On Fri, Jan 13, 2017 at 10:47 AM, Corey Cohen <appleco...@optonline.net> wrote: > So I have a friend who is originally from the U.K. He has his old BBC micro > from when > he was a kid and wants to be able to use it here in the states. His parents > threw out his old TV in the U.K.
There was actually an NTSC version of the BBC micro. I think you had to fit a different colourburst crystal, change a link to disable the phase switching of one of the colour signals (which is what PAL means, of course) and a different operating system ROM to reprogram the 6845 for US rates. The last is probably the hardest. But anyway... > > Is there a way to use a BBC Micro PAL version with a modern US LCD TV? Do > some brands of modern > TVs support both NTSC and PAL? Let's assume he may need to grab video before > the modulator. I don't know about US TVs, but a lot of UK TVs support NTSC video. You have 3 video outputs on the Beeb : UHF RF. This is the old UK analogue TV standard on what was channel 36. PAL encoded Composite (on a BNC socket). This is UK scan rates, and monochrome by default. Fitting a link on the PCB will get PAL colour there. RGB (on a 6 pin DIN socket). TTL levels, 3 colour signals (so 8 possible colours total) + sync. If you can find a way to use that, do so. It gives by far the best picture. -tony
