reset_config trst_and_srst srst_pulls_trst
#jtag scan chain
-#format L IRC IRCM IDCODE (Length, IR Capture, IR Capture Mask, IDCODE)
-jtag_device 4 0x1 0xf 0xe
+jtag newtap str7 cpu -irlen 4 -irmask 0xf
#target configuration
target create target0 arm7tdmi -endian little -chain-position 0 -variant arm7tdmi