Hex file downloads

[Ryan M.]

Does anyone out there know how the hex files relate to the actual instruction set (IE, what's specified in section 24 of the PIC datasheet) the controller runs? I already know the hex file format, but I want to basically know how the controller takes that and translates it into the instructions that it runs.

If you don't get what I mean/want... think harder.

[sciguy125]

The data in the hex file is the instructions that the processor reads.

Take the following instruction for instance:

clrf 0x2C

That tells the processor to clear address 0x2C (set it to zero). According to the datasheet (Table 24-1), that insturction is the following in binary:

0110 1010 0010 1100

in hex:

6A 2C

If you were to find that instruction in a piece of code somewhere, the hex file for that code would have 6A 2C whereever the instruction is supposed to go.

[Ryan M.]

Oh... duh (/me smacks self) I forgot about the arguments. I couldn't find any way any of the hex fit an instruction. (They were all too long...)

Thanks!