How do PS1 and/or PSP games look like on the PS Vita? Do they fill the screen?

Also since the PSP had only one analog stick, for PSP games like Monster Hunter where they used the PSPs face buttons as a analog stick replacement - if I play them on the Vita, can I use the second analog stick? Or do I have to use the face buttons?

Will the games play the same as they did on the older system? Or will there be changes to conform to the new system?

What do PS1 and/or PSP games look like on the PS Vita? Do they fill the screen?

Also since the PSP has only one analog stick, for PSP games like Monster Hunter where they used the PSPs face buttons as a analog stick replacement - if I play them on the Vita, can I use the second analog stick? Or do I have to use the face buttons?

Will the games play the same as they did on the older system? Or will there be changes to conform to the new system?

How do PS1 and/or PSP games look on the Vita? Do they fill the screen?

Also since the psp had only one analog stick, for PSP games like Monster Hunter(and the like), where they used the PSPs face buttons as a analog stick replacement - if I play them on the Vita, can I use the second analog stick? Or do I have to use the face buttons?

Will the games play the same as they did on the older system? Or will there be changes to conform to the new system?

How do PS1 and/or PSP games look like on the PS Vita? Do they fill the screen?

Also since the PSP had only one analog stick, for PSP games like Monster Hunter where they used the PSPs face buttons as a analog stick replacement - if I play them on the Vita, can I use the second analog stick? Or do I have to use the face buttons?

Will the games play the same as they did on the older system? Or will there be changes to conform to the new system?