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84 Replies
- Altera_Forum
Honored Contributor
Hi all! I bought bemicro board last week,and I found that sram was not enough for my project .Now I want use IS62WV51216BLL not IS62WV25616BLL,but the datasheet of bemicro didn't give the pin number of A18, who can tell me what should I do ?
Thanks! - Altera_Forum
Honored Contributor
Are there any indications that A18 is connected to the FPGA at all? If not, you could try to solder it to an expansion connector pin.
- Altera_Forum
Honored Contributor
who can give me the linux driver of bemicro and schematic ? thanks!
- Altera_Forum
Honored Contributor
I have the BeMicro and everything works well, including my own designs. However, I want to make the configuration permanent.
I added the EPCS16SIBN device, cut the trace 1-2 at B400 and added a jumper 2-3. Pretty much just like the instructions. However, the built-in programmer is for JTAG and can not program the EPCS16 which is a serial device. What do I need to buy to be able to program the EPCS16? Will the FPGA then load directly from the EPCS16? Richard - Altera_Forum
Honored Contributor
You have to program the EPCS device indirectly through the FPGA. There are two methods for doing this:
1 - Use the Quartus II programmer and create a JIC file. Then program the EPCS using the JIC file. What this will do is download a temporary image into the FPGA with enough intelligence to then program the EPCS. 2 - Include the EPCS controller core in your SoPC system. Then with your FPGA image programmed into the FPGA, you can program the EPCS device with the nios2-flash-programmer. Jake - Altera_Forum
Honored Contributor
Jake,
Thanks! It works perfectly! One last thing (well, probably not the very last), is there a way to get the FPGA to load from the flash without disconnecting and reconnecting to the USB port? I sure hope I didn't miss a check box or push button... Richard - Altera_Forum
Honored Contributor
You can use the remote update core. For Cyclone III there is a remote update controller in SoPC builder that allows you to reload the FPGA after changing the configuration.
Jake - Altera_Forum
Honored Contributor
You have a Quartus Programmer option "Initiate configuration after programming" for this.
- Altera_Forum
Honored Contributor
Found it! I just knew it was going to be something I overlooked. It's nice that the setting is sticky across projects.
Thanks Richard - Altera_Forum
Honored Contributor
--- Quote Start --- Are there any indications that A18 is connected to the FPGA at all? If not, you could try to solder it to an expansion connector pin. --- Quote End --- I looked it up. A18 on a 512x16 part is the same as CE2 on the existing part. You should be able to drop in a 512x16 with no board modifications - but use the pin assigned to CE2 in the manual as A18 instead. I was looking at this part: http://www.issi.com/pdf/61-64wv51216.pdf but I believe that is part of the JEDEC spec.