To convert between (typically used by ePSXe) and (used by MemCard PRO and some RetroArch configurations) PlayStation 1 memory card files, you often only need to manually rename the file extension. These formats are generally identical 128KB raw data dumps of a virtual memory card. Conversion Methods Method 1: Manual Renaming (Simplest)
Ensure the filename matches what your emulator expects (e.g., DuckStation often requires an 2. Using MemcardRex (Most Reliable) If renaming doesn't work, use a dedicated manager like MemcardRex to ensure the data is parsed correctly: MemcardRex File > Open and select your
current_offset += (chunk_len + padding_needed) // 4096 mcr to mcd converter
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RetroArch often wraps standard memory card data in this format. Download MemcardRex from its official repository. To convert between (typically used by ePSXe) and
Here’s a sample review for an (depending on whether it’s a file conversion tool, a plugin, or a software utility):
| Error Message | Cause | Solution | | :--- | :--- | :--- | | NullPointerException | Corrupt biome data in an MCR chunk | Use Amulet Editor to delete that specific chunk. | | World loads but is blank | Player data saved in old .dat format | Copy level.dat from a new world over the old one (loses player inventory). | | Sea level is weird | Legacy water rendering | Run the converter with --fix-water flag. | | Game crashes on entity | Old mob with invalid NBT tags | Use NBTExplorer to delete the Entities list in the problematic region. | Using MemcardRex (Most Reliable) If renaming doesn't work,
Different emulators use different file extensions to represent the 128KB "raw" data of a PS1 memory card: are the standard format for the ePSXe emulator.