thanx all for the replies,so far I found out:
1- that I was right when I thought that River Raid were slower"never forgot even after 32 years!!" ,thanx to CapitanClassic,for his note about the pal version,now after I checked the 20 roms I have, I found the one typical in speed,it is called: River Raid (unknown) (pal) .bin
so now ,the speed problem is resolved.
2- cording to RamrodHare SECAM colors were very limited,yes it was, colors seemed like washed out, less bold, that is why I felt the edges of the objects,ships etc,were smoother,blurry ...on the Pc seems pixilated!
so now ,my misunderstanding about the colors is cleared.
3- the joystck I had in the past has 2 shooter buttons on the right and the left , an was much better,comfortable than the one with only one red shooting button.
and the fact playing atari with keyboard,or gamepad is not similar to the joystick original experience,so one must find a joy stick similar to those original I had before.. and I can't have old one ,isn't available where I live !!
the problem with the joystick is that,(though it has great options of buttons)it is not similar to the old stick , for example ,while the old one all what you need in order to move left or right ,is to move the handle very short move left or right till it press against the hard end and then moves...
the joystick I have it moves at the least movement ,even if you don't press the hard end... and the distance between the handle and the hard end "left or right" a large one... that is exactly my problem....