hi i have got an Altera Flex10K, EPF10K10LC84 dev board, which has byteblaster programmer onboard, unfortunately my PC has no LPT port in order to connect the byteblaster so i ordered usb blaster which has been tested with a pretty Altera MaxII board and it works fine. My problem is that the flex10K board has a jtag port but i can't recognize the device if i put my usb blaster cable on it. Any idea ? Also is there around a schematic that shows how to build a dev board: i mean the flex10K chip putted on 1000Holes proto board with jtag connector. I am asking that because i'd like to build the dev board my own with a 50Mhz clock generator onboard. let me know, regards

--- Quote Start --- My problem is that the flex10K board has a jtag port but i can't recognize the device if i put my usb blaster cable on it. --- Quote End --- What version of Quartus are you using? If you want to synthesize for the FLEX10K devices, you need to install 9.0SP2. I think the latest version of Quartus should still recognize a FLEX10K device, even if it will not let you synthesize a design for it. Have you tried using the JTAG debugger to read the IDCODE? How have you wired your USB-Blaster into the FLEX10K board? You comment that the board has a byte-blaster circuit built into it. Did you connect your USB-Blaster to the inputs to this byte-blaster circuit, or did you remove it, and attach the USB-Blaster directly to the FPGA JTAG pins? The USB-Blaster power for its internal buffer comes from the target, so you need to make sure you have that connected. Cheers, Dave

--- Quote Start --- What version of Quartus are you using? --- Quote End --- Hi i am using the last one, Quartus v11, but i also have here a copy of an old Quartus version 9 (with license), i will install into a virtual machine tomorrow. maybe it's a support missing problem by the new Altera software ? --- Quote Start --- Have you tried using the JTAG debugger to read the IDCODE? --- Quote End --- No, just invoked the programmer clicking on "autodetect device on the jtag chain", which is working with my MAX-II chip, but it is not working with flex10k. Tomorrow i will invoke the jtag debugger on the quartus v9, too. --- Quote Start --- How have you wired your USB-Blaster into the FLEX10K board? You comment that the board has a byte-blaster circuit built into it. Did you connect your USB-Blaster to the inputs to this byte-blaster circuit, or did you remove it, and attach the USB-Blaster directly to the FPGA JTAG pins? --- Quote End --- Well, that is a very good question, but the i have a right reply: the board is made with a 74xx244 chip puted on a dip socket, and it also has got an LPT connector which should be plugged into a PC parallel port, but the board has a JTAG connector which should pin to pin compatble with the usb-blaster cable. I say "it should" because i have no schematic or pinout, and i have only checked that the two gnd signals of the jtag connector are matching with the ones on the jtag cable, and they do! I don't know where TDI/TDO/TMS etc are routed to the fpga chip, i only trust they are right as the fact the connector is labeled "jtag". my usb blaster cable has the Vcc removed, so it does not power the pcb, the powersupply is applied from an external 5V 2A DC device. --- Quote Start --- The USB-Blaster power for its internal buffer comes from the target, so you need to make sure you have that connected. --- Quote End --- The USB is powering the usb blaster, the flex10k jtag connector has no Vcc connected to the jtag cable, to be honest the usb blaster jtag cable has the Vcc wire removed, anyway the MAX-II board is working with success this way. but i really want to put my 84plcc flex10K chip into a plcc socket soldered on a 1000 holes proto board, any schematic around in order to do that ?

--- Quote Start --- the board is made with a 74xx244 chip puted on a dip socket, and it also has got an LPT connector which should be plugged into a PC parallel port, but the board has a JTAG connector which should pin to pin compatble with the usb-blaster cable. I say "it should" because i have no schematic or pinout, and i have only checked that the two gnd signals of the jtag connector are matching with the ones on the jtag cable, and they do! --- Quote End --- Boards that have two programming options quite often have a jumper or DIP switch to select what is in control of the JTAG interface. You should toggle a signal on the TCK line with TMS held high, and probe the FPGA to see if you can see the TCK waveform. The JTAG debugger tool will allow you to generate toggling signals. --- Quote Start --- I don't know where TDI/TDO/TMS etc are routed to the fpga chip, i only trust they are right as the fact the connector is labeled "jtag". --- Quote End --- Their pin assignments are fixed. Just probe the pins on the device. --- Quote Start --- my usb blaster cable has the Vcc removed, so it does not power the pcb, the powersupply is applied from an external 5V 2A DC device. --- Quote End --- The VCC on the 10-pin JTAG header does not power the board, it is there to power the buffer located inside the JTAG cable. That buffer implements logic level translation between the 3.3V CPLD and the JTAG buffers on whatever board you are using. If you do not have that pin connected to the USB-Blaster, then the TCK/TMS/TDI signals will never toggle. --- Quote Start --- anyway the MAX-II board is working with success this way. --- Quote End --- Then you have something wrong with your USB-Blaster. Is it an Altera or Terasic USB-Blaster, or is it a clone? --- Quote Start --- but i really want to put my 84plcc flex10K chip into a plcc socket soldered on a 1000 holes proto board, any schematic around in order to do that ? --- Quote End --- Just draw one. Why are you even thinking about using a FLEX10K device. They're old and useless. Buy a Cyclone device for $15 and you have access to SignalTap II logic analyzer, JTAG to the FPGA fabric, on-chip PLLs, LVDS I/Os, etc. The FLEX devices are old and dead, its time for you to move on to a more modern device. Cheers, Dave

