4 notes on commands for executing program, Notes on commands for executing program – FUJITSU SOFTUNE F2 MC-16 User Manual
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CHAPTER 2 DEPENDENCE FUNCTIONS
2.6.4.4
Notes on Commands for Executing Program
When using commands to execute a program, there are several points to note.
■
Notes on GO Command
For the GO command, two breakpoints that are valid only while executing commands can be set. However,
care is required in setting these breakpoints.
●
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.
■
Notes on STEP Command
●
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)