hello,
I add the byteblasterII support to the adv_jtag_bridge, see the diff:
#####################################################################
Index: cable_common.c
===================================================================
--- cable_common.c (revision 58)
+++ cable_common.c (working copy)
@@ -65,6 +65,7 @@

#ifdef __SUPPORT_PARALLEL_CABLES__
jtag_cables[i++] = cable_xpc3_get_driver();
+ jtag_cables[i++] = cable_bb2_get_driver();
jtag_cables[i++] = cable_xess_get_driver();
#endif

Index: cable_parallel.c
===================================================================
--- cable_parallel.c (revision 58)
+++ cable_parallel.c (working copy)
@@ -50,6 +50,21 @@
.help = "-p [port] Which port to use when communicating with the parport
hardware (eg. 0x378)\n"

};

+jtag_cable_t bb2_cable_driver = {
+ .name = "bb2",
+ .inout_func = cable_bb2_inout,
+ .out_func = cable_bb2_out,
+ .init_func = cable_parallel_init,
+ .opt_func = cable_parallel_opt,
+ .bit_out_func = cable_common_write_bit,
+ .bit_inout_func = cable_common_read_write_bit,
+ .stream_out_func = cable_common_write_stream,
+ .stream_inout_func = cable_common_read_stream,
+ .flush_func = NULL,
+ .opts = "p:",
+ .help = "-p [port] Which port to use when communicating with the
parport hardware (eg. 0x378)\n"
+ };
+
jtag_cable_t xess_cable_driver = {
.name = "xess",
.inout_func = cable_xess_inout,
@@ -275,6 +290,59 @@
return retval;

}

+/*----------------------------------------------[ bb2 specific
functions ]---*/
+jtag_cable_t *cable_bb2_get_driver(void)
+{
+ return &bb2_cable_driver;
+}
+
+int cable_bb2_out(uint8_t value)
+{
+ uint8_t out = 0;
+
+ cable_parallel_phys_wait(); // Limit the max clock rate if necessary
+
+ /* First convert the bits in value byte to the ones that the cable
wants */
+ if(value & TCLK_BIT)
+ out |= 0x01; /* D0 pin 2 */
+ if(value & TRST_BIT)
+ out |= 0x10; /* Not used */
+ if(value & TDI_BIT)
+ out |= 0x40; /* D7 pin 8 */
+ if(value & TMS_BIT)
+ out |= 0x02; /* D1 pin 3 */
+
+ return cable_parallel_out(out);
+}
+
+int cable_bb2_inout(uint8_t value, uint8_t *inval)
+{
+ uint8_t in;
+ int retval;
+ uint8_t out = 0;
+
+ cable_parallel_phys_wait(); // Limit the max clock rate if necessary
+
+ /* First convert the bits in value byte to the ones that the cable
wants */
+ if(value & TCLK_BIT)
+ out |= 0x01; /* D0 pin 2 */
+ if(value & TRST_BIT)
+ out |= 0x10; /* Not used */
+ if(value & TDI_BIT)
+ out |= 0x40; /* D7 pin 8 */
+ if(value & TMS_BIT)
+ out |= 0x02; /* D1 pin 3 */
+
+ retval = cable_parallel_inout(out, &in);
+
+ if(in & 0x80) /* S7 pin 11 */
+ *inval = 1;
+ else
+ *inval = 0;
+
+ return retval;
+}
+
/*----------------------------------------------[ xess specific
functions ]---*/
jtag_cable_t *cable_xess_get_driver(void)
{
Index: cable_parallel.h
===================================================================
--- cable_parallel.h (revision 58)
+++ cable_parallel.h (working copy)
@@ -13,6 +13,10 @@
int cable_xpc3_inout(uint8_t value, uint8_t *inval);
int cable_xpc3_out(uint8_t value);

+jtag_cable_t *cable_bb2_get_driver(void);
+int cable_bb2_inout(uint8_t value, uint8_t *inval);
+int cable_bb2_out(uint8_t value);
+
jtag_cable_t *cable_xess_get_driver(void);
int cable_xess_inout(uint8_t value, uint8_t *inval);
int cable_xess_out(uint8_t value);

#######################################################################
It seems work, I got the result below:
$ sudo adv_jtag_bridge -x1 bb2

Connected to parallel port at 378
Dropping root privileges.
Enumerating JTAG chain...
WARNING: maximum supported devices on JTAG chain (1024) exceeded.

Devices on JTAG chain:
Index Name ID Code IR Length
----------------------------------------------------------------
0: (unknown) 0xFFFFFFFF -1
1: (unknown) 0x7EFA6791 -1
2: (unknown) 0xFFFFFFFF -1
...
1022: (unknown) 0xFFFFFFFF -1
1023: (unknown) 0xFFFFFFFF -1

Target device 1, JTAG ID = 0x7efa6791
ERROR! Unable to autoprobe IR length for device index 1; Must set IR
size on command line. Aborting.

from the result, we can get the jtag id, so I think the code has worked,
but what I should do next,
add some bsdl file or any thing else?

regards