The header file <ina90.h> defines a number of intrinsic functions of general use for the AVR processor. This file is written to be compatible, and in some cases an enhancement of, the corresponding file in version 2 of IAR's Embedded Workbench for AVR (EWA90) product.
| Status register manipulation | |
| _CLI | Disable interrupts. |
| _SEI | Enable interrupts. |
| Miscellaneous functions | |
| _BREAK | Insert a BREAK instruction into code |
| _NOP | Insert a NOP instruction into code |
| _OPC | Insert an instruction into code |
| _SLEEP | Insert a SLEEP instruction into code |
| _WDR | Insert a WDR instruction into code |