@subsection thelistjtaginterfaces JTAG Interfaces
@subsection thelistjtaginterfaces JTAG Interfaces
+There are some known bugs to fix in JTAG adapter drivers:
+
+- For JTAG_STATEMOVE to TAP_RESET, all drivers must ignore the current
+ recorded state. The tap_get_state() call won't necessarily return
+ the correct value, especially at server startup. Fix is easy: in
+ that case, always issue five clocks with TMS high.
+ - amt_jtagaccel.c
+ - arm-jtag-ew.c
+ - bitbang.c
+ - bitq.c
+ - gw16012.c
+ - jlink.c
+ - usbprog.c
+ - vsllink.c
+ - rlink/rlink.c
+
The following tasks have been suggeted for improving OpenOCD's JTAG
interface support:
The following tasks have been suggeted for improving OpenOCD's JTAG
interface support:
- J-Link driver:
- fix to work with long scan chains, such as R.Doss's svf test.
- FT2232 (libftdi):
- J-Link driver:
- fix to work with long scan chains, such as R.Doss's svf test.
- FT2232 (libftdi):
- - make performance comparable to alternatives
+ - make performance comparable to alternatives (on Win32, D2XX is faster)
- make usability comparable to alternatives
The following tasks have been suggested for adding new JTAG interfaces:
- make usability comparable to alternatives
The following tasks have been suggested for adding new JTAG interfaces:
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