Yahoo Groups archive

AVR-Chat

Index last updated: 2026-04-28 22:41 UTC

Message

Re: [AVR-Chat] Reading tables from flash

2006-09-29 by David VanHorn

>
>
>        ldi ZH, high(TABLE*2)
>        ldi ZL,  low(TABLE*2)
>
>        lpm temp, Z+
>        lpm temp, Z+
>        lpm temp, Z+
>        lpm temp, Z+
>        lpm temp, Z+
>
>        Question:
>
>        - What is the current value of ZH:ZL?


You could just walk that through the sim and see how it works.
Z increments byte by byte, not word, so it's 2.5 words up from the start of
TABLE

When you set Z, you're loading in Table*2, and the LSB selects which byte
you get, 0=low, 1=high
This is why we have the ELPM instruction, for the larger chips.


[Non-text portions of this message have been removed]

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.