[02:06] <neufeld> I'm looking for some advice.  I've got an old Hauppauge PVR-500 that I was using to extract closed-captions from the SD output of my cable boxes, to make .srt files for my mythtv box.  I had to replace the motherboard on the mythtv box, and the new one won't POST with an ISA card in the slot.  Many years ago I bought a HVR-2250 as backup in case the PVR-500 failed, but when I unwrapped it I found it DOA, doesn't show
[02:06] <neufeld> up on the PCI bus.  I decided to try USB-based EZCap devices.  The first two were USBTV007 devices, cheap but useless.  So I went through the kernel source, and found that the CX231xx driver had VBI code, so I bought two of those, but v4l2-ctl can't talk VBI to them (kernel 4.9.159).  Next, I bought two arduino rigs and used them to pull out captions from line 21, but it seems that there's a pile of junk in the other
[02:06] <neufeld> field (the station name repeated over and over again), and the arduino doesn't have the precision to pull the field marker byte from the vertical timing reference, so I can't disambiguate the fields.  I'm looking for my next approach.  I see a few possibilities.  Maybe there's something I can do to activate VBI on the CX231xx dongles.  Maybe I can trick one of the dongles into overscanning, and I can parse out the
[02:06] <neufeld> VBI bits manually (I've learned more than I want to about CEA-608, which is what is coming out of the cable boxes).  Maybe there's another piece of hardware that I can be assured will work.  Maybe I can write patches for the CX231xx driver to enable VBI if that functionality isn't there yet.  Maybe I should buy another HVR-2250 from eBay and hope it works.  Maybe I should look for another MB with both ISA and
[02:06] <neufeld> PCIe-x16 slots.
[21:29] <neufeld> I just realized that what I was calling an ISA slot is really an older PCI slot for the PVR-500.  The rest of my query still stands, but it makes buying a new motherboard less tricky, if that's the recommendation.