If the Y pointer stores the address of the byte in memory it points to, how is the value stored at the location accessed?
.dseg ; Define a data segment
Cap_string: .byte 5
main:
ldi yl, low(Cap_string)
ldi yh, high(Cap_string)
0
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1 Answers
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The instruction to read from the location that a pointer is pointing to is called "Load Indirect" and looks like this:
ld r5, Y
In the example above, r5 can probably be any register, and Y is the name of the pointer, and can be replaced with X, Y, or Z.
To write to the location, use the "Store Indirect" instruction, which is written like this:
st r5, Y
You can find more information in the AVR Instruction Set Manual.
