<Dd> Up to 60 kilobytes of program ROM . Smaller ROMs start at higher addresses . The last 16 or 32 bytes are interrupt vectors . </Dd> <P> A few models include more than 2048 bytes of RAM; in that case RAM begins at 0x1100 . The first 2048 bytes (0x1100--0x18FF) is mirrored at 0x0200--0x09FF for compatibility . Also, some recent models bend the 8 - bit and 16 - bit peripheral rules, allowing 16 - bit access to peripherals in the 8 - bit peripheral address range . </P> <P> There is a new extended version of the architecture (called MSP430X) which allows a 20 - bit address space . It allows additional program ROM beginning at 0x10000 . </P> <P> The' 5xx series has a greatly redesigned address space, with the first 4K devoted to peripherals, and up to 16K of RAM . </P>

3. how many address words can the msp 430 address