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Altera_Forum's avatar
Altera_Forum
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16 years ago

Addressing in hex file

Hello, I currently design a system with SOPC based on the Nios II processor. I checked the hex file generated by the Nios II IDE after compilation. At the beginning I have the following : ...
Altera_Forum's avatar
Altera_Forum
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16 years ago

lets have a look at this line

:20000800008400141000003310BFF80400BFFD1606C00074D EC0001406800074D690B1144F

:20 means 32 Bytes length

0008 means 8 bytes(words) but it is 32bit data format so 4byte per word x8=32

00 record type data record

now you have 64 hex digits what give you the 32 bytes

008400141000003310BFF80400BFFD1606C00074DEC0001406800074D690B114

4F 2's complement of the checksum

as the data width is 32 bit the adr needs to be incremented by 8 with each line

hope it's clear otherwise ask