9.9 Compiler-Specific Type Qualifiers

The MPLAB XC-DSC C Compiler supports special type qualifiers, all of which allow the user to control how variables are accessed.
Table 9-7. Qualifier Support by Architecture
QualifierdsPIC33C/E/F, dsPIC30dsPIC33A
__psv__See section 9.9.1Not supported, silently ignored
__prog__See section 9.9.2Not supported, silently ignored
__eds__See section 9.9,3Not supported, silently ignored
__pack_upper_byteSee section 9.9.4Not supported, silently ignored
__pmp__See section 9.9.5Not supported, ignored with error
__external__See section 9.9.6See section 9.9.6