The SHARC datasheet specifies that TCK must be asserted low after power-up for proper operation of the device on page 16.
On page 10 of EE-68, there is a note that "Previous versions of this document called for pull-up resistors on TMS, TCK, and TDI. The strong drive strength of the CMOS buffers used int he emulator make this unnecessary".
The other device in my JTAG chain (a Spartan 6) has internal pullups on TDI, TDO, TMS, and TCK.
These three things seem to conflict and I am wondering what the proper implementation is.