erase failed at offset

[Altera_Forum]

Hi all, 

 I m programming EPCS64 through NIOS-II flash programmer (Cyclone III FPGA). The file i m trying to download into EPCS64 is of size 4 Mega Byte. And we are giving offset at 0x400000. But it is not able to program the EPCS64 device. We tried by changing offset also, but its not working. It is giving error   # !/bin/sh #  # This file was automatically generated by the Nios II IDE Flash Programmer. #  # It will be overwritten when the flash programmer options change. #   cd E:/TONE/hello_world_0/Debug  # Creating .flash file for the FPGA configuration "$SOPC_KIT_NIOS2/bin/sof2flash" --epcs --input="E:/TONE/TONE.sof" --output="TONE .flash"  Info: ******************************************************************* Info: Running Quartus II Convert_programming_file Info: Command: quartus_cpf --no_banner --convert --device=EPCS128 --option=TONE. opt E:/TONE/TONE.sof TONE.pof Info: Quartus II Convert_programming_file was successful. 0 errors, 0 warnings  Info: Peak virtual memory: 77 megabytes  Info: Processing ended: Mon Aug 23 10:03:04 2010  Info: Elapsed time: 00:00:10  Info: Total CPU time (on all processors): 00:00:08 Info: ******************************************************************* Info: Running Quartus II Convert_programming_file Info: Command: quartus_cpf --no_banner --convert TONE.pof TONE.rpd Info: Quartus II Convert_programming_file was successful. 0 errors, 0 warnings  Info: Peak virtual memory: 73 megabytes  Info: Processing ended: Mon Aug 23 10:03:16 2010  Info: Elapsed time: 00:00:09  Info: Total CPU time (on all processors): 00:00:08  # Programming flash with the FPGA configuration "$SOPC_KIT_NIOS2/bin/nios2-flash-programmer" --epcs --base=0x00041800 --cable='U SB-Blaster [USB-0]' "TONE.flash" Using cable "USB-Blaster [USB-0]", device 1, instance 0x00 Resetting and pausing target processor: OK   : Checksumming existing contents   00000000 : Verifying existing contents   00010000 : Verifying existing contents   00020000 : Verifying existing contents   00030000 : Verifying existing contents   00040000 : Verifying existing contents   00050000 : Verifying existing contents   00000000 : Reading existing contents   00010000 : Reading existing contents   00020000 : Reading existing contents   00030000 : Reading existing contents   00040000 : Reading existing contents   00050000 : Reading existing contents   Checksummed/read 19kB in 0.7s   00000000 ( 0%): Erasing   00010000 (16%): Erasing   00020000 (33%): Erasing   Erase failed at offset 20000  Leaving target processor paused  # Creating .flash file for the datafile "$SOPC_KIT_NIOS2/bin/bin2flash" --base=0x00041800 --location=0x400000 --input="E :/TONE/toneann.dat" --output="toneann.flash"  # Programming flash with the datafile "$SOPC_KIT_NIOS2/bin/nios2-flash-programmer" --epcs --base=0x00041800 --cable='U SB-Blaster [USB-0]' "toneann.flash" Using cable "USB-Blaster [USB-0]", device 1, instance 0x00 Resetting and pausing target processor: OK   : Checksumming existing contents   00400000 : Verifying existing contents   00410000 : Verifying existing contents   00420000 : Verifying existing contents  . . . . . .  00790000 : Verifying existing contents   007A0000 : Verifying existing contents   007B0000 : Verifying existing contents   007C0000 : Verifying existing contents   007D0000 : Verifying existing contents   007E0000 : Verifying existing contents   007F0000 : Verifying existing contents   00400000 : Reading existing contents   00410000 : Reading existing contents   00420000 : Reading existing contents  . . . . . .  00790000 : Reading existing contents   007A0000 : Reading existing contents   007B0000 : Reading existing contents   007C0000 : Reading existing contents   007D0000 : Reading existing contents   007E0000 : Reading existing contents   007F0000 : Reading existing contents   Checksums took 0.0s   00400000 ( 0%): Erasing   00410000 ( 1%): Erasing   00420000 ( 3%): Erasing   00430000 ( 4%): Erasing   00440000 ( 6%): Erasing   00450000 ( 7%): Erasing   00460000 ( 9%): Erasing   Erase failed at offset 460000  Leaving target processor paused

[Altera_Forum]

plz do reply someone........................

[Altera_Forum]

My prbm is solved by changing the value of resister from 1k to 240 ohm.

[Altera_Forum]

Which resistor did you changed?

[Altera_Forum]

TCLK pullup resistance.

[Altera_Forum]

Thanks a lot for your post. I had exactly the same problem and now it's working with 220 ohm.

[Altera_Forum]

I have the same problem. ajay_106 and isue, could you be a little more specific, please? 

Is TCLK the 1st pin of JTAG or DCLK pin of EPCS device? If it is the 1st pin of JTAG, namely TCK, it should be pulldown to the GND, not pullup. ajay_106 said TCLK pullup resistance was changed. Is it correct?