from tcl.c:375
static const struct nvp jtag_newtap_opts[] = {
{ .name = "-irlen", .value = NTAP_OPT_IRLEN },
{ .name = "-irmask", .value = NTAP_OPT_IRMASK },
{ .name = "-ircapture", .value = NTAP_OPT_IRCAPTURE },
{ .name = "-enable", .value = NTAP_OPT_ENABLED },
{ .name = "-disable", .value = NTAP_OPT_DISABLED },
{ .name = "-expected-id", .value = NTAP_OPT_EXPECTED_ID },
{ .name = "-ignore-version", .value = NTAP_OPT_VERSION },
{ .name = "-ignore-bypass", .value = NTAP_OPT_BYPASS },
{ .name = "-ir-bypass", .value = NTAP_OPT_IRBYPASS },
{ .name = NULL, .value = -1 },
};