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From: zhanglei459 <zhanglei459@gmail.com>
To: u-boot@lists.denx.de
Subject: [U-Boot-Users]  Can CPU write video memory directly?
Date: Tue, 20 May 2008 06:54:14 -0700 (PDT)	[thread overview]
Message-ID: <17340898.post@talk.nabble.com> (raw)


Hi all,
      Now I am debugging video chip MB86297A.Reference to hardware manual,I
have configured PCI registers ,Carmine Control registers and DRAM Control
registers under U-boot , other modules registers have not been configured.I
dont know how to verify DRAM is configured correctly. When I "md" video
memory,they are all zero,and after I "mm" video memory,they are "md" still
display all zero .Are DRAM Control registers configured wrong? Does CPU
modify video memory?
    Thanks!
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View this message in context: http://www.nabble.com/Can-CPU-write-video-memory-directly--tp17340898p17340898.html
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             reply	other threads:[~2008-05-20 13:54 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-05-20 13:54 zhanglei459 [this message]
2008-05-23 14:49 ` [U-Boot-Users] Can CPU write video memory directly? Detlev Zundel

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