a problem about memtest

[Altera_Forum]

hi all 

I construct a system including a cpu ,a on_chip_ram(6K), a flash( 1M X 16bit), a tri_state_bridge! I use the project of memtest in nios 5.0! but when I use the run... function, the console display: Using cable "ByteBlasterII ", device 1, instance 0x00 Pausing target processor: OK  Downloading 00000000 ( 0%) Downloading 00010000 (92%) Downloaded 70KB in 1.8s (38.8KB/s)  Verifying 00000000 ( 0%) Verify failed  Leaving target processor paused   do these information means download success , but not verify?why? I think my flash is good, I can use vhdl to write and read flash.

[Altera_Forum]

This is nothing to do with memory test, this is saying that nios2-download has checked the hardware in your FPGA and it doesn't match what the code is expecting. I suggest you follow one of the tutorials to learn how to program the FPGA.

[Altera_Forum]

While sometimes nios2-download failes due to the wrong SOPCB System is on the board (you get a message like "[...] System ID [...] does not match [...]").  

 In this case, your problem is that the read back of the memory failed during download.  See http://www.niosforum.com/forum/index.php?a...t=st&f=2&t=1937 (http://www.niosforum.com/forum/index.php?act=st&f=2&t=1937) for a similar discussion.  ----  Actually after looking more closely, you appear to be downloading to a Flash? If so, you need to use a flash programmer as the run/debug cycles use nios2-download to download to RAMs.

[Altera_Forum]

thank u! 

 you are right, my sram work well, I am testing my flash, I am using sst39vf1601-70!  But when I use flash programmer to writing my flash ,nios console display:  make: Entering directory `/cygdrive/c/altera/quartus41/project/sram/software/hello_led_3/Debug' nios2-flash-programmer --input=cfi_flash_0.flash --sof=`C:/altera/quartus41/sopc_builder/bin/find_sopc_component_dir my_target_board`/system/my_target_board.sof --device=1 "--cable='ByteBlasterII [LPT1]'" --base=0x00200000 Jul 12, 2005 6:09:21 PM - (??) nios2-flash-programmer: Launching Quartus Programmer to download:  c:/altera/quartus41/project/my_target_board/system/my_target_board.sof Jul 12, 2005 6:09:29 PM - (??) nios2-flash-programmer: Error opening target hardware Jul 12, 2005 6:09:29 PM - (??) nios2-flash-programmer: Unable to open flash-device after successfully communicating  with target. It is likely that you are using a flash-programming FPGA design which was not created for your target board.   In order to program flash, you must first create a purpose-built  flash-programming design (i.e. FPGA configuration) and associate it with  your particular board. The Nios development kit is delivered with purpose-built  flash-programming designs pre-built for several development boards. If you wish  to program flash on your own board, you must first create a flash-programming  design.   The process of creating a flash-programming design for your board is mostly  automated. From a bash-shell, execute this script:   mk_target_board --help   The help-message includes references to other documentation on programming  flash and targeting Nios systems to custom board designs.  - exiting. WARNING: Default charset GBK not supported, using ISO-8859-1 instead make: *** [cfi_flash_0_programflash] Error 6 make: Leaving directory `/cygdrive/c/altera/quartus41/project/sram/software/hello_led_3/Debug'     but I have make target_board named my_target_board!  why the flash cannot be open??