Mark wrote: > Regarding the not-supported PAL thing. In reading specs for several things > like this (and PC TV tuner cards), they often state that a wide range of > video standards are supported. However, this usually refers to the range of > models which are available. Any given unit may only support one standard. I had a BT848A based TV card myself, and it was compatible with PAL and NTSC equipment. It was already one of that low cost cards with only one single clock crystal, but starting with the 848A chip they have an internal PLL that can produce all needed frequencies from a single crystal. Older cards with the BT848 needed two crystals, so low cost cards with only one crystal were either PAL-only or NTSC-only. On newer cards it is simply a matter of software. My card had a bad bug in an early software version that did not allow proper handling of the SVideo input, all colors were wrong. Composite worked fine, though. If none of them works in color, it might be worth a try to readjust the color carrier frequency of the computer: there is an adjustable pot or cap near the VIC-II chip, often readjusting that helps with some equipment. For example, my 1702 and 1084 monitor display color pictures for all of my PAL-Commodores, but my Sony TV set is very picky about the correct frequency and I have to readjust some of my machines to work with that TV. I can imagine it is the same with TV cards or scandoubler devices, since all of them work with digital video processors. I think I already reported this, but I also have a scandoubler device, a noname (at least nobody would recognize it) TV tuner box for VGA monitors. It has inputs for antenna, composite video, s-video, VGA, sound, and outputs for VGA, sound and composite video. It does not convert VGA to composite of course. I am quite satisfied with that device, colors are very stable, but naturally the pixels in horizontal position have interpolated color values, because the pixel clock of the device does not match the pixel clock of the C64. But that doesn't matter, I don't see it anymore. Vertically the scanlines are doubled, and this gives the display that well known look of low-resolution VGA modes as they were popular for so many years in PC games. It also displays both PAL and NTSC signals if they're applied to the composite or s-video input, but it does not like nonstandard video timings with more than 60Hz refresh rate. But I expected that :-) Nicolas - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail firstname.lastname@example.org.
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