ps2 identification

[chulo_d]

I know I have a Ver.4 date code 1b ps2. I would like to know how do I know what bios I have( 010, 020, gapped, non-gapped).
Where do I look to find it?
Can I tell my the model number or by opening it up

Thanx

[SledDog]

Only by opening it up...

[charlie_ps2]

.... where you'll find an 030 gapped BIOS

[chulo_d]

Thanks for the quick replies guys, but what am I looking for when I open it up?

[liquidreams]

open to the mobo, theres writing with the nubers, ya cant miss it.

[chulo_d]

sorry if it seems like im not getting it
so when I open the console and look at the motherboard it will actually say something tike 030 gapped bios?

[gokuguy]

Originally posted by liquidreams
open to the mobo, theres writing with the nubers, ya cant miss it.

Actually it's quite easy to miss. Look for a recangular black chip with a 0xx printed on it in small letters.

[chulo_d]

Actually it's quite easy to miss. Look for a recangular black chip with a 0xx printed on it in small letters.

Thanks,
Now how would I be able to tell if it is gapped or not?

[gokuguy]

Gapped BIOS would look something like this:
|||||____|||||
| |
|||||____|||||

Um...thats a bad example, but it will have a large space in between the legs(small silver pins) of the chip.

[tify]

from talking to various guys at various times it has been my experience that almost all V4 1B have a Gapped Bios (030), although this theory could be wrong. but ive never seen anyone having a V4 1B having a non-gapped bios.