XPLINK considerations
- If the environment being initialized is to be an XPLINK environment
then the first program in the PreInit table must be an XPLINK module.
- If there is no entry in the PreInit table or if the first module
is a non-XPLINK program, a non-XPLINK environment will be initialized.
- It is possible to change the environment from a non-XPLINK to an XPLINK environment
when doing a call_main. For more details, see call_main.