You need a console with a Parallel I/O port (models SCPH-1001 through SCPH-7501). Newer "Slim" PSone models removed this port.
Your PS1 must have a physical modchip installed or use a soft-mod exploit (like TonyHax or FreePSXBoot ) to read burned media. Ps1 Vcd Games Download
: This is a homebrew emulator for PS2 that requires PS1 games to be in the .VCD file format to run from a hard drive or USB. You need a console with a Parallel I/O
Key features include:
Load the downloaded .cue file of your interactive VCD game or VCD player software. Ps1 Vcd Games Download