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Writing loader isn't that difficult (CDTV CD controller is much more intelligent than CD32, CDTV can return 2048 byte "cooked" sectors. CD32 only returns raw 2352 sectors). Simple CD sector loader that takes sector number and then reads it using polled IO (I don't remember if CDTV must use DMA or if PIO is possible) is fine for this purpose?
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Toni I'm currently analyzing Rob Northen/Psygore CD32 loading code (that i fixed following your recommendations after you found a buffer wrapping bug). I also have a copy of the resouced cdtv.device, but if what you mean by your question is
"would it be useful if I wrote a track loader for CDTV drive, hardware banging style ?"
The answer is of course yes!