![](http://datasheet.mmic.net.cn/290000/XPC801ZP25_datasheet_16187868/XPC801ZP25_14.png)
TABLE OF CONTENTS (Continued)
Paragraph
Number
Page
Number
Title
xvi
MPC801
USER’S MANUAL
MOTOROLA
Section 17
Data Alignment
Section 18
Development Support
18.1
18.1.1
18.1.1.1
18.1.1.2
18.1.1.3
18.1.1.4
18.1.1.5
18.1.1.6
18.1.2
18.2
18.2.1
18.2.1.1
18.2.1.2
18.2.1.3
18.2.1.4
18.2.1.5
18.2.1.6
18.2.2
18.2.2.1
18.2.2.2
18.2.2.3
18.2.2.4
18.3
18.3.1
18.3.2
18.3.2.1
18.3.2.2
18.3.2.3
18.3.2.4
18.3.2.5
18.3.2.6
18.3.3
18.3.3.1
18.3.3.2
18.3.3.3
Program Flow Tracking ......................................................................18-1
Basic Operation ........................................................................18-2
The Internal Hardware ..................................................18-2
Special Case of Queue Flush Information ....................18-4
Program Trace In Debug Mode ....................................18-5
Sequential Instructions Marked As Indirect Branch ......18-5
The External Hardware .................................................18-5
Benefits of Compression ..............................................18-7
Controlling the Instruction Fetch Show Cycle ..........................18-8
Watchpoint And Breakpoint Generation .............................................18-8
Internal Watchpoints and Breakpoints .....................................18-9
Features .....................................................................18-11
Restrictions .................................................................18-12
Byte And Half-Word Working Modes ..........................18-12
Context Dependent Filter ............................................18-14
Ignore First Match Option ...........................................18-14
Generating Compare Types .......................................18-15
Basic Watchpoint/Breakpoint Operation ................................18-16
Instruction Support .....................................................18-16
Load/Store Support ....................................................18-17
Counter Support .........................................................18-18
Trap Enable Programming .........................................18-20
Development System Interface ........................................................18-20
Trap Enable Mode ..................................................................18-22
Debug Mode ...........................................................................18-22
Debug Mode Enable vs. Debug Mode Disable ...........18-24
Entering Debug Mode .................................................18-24
CheckStop State And Debug Mode ............................18-27
Saving the Machine State in Debug Mode .................18-27
Running in Debug Mode .............................................18-28
Exiting Debug Mode ...................................................18-28
The Development Port ...........................................................18-28
The Development Port Pins ........................................18-29
Development Port Registers .......................................18-30
Development Port Serial Communications .................18-31