m wondering at this point would it be beter for me to go a1 or get a new busboard considering i want to go to os4?
OS4 will run fine with the hardware you already have, You don't need the Mediator.
what would the best hardware to go for if i were to get an a1 say if i sell my amiga 1200 stuff to pay towards an a1?
If you sell your current kit you could be waiting a long time before you can spend the proceeds on OS4 capable hardware.
what specs of hardware are available in the a1 systems and is there support for divx etc as i curretly use a modified xbox for my media as my a1200 is not fast enough.
A1 SE had an a 600Mhz G3 and is the most probelematic AmigaOne.
A1 XE had either an 800Mhz G3 or G4.
Micro A1 had a 800Mhz G3.
All should be upto the task of running DivX files using DVplayer or Mplayer, G4 is best because it has altivec.
what realistically would i get for my ppc card and bi vision
Quite a bit of money right now, check these ebay links.
BPPC 160 040 SoldBPPC 160 040 Selling