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Altera_Forum
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9 years ago

Error (15684)

Hi to all When compiling a design on EP2C20 I have this error : Error (15684): M4K memory block WYSIWYG primitive "video:inst9|vdp_vram:U_VRAM|altsyncram:r_rtl_0|altsyncram_1nm1:auto_gener...
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Altera_Forum
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9 years ago

Probably and old post... but ran into this same problem today.....I think the Error (15684) is related to the use of two clocks when using true dual port RAM.. see https://www.altera.com/content/dam/altera-www/global/en_us/pdfs/literature/ds/es_cycii.pdf on page.3.. Ive used the template method to stick the ram in my project then edited the template to drive the ram by the same clock and it seems that the synth passes ok...still testing it

cheers