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Memory Data Register: Difference between revisions
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An '''MDR''' (Memory Data Register) is a theoretical buffer that explains the behavior of the [[open bus]]. Both [[PPU1]] and [[PPU2]] each have their own separate MDRs. The value contained by an MDR may decay over time, but the decay rates are unknown. | An '''MDR''' (Memory Data Register) is a theoretical buffer that explains the behavior of the [[open bus]]. Both [[PPU1]] and [[PPU2]] each have their own separate MDRs. The value contained by an MDR may decay over time, but the decay rates are unknown. | ||
=== | === Reference === | ||
* Anomie's open bus doc | * [https://www.romhacking.net/documents/194 Anomie's open bus doc] | ||
[[Category:SNES Hardware]] | [[Category:SNES Hardware]] | ||
[[Category:Buffers]] | |||