Hi friends
Maybe I am misunderstand your question, All links USB to Nand interface (writer and reader) not JTAG. Also I am find SEGGER NAND FLASH EVAL board like in the links but I do not know what it's price. Progskeets JTAG connection only for ACTEL bitstream programming with INJECTUS Programmer(I am not have and use any jtag programmer). Progskeet read and write over usb port like others in the links. I do not know any nand programmer using Jtag interface. Only I know XBOX360 users use jtag for nand programming but only works on xbox360 jtag hardware(Spesific for xbox360 South Bridge Chip) it is not universal (NAND-X or NANDPRO also pic based simple versions). If you need nand read write over usb to jtag adapter + jtag to nand interface; It would be too complicated. I still need cheap x16 nand solution and I am search time o time but nothing found yet. These links cheap usb to nand programmers only I know.If you need jtag I do not know, sorry. If you search in google "diy nand flasher" (reader, writer, programmer) maybe you find about JTAG nand programming solution.