Fujitsu softune f2 mc-16 Manuel D’Utilisation

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CHAPTER 2  DEPENDENCE FUNCTIONS

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For the GO command, two breakpoints that are valid only while executing commands can be set. However,

care is required in setting these breakpoints.

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Invalid Breakpoints

- No break occurs when the breakpoint is set at three instructions or less executed continuously from the

user interrupt.

- No break occurs when breakpoint set at address other than starting address of instruction.

- No break occurs when a breakpoint is set at three instructions or less immediately after the following

instructions.

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Exceptional Step Execution

When executing the instructions listed in the notes on the GO command as invalid breakpoints, such an

instruction and next three instructions are executed as a single instruction. 

Furthermore, when above-mentioned instructions are included in the next continuous instructions, all of them

and the next continuous three instructions or less are executed as a single instruction.

[Example] When instructions as invalid breakpoints is consecutive

F

2

MC-16FX

PCB
NCC
SPB
MOV  ILM,#imm8
OR   CCR,#imm8
INT addr16
INT9
JCTX @A
Undefined instruction

DTB
ADB
CNR
AND  CCR,#imm8
POPW PS
INTP addr24
INT #vct
RETI

POP PS

       (1)

NOP

       (2)

RETI

       (3)

MOVN A,#-0

       (4)

MOVW RW0,A

       (5)

NOP

       (6)

NOP

       (7)