9.2.11 --fill-upper value

Set fill value for upper byte of data.

Use value as the upper byte (bits 16-23) when encoding data into program memory. This option affects the encoding of sections created with the psv or eedata attribute, and also the data initialization template if the --no-pack-data option is enabled. If this option is not specified, a default value of 0 will be used. On dsPIC33A devices, this option will be ignored.