Renesas Single-Chip Microcomputer M306NKT3 User Manual page 70

M306NKT3-RPD-E User's Manual
3) Trace Window (Bus mode display)
4) Trace Window (Disassemble mode display)
5) Trace Window (Source mode display)
6) Trace Window (Data access mode display)
REJ10J0326-0400 Rev.4.00 Sep. 01, 2006
3. Usage (How to Use the Emulator Debugger)
Explanation of the trace window (bus display)
Shows the status of the address bus.
- Address
Shows the status of the address bus.
- Data
Shows the status of the data bus.
- BUS
Shows the width of the external data bus. In the present
emulator, "16b" for 16-bit wide bus and "8b" for 8-bit wide
bus are displayed.
- BIU
Shows the status between the BIU (Bus Interface Unit) and
memory or I/O.
Symbol Status
- : No change (non-active)
DMA : Data access except for CPU
INT : Interrupt acknowledge cycle
IB : Instruction code read (bytes) by CPU
DB : Data access (bytes) by CPU
IW : Instruction code read (words) by CPU
DW : Data access (words) by CPU
- R/W
Shows the status of the data bus. Displayed as "R" for Read,
"W" for Write, and "-" for no access.
- RWT
This is the signal to indicate a valid bus cycle. When valid,
RWT = 0. The Address, Data, and the BIU signals are effective
when this signal is 0.
- CPU
Shows the status between the CPU and BIU (Bus Interface
Unit).
Symbol Status
CB : Op-code read (bytes)
RB : Operand read (bytes)
QC : Clears instruction queue buffer
CW : Op-code read (words)
RW : Operand read (words)
QN
-
Shows the byte count stored in the instruction queue buffer.
The display range is 0 to 4.
- 76543210
Shows the level of external trace signal input cable EXTIN0 to
EXTIN7.
- h" m' s: ms. us
Shows the elapsed time after starting the user program.
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