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2024-08-17 06:10:46 UTC
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Dave Anderson on Nostr: ... Damnit, and the ECP5-25 only has 114KB of block RAM if you're using power of two ...

... Damnit, and the ECP5-25 only has 114KB of block RAM if you're using power of two widths. I guess that's broadly okay because I can use distributed RAM to make up the balance and claw my way up to 128K, but... damnit, the 128K is in there, just in the most annoying possible shape that I can't use.

Unless I instantiate 18-bit RAM and implement byte writes as a read-modify-write cycle... 2 cycle writes and 1 cycle reads, hmm...