68K System Monitor

GE Energy ServicesUser's Guide

SB - Step Breakpoint

Platform

 

þ

CPM

D20

D20 ME

D20/200

D20/200 ME

þ

D25

 

 

 

þ D20 Base o D20 Base

o CCU Base

þ CCU Base

 

 

 

 

 

 

 

 

Description

 

Use this command to single step a process that was suspended at a breakpoint.

 

 

 

 

It also allows executing multiple program steps in a single command.

 

 

 

 

 

 

 

 

 

 

 

Syntax

 

Below is usage and syntax information for this command

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Command Format

 

sb break_pt# [#instructions]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Variables

 

 

None

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Parameters

 

 

break_pt# =

breakpoint number as returned with the define

 

 

 

 

 

 

 

 

breakpoint command.

 

 

 

 

 

 

 

 

 

 

#instructions =

number of additional instructions to execute

 

 

 

 

 

 

 

 

 

prior to stopping; default is zero.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Example

 

 

Type sb 2 1 and press ENTER.

 

 

 

 

 

 

 

 

 

 

This allows the process defined by the breakpoint number of 2

 

 

 

 

 

 

 

to perform two program instructions.

 

 

 

 

 

 

 

 

 

 

Results: The system responds with the prompt. Additionally,

 

 

 

 

 

 

 

each time it completes a program step, the system

 

 

 

 

 

 

 

 

displays the breakpoint number, instruction count,

 

 

 

 

 

 

 

 

and register values. If the instruction count is greater

 

 

 

 

 

 

 

than zero, it is decremented. Otherwise, the process is

 

 

 

 

 

 

 

suspended.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Special

 

 

None

 

 

 

 

 

 

 

 

Considerations

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SWM0023 1.00 2

General

3-68

Full Release

 

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GE 68K System manual SB Step Breakpoint