How to correctly calculate address spaces?

Posted by user337308 on Stack Overflow See other posts from Stack Overflow or by user337308
Published on 2010-05-10T14:09:27Z Indexed on 2010/05/10 14:14 UTC
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address

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spaces

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registers

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msp430

Below is an example of a question given on my last test in a Computer Engineering course. Anyone mind explaining to me how to get the start/end addresses of each? I have listed the correct answers at the bottom...

The MSP430F2410 device has an address space of 64 KB (the basic MSP430 architecture). Fill in the table below if we know the following. The first 16 bytes of the address space (starting at the address 0x0000) is reserved for special function registers (IE1, IE2, IFG1, IFG2, etc.), the next 240 bytes is reserved for 8-bit peripheral devices, and the next 256 bytes is reserved for 16-bit peripheral devices. The RAM memory capacity is 2 Kbytes and it starts at the address 0x1100. At the top of the address space is 56KB of flash memory reserved for code and interrupt vector table.

What                            Start Address End Address
Special Function Registers (16 bytes) 0x0000 0x000F
8-bit peripheral devices (240 bytes)  0x0010 0x00FF
16-bit peripheral devices (256 bytes) 0x0100 0x01FF
RAM memory (2 Kbytes)                 0x1100 0x18FF
Flash Memory (56 Kbytes)              0x2000  0xFFFF

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