[QuadList] NEC TBC

[Chill315 at aol.com]

This brings up some more cans of worms.
 
Is the sync on the tape NTSC EIA sync?  If not, the TBC may not  recognize 
the Vertical interval and memory addressing will be an issue.   Plus if not 
interlaced, I have no idea what will happen.  This is  experimental 
territory for me.
 
Next, you have to make sure that the TBC will process Black and White  
signals.  A multiple of 3.58 is used in all TBC's to generate a write  clock.  
Usually 4X but also 3X.  If there is not a color burst, then  the TBC has to 
generate a write clock.  Many times this is done with an  oscillator that is 
referenced to the H sync frequency.  Make sure that the  TBC can do this.
 
Wish you luck with this one.
 
Chris Hill
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