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Altera_Forum
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20 years ago

VGA Controller

This is a VGA Controller peripheral that can be used directly in SOPC Builder with Nios II. The controller contains its own free-running DMA engine that continually fills a FIFO with video data...
Altera_Forum's avatar
Altera_Forum
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20 years ago

Hi tomyaoyuan,

if you look at the altera docs about bit31 workaround and compare your sdram adress location of 0x0100000 with 0x8101a9c8 you will notice that bit 31 is set, meaning direct read without datacache ... you will not be able to have any memory or register beyond 0x7fffffff.

just think that bit 31 is always 0.

Regards.

Michael Schmitt