There are only these methods:
You need an original PS1-Disc and a PS2-Version SCPH 500xx and up, or a PS1-Swap-Disc.
Only a preview is available and there is no sound in it yet,...
Don't expect games to run, even thought it's compatibility seems to be quite good for a preview.
PS2 V7/DMS3 V2 (FW:2.4b7); Seagate Baracuda 200GB
PS2 V7/CC1.0 (FW:34 hacked v2 BM:2.1.6); Maxtor DiamondMAX9 PLUS 160GB
PS2 SCPH-30004R; NoMod+NoLaser
3xSony MC 8MB
MAX/Datel 16MB with Boot-CD
Custom FMCB 1.8b+ Beta-Build, my AIO 0.5, Sony&xRhino-Linux