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<whitequark>
i might actually use those serdes for something
<whitequark>
or not
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<pepijndevos>
How much memory is there in the ice40?
<whitequark>
depends on the chip
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<pepijndevos>
Well, not enough hahah I think those are 4Kbit blocks? Info: ICESTORM_RAM: 44/ 30 146%
<pepijndevos>
It also has ICESTORM_SPRAM though... hmmmm
<whitequark>
yeah 4 kbit
<whitequark>
SPRAM is not initialized and not inferred by yosys
<pepijndevos>
awww okay
<pepijndevos>
And is there a way to use non-power-of-two amounts of bram?
<pepijndevos>
Ehhhh, I think it's just not going to fit. Time to find a bigger FPGA somewhere.
<whitequark>
you can use NPO2 amounts of bram just fine
<whitequark>
in yosys.
<whitequark>
not so much in vendor tools
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<pepijndevos>
ok, good to know
<pepijndevos>
But according to my calculations my code+data leaves maybe a few hundred 16-bit words if you absolutely pack all the brams, and then I still need 600 words of VRAM and a tile ROM
<pepijndevos>
So I moved back to the vendor tools on the gowin board that I'm documenting
<whitequark>
mhm
<whitequark>
i mea
<whitequark>
*i mean
<whitequark>
you have to use PO2 RAMs in icecube
<whitequark>
idk about gowin
<whitequark>
you could also instantiate spram
<daveshah>
Or even use SPI flash as a ROM
<daveshah>
depending on access rate
<whitequark>
yeah
<pepijndevos>
Well, in gowin there is enough bram that it works out
<pepijndevos>
(they use synopsys for synthesis, not sure if that only does PO2)
<pepijndevos>
So now the only thing left to fix is previous/next buttons on my gowin board and the code for it
<gruetzkopf>
i think by now it'd be cheaper to just use a ECP5 with serdes
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