Ways to get into menu of bios on modchip

[ghaldos]

Hey everyone,
I never knew about the bios options of my modchip till I accidentaly got into it today and I don't know how. As I do not know the make or model of my modchip unless I take the ps2 apart I was wondering if anyone knew of typical ways to get into the bios of the ps2 modchips?

I tried holding all buttons at startup, holding a number of buttons for a few seconds but could not figure it out.

Thanks in advance to anyone who has any ideas.

[ghaldos]

I just figured out what modchip I have it's a xeno ps modchip.

[homedog]

before turning the ps2 on press Cross and Triangle then start your ps2 and you should see the config menu!