Fujitsu F2 MC-16 Benutzerhandbuch

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CHAPTER 2  DEPENDENCE FUNCTIONS

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It is a function to abort the program by observing the specified address. The break is done before an

instruction the specified address is executed. It is possible to set it in this 65535 debuggers.

When a break occurs due to a code break, the following message is displayed on the Status Bar.

Break at Address by breakpoint

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The code break is controlled by the following method.

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Command

- SET BREAK

Refer to "3.1 SET BREAK (type 1)" in "SOFTUNE Workbench Command Reference Manual".

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Dialog

- Breakpoints set dialog [Code] tab

Refer to "4.6.4 Breakpoint" in "SOFTUNE Workbench Operation Manual".

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Window

- Source window/Disassembly window

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There are several points to note in using code break. First, some points affecting code break are explained.

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Invalid Breakpoints

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No break occurs when a breakpoint is set at the instruction immediately after the following instructions.

F

2

MC-16/16L/16LX/16H:

• PCB   • DTB   • NCC  • ADB   • SPB   • CNR

• MOV  ILM,#imm8

 • AND  CCR,#imm8

• OR   CCR,#imm8

 • POPW PS

F

2

MC-16F:

• PCB   • DTB   • NCC   • ADB   • SPB   • CNR

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

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No break occurs when both following conditions met at one time.

- Instruction for which breakpoint set starts from odd-address

- Preceding instruction longer than 2 bytes length, and breakpoint already set at last 1-byte address of

preceding instruction (This "already-set" breakpoint is an invalid breakpoint that won't break, because

it has been set at an address other than the starting address of an instruction.)