Renesas M16C Bedienungsanleitung PDF herunterladen (Seite 192)

7.11.8 Display of bus information on the 740 Debugger

From left to right, the contents are as follows:

• Address

The status of the address bus

• Data

The status of the data bus

• Sync

This signal is output when fetching an instruction op-code. When an op-code is being fetched, this

signal indicates a logic 1.This Sync value is sometimes displayed as '(1)'.In this case, it denotes a

dummy Sync meaning that the instruction on the line is not actually executed.

• Read

This signal determines the direct ion of the data bus. When data is to be read, this signal

indicates a logic 0.

• Write

This signal determines the direct ion of the data bus. When data is to be written, this signal

indicates a logic 0.

• B-T

Shows the level of the external break trigger (the EXTIN7 pin of the external trace signal input

cable). High level = "1", Low level = "0".

• Q-T

Shows the level of the external trace trigger (the EXTIN6 pin of the external trace signal input

cable). High level = "1", Low level = "0".

• 76543210

Shows the status of the 8-bit external signal (pins EXTIN0 to EXTIN7 of the external trace signal

input cable). High level = "1", Low level = "0".

• h" m' s: ms.us

Show the elapsed time from the target program beginning.

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Renesas M16C Bedienungsanleitung Seite 192