I made this tool that allow you to manage your game saves from a Playstation 1 Memory Card on your Windows PC.
You can:

PSX Memory Card Manager is a very simple Playstation memory card image manipulation tool with a GUI. Combined with the right hardware, transfering data to and from a real memory card is also possible. This software was intially Linux-only but it now also runs under Windows. Oct 24, 2012 'Playstation BIOS Download'. Once you have downloaded it, place it into the BIOS folder. Now that is all set up, We will set up the memory card. First, open up pSX and go to File-Configuration. Once it us Open, click on the 'Memory Cards' tab. And click on the '.' Button underlined below. The PSX emulators: ePSXe, PCSX, SSSPSX, PSX (psxfin), PSXeven, Emurayden& Xebra) - The Audio, CDrom, Gamepad & Video plugins. Savestates needed to run games in some emulators. PEC & His latest codelists - Epsxecutor - Utilities. Cheat Engine files. Memory cards saves. Playstation Games Manuals. Playstation Memory Card (MCR) Savestates. Gramblr free for mac. I recently set Retroarch up to use Mednafen PSX core. I had a few technical issues along the way, but it was finally fixed with a manual update of the core. However, now mednafen refuses to recognise memory card files (.mcr) in every game. It's creating the.mcr files whenever I create a save in game, in the same directory as the roms.

Read from or write to a real Playstation 1 Memory Card using the official Playstation 3 Memory Card USB Adaptor.
Load a Memory Card from multiple file format (*.mc *.mcr *.mcd *.mcx *.gme)
Save a Memory Card to *.mc file format.

Psx Memory Card Download Mcr

Export a single save file to *.mcs file format.

Psx Memory Card Rom

Import a single save file to the currently loaded Memory Card from *.mcs or *.bin file format.

Psx Memory Card Rom

Delete a single save or create a brand new formated Memory Card.
Provided with a Playstation 3 Memory Card Adaptor USB driver compatible with Windows XP, 7, 8, 10, either 32bits or 64bits !

Psx Emulator Memory Card File

Download and enjoy here : http://onorisoft.free.fr/psx/psx.htm
French video tutorial here:
https://www.youtube.com/watch?v=1_ZFHSjXC3s