AX51: INITIALIZING XDATA MEMORY

Information in this article applies to:

• C51 Version 8
• AX51 Version 3

QUESTION

During manufacturing, we want to pre-initialize FLASH memory located in XDATA memory space. If this was CODE space I would use DB assembler statement to do this. How do I do this for XDATA memory?

ANSWER

With the AX51 Macro Assembler, you can use the DB assembler statement in the XDATA and HDATA memory space. For example:

?XD?MyInit   SEGMENT XDATA
             RSEG    ?XD?MyInit
Values:      DB      1,2,3,4

             END

To generate a HEX image, make sure you invoke OHX51 with the correct address range. For example:

OHX51 MyProject RANGE (X:0 - X:0xFFFF) H386

MORE INFORMATION

• Refer to XCROM in the Cx51 User's Guide.

SEE ALSO

• µVision DEBUGGER: IMPORTING HEX FILE INTO XDATA MEMORY

Last Reviewed: Wednesday, January 10, 2007