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Altera_Forum's avatar
Altera_Forum
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15 years ago

MegaWizard RAM wont send data from address 0

hello, im having troubles reading data from megawizard's dual port ram (address 0 in particularly) heres what ive done so far: *initialized ram's contents to numbers incerementing by 1 (30h, 31...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

You left the wren open on your RAM-block, and it seems that is taken as a '1'. This overwrites the data at address '00h' immediately with '00h', and the expected '30h' will only be there for one single clock. Instead of using signaltap you could have simulated your design, and you would have noticed the 30h to 00h transition in your LCD data directly after startup.