INIT _BootStart

[collapsar]

Hi,community

It is not said that INIT _BootStart is the same as VECTOR 0 _BootStart, because there is also VECTOR 0 _BootStart in the file（project.prm，Bootloader_S12X，AN4258SW）, so I will comment out the INIT _BootStart, but the Error Link Error: L1115: Function _Startup not found, why?

And about INIT _BootStart，I found out ：

If I comment out the INIT _BootStart and add the start12.c file of the other project to this project, there will be no errors to compile again. What does the INIT keyword do?

[ZhangJennie]

Hi,

in prm file,this line of code is to define and initialize vector table.

VECTOR 0 _BootStart

Above code defines function _BootStart at reset vector 0. But it can't be used as application init entry point.Command INIT is needed instead.

INIT command defines the initialization entry point for the application. The INIT command is mandatory for assembly application and optional otherwise. It cannot be specified more than once in the prm file.

in Bootloader_S12X, function _BootStart is defined in assembly file. So INIT _BootStart is mandatory in prm file. If you remove it, application will not find the application entry point.

Have a great day,
Jennie Zhang

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