Re:Celebrating the first NES Tetris game crash
by hcs on Friday December 22, 2023 @10:38PM
(#38741409)
No BCD support on the specific chip used in the NES, though.
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Re:Celebrating the first NES Tetris game crash
by tom_ on Saturday December 23, 2023 @12:04AM
(#38741772)
Looks like it might be doing the bcd by hand. See, e.g., L93C7 (and following code) in the disassembly here: https://github.com/CelestialAmber/TetrisNESDisasm