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The 8051 IDE combines a text editor, assembler, and software simulator into a single program. All components needed to develop 8051 programs are available and controllable from this single IDE running on Windows 95.

Enter and modify the program source code from within the built in editor. Then assemble the source code by selecting the Assemble command. If any errors are located, double clicking on the error listing loads the appropriate source module and the cursor is placed on the line containing the error. Fix the error and move to the next error (if any) by double clicking the next error in the list. Once all errors have been fixed reassemble the code.

After successfully assembling the source code use the simulator to step through your program. You can watch registers, flags, ports and memory locations change as your program progresses.

In addition to the predefined watch windows (register, internal memory, direct memory, etc) you can create a custom watch window. In this window add entries for any of the 8051 resources. Using the simulator you can see the flow of your program. You are able to verify that it operates as intended. If it does not then return to the editor, reassemble and back to the simulator.