The second case to consider is the boot from the embedded ROM. Our SAM9 MPU Boot ROM provides several applications such as:  - A 1st Level Bootloader called NVM Memory Bootloader that will call a 2nd one depending on the customer application. - An In-System Programming (ISP) Firmware Solution called SAM-BA Boot to program easily the external memories thanks to Microchip’s free ISP software called SAM-BA GUI.