Help, hello_world_small can not display

hello experts,

I want to run hello-world-small program on my own board, There are 1 epld and 2 stratix GX fpgas and 2 stratix FPGAs on the chain. I use one stratix GX FPGA to do nios2 test and using on-chip memory for Instruction and data memory.

Instruction memory is 16KB and data memory is 4KB.

But when I run the program using NIOS2 IDE, no 'hello' messages displayd on terminal window, the window only has such message as following:

********************

nios2-terminal: connected to hardware target using JTAG UART on cable

nios2-terminal: "ByteBlasterII [LPT1]", device 4, instance 0

nios2-terminal: Warning: The JTAG cable you are using is not supported for Nios

nios2-terminal: II systems. You may experience intermittent JTAG communication

nios2-terminal: failures with this cable. Please use a USB Blaster revision B

nios2-terminal: cable or another supported cable. Please refer to the file

nios2-terminal: errata.txt included in the Nios II development kit documents

nios2-terminal: directory for more information.

nios2-terminal: starting in terminal mode (Control-C exits)

*********************

In order to know whether nios is runing or not, I add some code to hello_world_small.c, which using pio to control led, the changed hello_world_small.c is as following:

*********************************************# include "system.h"# include "altera_avalon_pio_regs.h"# include "alt_types.h"# include "stdio.h"

int main()

{

alt_u8 led = 0x2;

alt_u8 dir = 0;

volatile int i;

while (1)

{

if (led & 0x81)

{

dir = (dir ^ 0x1);

}

if (dir)

{

led = led >> 1;

}

else

{

led = led << 1;

}

IOWR_ALTERA_AVALON_PIO_DATA(PIO_0_BASE, led);

i = 0;

while (i<200000)

i++;

printf("Hi!\n");

}

return 0;

}

****************************************

At this time, I can see that led is controled by software correctly, this means that nios cpu is runing, but there is also no any printed message(&#39;hi&#39;) in the window, terminal window and download window has following messages:

********************************************************

terminal window:

nios2-terminal: connected to hardware target using JTAG UART on cable

nios2-terminal: "ByteBlasterII [LPT1]", device 4, instance 0

nios2-terminal: Warning: The JTAG cable you are using is not supported for Nios

nios2-terminal: II systems. You may experience intermittent JTAG communication

nios2-terminal: failures with this cable. Please use a USB Blaster revision B

nios2-terminal: cable or another supported cable. Please refer to the file

nios2-terminal: errata.txt included in the Nios II development kit documents

nios2-terminal: directory for more information.

nios2-terminal: starting in terminal mode (Control-C exits)

download output:

Using cable "ByteBlasterII [LPT1]", device 4, instance 0x00

Processor is already paused

Downloading 00010000 ( 0%)

Downloaded 3KB in 0.1s

Leaving target processor paused

************************************************

I am not sure why no "hello" or "hi" messages are printed in terminal, How can I do now?

Maybe Jtag-uart can not work well in multi-component Jtag chain?

Maybe data-memory is too small(4KB)?

Maybe I should using usb_bluster cable?

Thanks