R0E417250MCU00 Datasheet, PDF (96/228 Pages) Renesas Technology Corp – E100 Emulator MCU Unit for H8SX/1700 Series

R0E417250MCU00 User’s Manual
5. Debugging Functions
5.3 Viewing Memory Data in Real Time
5.3.1 Viewing Memory Data in Real Time
Use the RAM Monitor window to monitor data in memory while the user program is running.
The RAM monitoring function permits recording and inspection of the data in an area of memory for which monitoring has
been assigned and the states of access in real time without obstructing execution of the user program.
The RAM Monitor window shows the access states (read, written, non-initialized or not inspected) in different colors.
(1) Allocating an area for RAM monitoring
A 16-Kbyte RAM monitoring area is provided.
This RAM monitoring area can be allocated to a desired contiguous address range or up to 32 blocks of 512 bytes.
By default, a maximum of 16 Kbytes of space from the first address of the internal RAM is allocated as the RAM monitoring
area.
(2) Monitor display
Access states are indicated by different background colors according to the access attribute as listed below (the background
colors are customizable).
The access attributes “read” and “written” indicate the last access to each memory location.
To view detected errors, choose Error Detection Display from the popup menu. In this case, the information on reading and
writing is not displayed.
Table 5.6 Access attribute and background color
Access attribute
Read
Written
Error
detected
Non-initialized memory (the location has
been read but nothing has been written to it
yet)
Non-inspected memory (a value has been
written to the location but it has not been
read)
No access
Background color
Green
Red
Yellow
Sky blue
White
CAUTION
The contents of the RAM Monitor window are acquired from bus access. Therefore, changes made to memory by access that
was not through the user program (e.g. writing to memory directly from external I/O) are not reflected in the RAM Monitor
window.
REJ10J1831-0200 Rev.2.00 Jun.1, 2009
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