> NES emulation has been held back for years by people misremembering what SMB1 looks > like on real hardware > > https://www.youtube.com/watch?v=FynvXHZ3DZE > > (It's a TV commercial for SMB2J, but SMB1 and SMB2J use exactly the same palette) > > Yes, the sky really is purple in SMB1. SMB2US is the one with the pure blue sky.
How the color for that particular palette value is interrupted, through the Sony CXA2025AS US decode matrix, is blue though. This is not from memory, but with actual results under various CRTs.
From the Sony CXA2025AS US decode matrix you receive blue skies under SMB1 - proven when applied accordingly; no (faulty) memories required
P.S. We could try (other) TV commercials too though: https://www.youtube.com/watch?v=sSgTB-tKrNk
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