Motorola MVME187 manual Using the 187Bug Debugger

5

Using the 187Bug Debugger

Note The presence of the upward caret ( ^ ) before a character indicates that the Control (CTRL) key must be held down while striking the character key.

^X	(cancel line)	The cursor is backspaced to the beginning of the line.
^H	(backspace)	The cursor is moved back one position.
Delete	(delete)	Performs the same function as ^H.
key
^D	(redisplay)	The entire command line as entered so far is
		redisplayed on the following line.
^A	(repeat)	Repeats the previous line. This happens only at the
		command line. The last line entered is redisplayed
		but not executed. The cursor is positioned at the end
		of the line. You may enter the line as is or you can add
		more characters to it. You can edit the line by
		backspacing and typing over old characters.

When observing output from any 167Bug command, the XON and XOFF characters which are in effect for the terminal port may be entered to control the output, if the XON/XOFF protocol is enabled (default). These characters are initialized to ^S and ^Q respectively by 167Bug, but you may change them with the PF command. In the initialized (default) mode, operation is as follows:

^S	(wait)	Console output is halted.
^Q	(resume)	Console output is resumed.

When a command is entered, the debugger executes the command and the prompt reappears. However, if the command entered causes execution of user target code, for example GO, then control may or may not return to the debugger, depending on what the user program does.

For example, if a breakpoint has been specified, then control returns to the debugger when the breakpoint is encountered during execution of the user program. Alternately, the user program could return to the debugger by means of the TRAP #496 function

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