//top\\ Download — Epsxe 000.mcr

It is exactly 128 KB , which matches the standard storage capacity of an original PS1 memory card.

The .mcr extension stands for "Memory Card" and is essentially a raw dump of the data found on a real card.

First, the technical answer. An .mcr file is a standard PlayStation memory card image. ePSXe traditionally numbered these cards 001.mcr (Slot 1) and 002.mcr (Slot 2). So where does the 000 come from?

First, let’s demystify the filename.