> On Jun 16, 2015, at 09:10 , tony duell <a...@p850ug1.demon.co.uk> wrote: > You would, of course, not know which track it was reading, so you would have > to output 2 blocks, one on > each track, at once. And how would you detect it was writing? Look for an > extra signal at the coupling head > or something?
That seems to me like it would be the trickiest part. The TU58 schematic appears to indicate that there are separate erase head gaps (not on a separate head like in audio cassette drives), so maybe those could be monitored to detect when a track is being written? Of course, that probably means that a custom 4-gap head would need to be made with gaps matching the two read/write and two erase gaps (and a concave surface, too, rather than recycling some audio tape head with suitable geometry to line up with just the read/write gaps. -- Mark J. Blair, NF6X <n...@nf6x.net> http://www.nf6x.net/
