In SX Microcontrollers, SX/B Compiler and SX-Key Tool, g_daubach wrote:

Ray,

you can use the "device - read - save hex", and later the "device - load hex - program" procedures for saving/restoring the original contents of the SX chip provided that it was not programmed with the DEVICE PROTECT option.

Nevertheless, you have the original source code on the floppy that came with the kit. To verify that the source code matches the contents of the SX program memory, hook up the SX-Key to the device you want to check. Next, load the matching source file, e.g. SX1.SRC, do a "Run-Assemble", then do a "Run-Device", and click "Verify". If there are no errors are reported, you can be sure that the code generated from the source file is identical to the code in the SX program memory.

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