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Altera_Forum's avatar
Altera_Forum
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15 years ago

VGA display mode

hi: in the DE2 demo,there is a "VGA_Param.h" file ,in this file,pixel display frequency is 25MHz,I want to replace it of 50MHz,so I think the Horizontal Parameter and Virtical Parameter should...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

SebastienG,thanks~

now,I can get image in the VGA,I donnot understand why ,but it can display , so I am very happy!

but the time of X_START

("X_START = H_SYNC_CYC+H_SYNC_BACK" )seems not enough,it eats my active image,when I add it to" H_SYNC_CYC+H_SYNC_BACK+120",then I get a unwounded image,I think maybe my screen does not support my video parameters,so I want to ask the reasons here！~