number.
?! Command	Displays the current call stack with current parameter values being shown.
b Command	Establishes a breakpoint condition in the breakpoint table that causes the program to enter the BASIC/FlashBASIC debugger when the condition defined in the breakpoint expression is met.
c Command	Toggles on or off the display of the current source line when stepping through the program with CTRL+J.
CTRL+J Command	Has the same effect as the BASIC/FlashBASIC debugger g command, except that CTRL+J only requires one character.
CTRL+N Command	Similar to the BASIC/FlashBASIC debugger g command except that if single-stepping is active, the CTRL+N command will step over any subroutine calls.
d Command	Displays the contents of the breakpoint and trace table.
de Command	Invokes the system debugger from the BASIC/FlashBASIC debugger.
debug Command	Temporarily exits the BASIC/FlashBASIC debugger and invokes the system debugger.
down Command	Used to move down the call stack.
e Command	Indicates the number of instructions to execute prior to returning to the BASIC/FlashBASIC debugger.
edit Command	Invokes the Update Processor for editing the current program from within the BASIC/FlashBASIC debugger.
end Command	Terminates the run-time portion of a BASIC or FlashBASIC program, exits the debugger, and returns control to TCL.
g Command	Resumes execution of a program after it has been interrupted by the execution of a BASIC/FlashBASIC debug statement or by pressing ESC or BREAK.
k Command	Kills a breakpoint previously set with the b command, and removes the entry from the breakpoint table.
l Command	Lists the current source line, or a specified range of lines, from the corresponding source program being executed.
lp Command	Toggles the line printer bit status, either directing debugger output to the terminal screen or to the Spooler.
n Command	Ignores any debugger breakpoint conditions for a specific number of occurrences.
off Command	Stops processing at all levels on the current port and returns control to the initial logon prompt.
p Command	Toggles disabling output display; debugger output is still displayed.
pc Command	Closes the current spooler entry and releases the print job to the Spooler.
r Command	Pops the top return stack address of the local subroutine from the stack, causing the next return command to return to the address revealed by the pop.
return Command	Returns from the current subroutine in the BASIC/FlashBASIC debugger. All code from the current debug point to the end of the routine is executed normally.
s Command	Displays the contents of the subroutine stack.
t Command	Places a given variable into the trace table, causing the debugger to display the specified data element along with the contents of the break and trace tables on each break.
u Command	Removes from the trace table a given variable, or all variables, previously specified with the t command.
up Command	Used to move up the call stack.
v Command	Verifies the current BASIC object code by performing a checksum verification. This determines if the object code has been corrupted since the last time it was compiled.
[ Command	Sets the left output zone limits of debugger display.
\ Command	Displays the current value of a variable or integer expression.
] Command	Sets the right output zone limits of debugger display.