14.17.2 Data Memory Window

The Data Memory window displays locations in the range of data and/or program memory for the currently selected 32-bit device.

Figure 14-57. Data Memory Window with Content

Data Memory Window Display

You may specify how memory is displayed in the window by selecting from the Format drop-down box on the bottom of the window.

When using a hardware tool for debug, some registers may show an R for each nibble of data to represent a reserved resource.

Data Format

This window will have the following columns:

  • Address – Hexadecimal address of the data in the next column.
  • Data Blocks – Hexadecimal data, shown in 4-byte blocks.
  • ASCII – ASCII representation of the corresponding line of data.

Code Format

This window will have the following columns:

  • Line – Reference line number corresponding to memory address.
  • Address – Physical hexadecimal address of the opcode.
  • Opcode – Hexadecimal opcode, shown in 4-byte blocks
The opcode that is highlighted represents the current location of the program counter.
  • Label – Opcode label in symbolic format.
  • Disassembly – A disassembled version of the opcode mnemonic.

Data Memory Window Icons

Icons are located on the left side of the window.

Table 14-60. Data Memory Window Icons
Icon Icon Text Function
Refresh by Read Device Memory Same function as the Debug toolbar Read Device Memory icon - uploads device memory to the MPLAB X IDE.
Find Specify a string to find in the window. Select to match whole word or case.
Find Next Find next instance of string from Find.
Find Previous Find previous instance of string from Find.
Go To Go to specified line number or address.

Data Memory Window Menu

Right click in the memory window data area to pop up this menu. Not all items may be visible for all 32-bit MCUs.

Table 14-61. Data Memory Window Content Menu
Item Description
Virtual Address Select virtual addresses for display. See your device data sheet for details.
Physical Address Select physical addresses for display.
Symbolic Mode Code Format Only

Display disassembled hex code with symbols.
Hex Width Display Data Format Only

Set the hexadecimal display width.

(Options depend on the device selected).

Example:

One byte, e.g., 00 01 02 ... 0E 0F

Two bytes, e.g., 00 02 04 ... 0C 0E

Four bytes, e.g., 00 04 08 0C
Fill Memory Fill memory from Start Address to End Address with the value in Data.

Specify other options in the Fill Memory dialog.
Go To Go to the address/function specified using the Go To dialog.
Go To Source Line Code Format Only

Go to the corresponding line in source code in the editor.
Find Find text specified using the Find dialog.
Output To File Write the displayed window contents to a text file using the Output to File dialog.
Import Table Import tabular data from a file into a Memory window using the Import Table dialog.
Export Table Export tabular data from a Memory window into a file using the Export Table dialog.
Print Print the contents of this window using the Print dialog.
Note: If you have a large memory device, the number of pages printed can become very large. A suggestion is to print the window contents to a file (Print dialog, General tab, Print to File check box) and then select which pages from the file you need to print.
Adjust Table Columns Adjust the columns automatically.