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That has a MOS 6502 core which was covered in the article.
by a_cardboard_box 3y ago
That has a MOS 6502 core which was covered in the article.
- flohofwoe 3y ago...which can be seen nicely here: https://floooh.github.io/visual2a03remix/ https://floooh.github.io/visual2a03remix/ The 6502 CPU is in the lower-right quadrant. (and here for comparison the 6502 on its own: https://floooh.github.io/visual6502remix/ https://floooh.github.io/visual6502remix/)
- rbanffy 3y agoIIRC, the rest of the die is the sound hardware.
- duskwuff 3y agoAnd the empty upper right corner was a fabrication test structure; it's missing in the simulation because it was completely isolated from the rest of the chip. You can see it in the die shots here: http://www.visual6502.org/images/pages/Nintendo_RP2A_die_shots.html http://www.visual6502.org/images/pages/Nintendo_RP2A_die_sho...