68K System Monitor
User's Guide
GE Energy Services
General
SWM0023-1.00 -2
Full Release
2-7
Breakpoint Commands
Description
Use these commands with the
68K Monitor
for control and display of process
breakpoints in the system.
The three restrictions with the definition of breakpoints are:
•
You must define breakpoints in code that is in RAM.
−
The program instruction changes to a 68000 family TRAP instruction.
•
You must define all program breakpoints at the beginning of an instruction.
•
Only define breakpoints in a process.
−
If the interrupt mask is non-zero when you enter the breakpoint handler, the
assumption is that the calling routine is an interrupt service procedure (ISP)
and breakpoints are not valid.
Note:
Diagnostic Commands are suspended in order to use breakpoints.
List of
Commands
This list shows the Breakpoint commands, in alphabetical order:
Command
Description
See Page
CB
Clear Breakpoint
3-9
DB
Define Breakpoint
3-21
PB
Print Breakpoint
3-46
RB
Resume Breakpoint
3-54
SB
Step Breakpoint
3-68
