ok so what if I buy one of these PAL amiga 1200 keyboard/computer things from ebay.uk. will I be able to plug it into my NTSC tv without video problems etc? or will I run into the same problems that I would find if I went with a PAL cd32?
I don't think you would have any problem with a PAL CD32 - Unless your TV is one of those old wooden console TVs with a record player built into the top, its probably going to support PAL video. its the NTSC CD32 I suspect you would disappointed with.
The A1200 and CD32 are essentially the same thing, except that the A1200 has an 23 pin RGB port and the CD32 has an SVIDEO port.
You'll run into the exact same sort of issues with an Amiga 1200 that you would with the CD32 if you use the composite video signal instead of the RGB port.
Most people use the RGB port connected to a scandoubler or Amigamaniac's SVIDEO adapter or a 15hz compatible monitor (such as 1084) or some other multisync. RGB also provides far superior picture than SVIDEO which is only slightly better than composite.
Both SVIDEO and composite mix signals together in order to use fewer wires, so the color signal is encoded. The RGB port leaves these signals separated.
NTSC video is 425 lines at 60 frames per second and the color signal is encoded at 3.6 mhz.
PAL video is 525 lines at 50 frames per second and the color signal is encoded at 4.4 mhz.
Both the A1200 and the CD32 can change refresh rate via software (which also changes the # of lines) but the color frequency the color signal is encoded at cannot be changed via software.
It does not matter if you are using a CD32 (with SVIDEO or composite) or A1200 (with composite), if you are running PAL unit in NTSC mode or a NTSC unit in PAL mode, you are going to have non-standard video signal.
I really don't know a better way to explain it. Good luck with whatever you decide....