According to the research by Eldar, TINY-H adapter has nTRST connected to ACBUS0 directly via a 100 Ohms series resistor. I think it's safe to assume the older TINY adapter does the same. See high-res photos at [1]. This patch should fix issues with JTAG for the case when nTRST is actually connected but is missing from the config. [1] https://wikidevi.com/wiki/Olimex_ARM-USB-TINY-H Change-Id: Iaaee7be30536ebb502802d38b82cd9573408f854 Reported-by: Хайруллин Эльдар <eldar.khayrullin@mail.ru> Signed-off-by: Paul Fertser <fercerpav@gmail.com> Reviewed-on: http://openocd.zylin.com/2247 Tested-by: jenkins Reviewed-by: demokmail <demokmail@gmail.com> Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>tags/v0.9.0-rc1