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A question about the DE1 dev kit Megawizard plug in manager.
I use Megawizard plug in manager to custom a .vhd file want to Read and Write DE1 SRAM . It seems its option for MEMsize can only upto 64KB, however the reference manual for DE1 said it has a 256KB memory.
Did I make some mistake when using the Megawizard plug in manager ?
BTW, does someone have a sample of DE1 Dev kit using SRAM as a VGA buffer to display a pic on DE1 monitor ?
Thanks a lot !
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SRAM on DE1 is off chip memory, you can't use altsyncram to interface to offchip memory. From the altsyncram documentation: "The altsyncram megafunction is available for all Altera device families supported by the Quartus II software". Hence, altsyncram can only target Altera devices. You could try the RAM initializer block in the MegaIP wizard:
http://www.altera.com/literature/ug/ug_altmem_init.pdf It can address 256KB BUT I don't know if it can initialize off-chip memory.
One way to initialize SRAM data with a pic. that comes to my mind is to use the DE1 control panel.
I will try and upload a sample of DE1 SRAM interface in the next few hours, assuming I have time :D.
Good luck.
Bart
Honored Contributor
