weird ps1 boot problem

[The Squig]

Hi.

I Have a japanese v10 ps2 and I think there is a smartchip pro (or a clone of that chip) installed. Im not 100% sure of which chip I have but it does remove the ps2 logo and the console was purchased when the chip was popular.

back to the problem.

It boots ps2 games just fine, never had a problem, but when I try to load a ps1 game it just gives me a black screen and locks up.

Ive had my ps2 since febuary 2004 and Ive always thought that it was a problem with the chip but now im not to sure.

I just found out that hk silver's (factory pressed pirate copies) will boot. i also found that If I quickly swap the disk during the ps1 logo screen to another copy (or orignal), it will boot.

does anyone here know why this is happening?

I also have another problem.
all my ps1 games are black and white. i dont have this problem with ps2 games (ive tried both pal and ntsc). plz help me.

I also want to clarify that I want to load original and backup copies, not hk silvers.

edit: Sorry for the english, im not a native speaker but I can write better than this.. just not at 5am.