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Add RZ-EasyFPGA A2.2 #123

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merged 5 commits into from Nov 25, 2020
Merged

Add RZ-EasyFPGA A2.2 #123

merged 5 commits into from Nov 25, 2020

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mogery
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@mogery mogery commented Nov 24, 2020

This is a relatively cheap FPGA dev board, often found on Aliexpress. It uses the Cyclone IV EP4CE6E22C8.

Some information regarding the pinout was taken from this repo.

whitequark
whitequark requested changes Nov 24, 2020
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Also, shouldn't perhaps more resources use Attrs(io_standard=)? (I'm not sure whether Quartus needs this or not.)

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mogery commented Nov 24, 2020 •
edited

Also, shouldn't perhaps more resources use Attrs(io_standard=)? (I'm not sure whether Quartus needs this or not.)

I don’t think Quartus needs them, they worked fine without the io_standard, but also I’m not very sure what to specify there and I don’t want to get it wrong and mess something up.

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also I’m not very sure what to specify there and I don’t want to get it wrong and mess something up.

If there is an SDC file provided by the board vendor, that would be a good place to copy things from.

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mogery commented Nov 24, 2020

also I’m not very sure what to specify there and I don’t want to get it wrong and mess something up.

If there is an SDC file provided by the board vendor, that would be a good place to copy things from.

There isn’t AFAIK.

@mogery
Lots of fixes, see description.
5bcc78e 
 * Changed name of reset button and added default_rst.
 * Added nCEO reserve override in toolchain_prepare.
 * Renamed lcd to lcd_hd44780, merged data lines into one subsignal, and changed direction to I/O.
 * Changed 7seg to use Display7SegResource + display_7seg_ctrl.
 * Added labels to the I2C resources.
 * Added forgotten Buzzer resource.
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mogery commented Nov 25, 2020

also I’m not very sure what to specify there and I don’t want to get it wrong and mess something up.

If there is an SDC file provided by the board vendor, that would be a good place to copy things from.

There isn’t AFAIK.

Couldn't find it after a while of digging through their website. I'll try shooting them an email.

@whitequark whitequark merged commit b90a89d into amaranth-lang:master Nov 25, 2020
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Thanks!

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