The JTAG port has been tested with a Altera ByteBlaster MV cable and a BDI2000 JTAG interface. The JTAG interface was connected directly to the pads on the NSLU2. No pullup resistors were needed.

If you wish to use JTAG Tools then you must add the IXP425 @ 266MHz ident string (1001001001110111) to jtag/intel/PARTS and the B0 stepping (0001) to jtag/intel/ixp425/STEPPINGS

The BSDL file for the IXP425 can be found on the IXP425 product page.

Example run using JTAG Tool 0.51.

JTAG Tools 0.5.1
Copyright (C) 2002, 2003 ETC s.r.o.
JTAG Tools is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
There is absolutely no warranty for JTAG Tools.

Warning: JTAG Tools may damage your hardware! Type "quit" to exit!

Type "help" for help.

jtag> cable parallel 0x378 ByteBlaster
Initializing Altera ByteBlaster/ByteBlaster II/ByteBlasterMV Parallel Port Download Cable on parallel port at 0x378

jtag> detect
IR length: 7
Chain length: 1
Device Id: 00011001001001110111000000010011
  Manufacturer: Intel
  Part:         IXP425-266MHz
  Stepping:     B0
  Filename:     /usr/local/share/jtag/intel/ixp425/ixp425

jtag> print
 No. Manufacturer              Part                 Stepping Instruction  Register
---------------------------------------------------------------------------------------------
   0 Intel                     IXP425-266MHz        B0       BYPASS       BR

Active bus:
*0: Intel IXP425 compatible bus driver via BSR (JTAG part No. 0)
        start: 0x00000000, length: 0x100000000, data width: 16 bit

jtag> detectflash
Query identification string:
        Primary Algorithm Command Set and Control Interface ID Code: 0x0001 (Intel/Sharp Extended Command Set)
        Alternate Algorithm Command Set and Control Interface ID Code: 0x0000 (null)
Query system interface information:
        Vcc Logic Supply Minimum Write/Erase or Write voltage: 2700 mV
        Vcc Logic Supply Maximum Write/Erase or Write voltage: 3600 mV
        Vpp [Programming] Supply Minimum Write/Erase voltage: 0 mV
        Vpp [Programming] Supply Maximum Write/Erase voltage: 0 mV
        Typical timeout per single byte/word program: 256 us
        Typical timeout for maximum-size multi-byte program: 256 us
        Typical timeout per individual block erase: 2048 ms
        Typical timeout for full chip erase: 0 ms
        Maximum timeout for byte/word program: 1024 us
        Maximum timeout for multi-byte program: 1024 us
        Maximum timeout per individual block erase: 16384 ms
        Maximum timeout for chip erase: 0 ms
Device geometry definition:
        Device Size: 8388608 B (8192 KiB, 8 MiB)
        Flash Device Interface Code description: 0x0002 (x8/x16)
        Maximum number of bytes in multi-byte program: 32
        Number of Erase Block Regions within device: 1
        Erase Block Region Information:
                Region 0:
                       Erase Block Size: 131072 B (128 KiB)
                       Number of Erase Blocks: 64