Re: organizacja pamięci w Atmega2561 - Grupy dyskusyjne w eGospodarka.pl

eGospodarka.pl › Grupy › pl.misc.elektronika › organizacja pamięci w Atmega2561 › Re: organizacja pamięci w Atmega2561

Path: news-archive.icm.edu.pl!agh.edu.pl!news.agh.edu.pl!newsfeed2.atman.pl!newsfeed.
atman.pl!.POSTED!not-for-mail
From: Sebastian Biały <h...@p...onet.pl>
Newsgroups: pl.misc.elektronika
Subject: Re: organizacja pamięci w Atmega2561
Date: Mon, 12 Sep 2016 19:25:47 +0200
Organization: ATMAN - ATM S.A.
Lines: 16
Message-ID: <nr6oet$gp$1@node2.news.atman.pl>
References: <nr6i30$pvp$1@node2.news.atman.pl>
NNTP-Posting-Host: 176-115-85-233.via.zamek.net.pl
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 8bit
X-Trace: node2.news.atman.pl 1473701149 537 176.115.85.233 (12 Sep 2016 17:25:49 GMT)
X-Complaints-To: u...@a...pl
NNTP-Posting-Date: Mon, 12 Sep 2016 17:25:49 +0000 (UTC)
User-Agent: Mozilla/5.0 (Windows NT 6.0; WOW64; rv:45.0) Gecko/20100101
Thunderbird/45.3.0
In-Reply-To: <nr6i30$pvp$1@node2.news.atman.pl>
Xref: news-archive.icm.edu.pl pl.misc.elektronika:705913
[ ukryj nagłówki ]

On 2016-09-12 17:37, sundayman wrote:
> Ponoć tam jest 256K flash. "Liniowo", jak stoi w dataszicie.

Nie, jest to okienkowane w dośc prymitywny sposób:

http://www.atmel.com/webdoc/avrassembler/avrassemble
r.wb_LD.html

Memory access is limited to the current data segment of 64K bytes. To
access another data segment in devices with more than 64K bytes data
space, the RAMPX, RAMPY, RAMPZ in register in the I/O area has to be
changed.

http://www.atmel.com/webdoc/avrassembler/avrassemble
r.wb_registers.html

http://electronics.stackexchange.com/questions/26682
/accessing-data-past-64k-boundary-on-atmega1280