puzzled to what mod is in machine.

[spedmetal]

Originally Posted by HANS_COBBO

PS1 original/backups and movies boot if you have the ps2 in standby, then hold the reset till the blue eject appears, and quickly tap the reset button again,

It sounds like you have a Messia 2 Pro V2.0. The V2.0 has a boot sequence like this, by tapping reset a number of times: i.e. 1 = default ps2 mode, 2 = psx mode, 3 = *special mode*, 4 = chip_disabled.

Originally Posted by HANS_COBBO

yet certain games are not optimized i.e. us/ntsc Tekken 3 has double borders and runs in 50Hz. If it was a M2 chip, i'm sure this title would run full screen 60Hz mode.

Ps2 - Cd/dvd original/backups require a single tap of the reset button.

Wrong, the Messia chips have never done anything to correct for the video out signal, unless you account for the color fix wich has nothing to do with the messiah but is a simple jumper on the PS2's motherboard its self and can be done with any chip. But as for correcting the video frequency the Messia does nothing!