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nice hint by Jens Arnold: using RAS Down Mode for the DRAM makes the box 10-15% faster

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@4373 a1c6a512-1295-4272-9138-f99709370657
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Jörg Hohensohn 2004-03-13 11:44:48 +00:00
parent e8db003465
commit 4cee740afa
1 changed files with 2 additions and 2 deletions
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4
firmware/system.c
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@ -485,8 +485,8 @@ void system_init(void)
/* NMI level low, falling edge on all interrupts */ /* NMI level low, falling edge on all interrupts */
ICR = 0; ICR = 0;
/* Enable burst mode on DRAM */ /* Enable burst and RAS down mode on DRAM */
DCR |= 0x1000; DCR |= 0x5000;
/* Activate Warp mode (simultaneous internal and external mem access) */ /* Activate Warp mode (simultaneous internal and external mem access) */
BCR |= 0x2000; BCR |= 0x2000;