Hi, i have tested the flex10k device with the jtag debugger and it says there is uncertain device on the jtag chain with error on clock ... it sound very bad, because when i plug the maxII chip it says "EPM1270 detected" with a lot of info about. i have no option switch in order to select the on board byteblaster or the jtag on which to plug the usbblaster. No dip switch, no jumper, nothing. I am using flex10k because I have a tube of 50 flex10k chips, bought for cheap ($10 for the whole) and they are good as the fact they are ram-configurable device (it has a ram inside which stores the bitstream config), my maxII is flash configurable device (it has a flash inside which stores the bitstrea), i prefer the ram method =P is there any other cpld or fpga with ram config instead of flash config ? about cyclone i will buy the DE0-nano board soon, but about toying i really like flex10k, which is plcc84 package and should works very well @5V thank you to have explained me the jtag sensing pin, which is called Power but the real meaning is understanding if the target is 3.3V or 5V: my usb blaster cable should be an original altera one, but i got it form china so i don'r really know, anycase i also got a kit from altera which include an original usbblaster and i will use it. Ok, today i will reverse enge the flex10k in order to understand how the chip is wired to the jtag connector and to the clock generator. I am using this board in order to understand how to build my own flex10k board, have you got any suggestion / schematic example or other to get me started ? regards

f.e. about IEEE Std. 1149.1 Signals (jtag) Altera recommends pulling the TCK signal low through the internal weak pull-down resistor or an external 1-k&#61527; resistor, any other suggestion ?

Altera Flex10K, EPF10K10LC84 dev board | Altera Community

12 Replies

Altera_Forum
Honored Contributor
14 years ago
--- Quote Start ---
What version of Quartus are you using?

--- Quote End ---

Hi
i am using the last one, Quartus v11, but i also have here a copy of an old Quartus version 9 (with license), i will install into a virtual machine tomorrow.

maybe it's a support missing problem by the new Altera software ?

--- Quote Start ---

Have you tried using the JTAG debugger to read the IDCODE?

--- Quote End ---

No, just invoked the programmer clicking on "autodetect device on the jtag chain", which is working with my MAX-II chip, but it is not working with flex10k. Tomorrow i will invoke the jtag debugger on the quartus v9, too.

--- Quote Start ---

How have you wired your USB-Blaster into the FLEX10K board? You comment that the board has a byte-blaster circuit built into it. Did you connect your USB-Blaster to the inputs to this byte-blaster circuit, or did you remove it, and attach the USB-Blaster directly to the FPGA JTAG pins?

--- Quote End ---

Well, that is a very good question, but the i have a right reply: the board is made with a 74xx244 chip puted on a dip socket, and it also has got an LPT connector which should be plugged into a PC parallel port, but the board has a JTAG connector which should pin to pin compatble with the usb-blaster cable.

I say "it should" because i have no schematic or pinout, and i have only checked that the two gnd signals of the jtag connector are matching with the ones on the jtag cable, and they do!

I don't know where TDI/TDO/TMS etc are routed to the fpga chip, i only trust they are right as the fact the connector is labeled "jtag".

my usb blaster cable has the Vcc removed, so it does not power the pcb, the powersupply is applied from an external 5V 2A DC device.

--- Quote Start ---

The USB-Blaster power for its internal buffer comes from the target, so you need to make sure you have that connected.

--- Quote End ---

The USB is powering the usb blaster, the flex10k jtag connector has no Vcc connected to the jtag cable, to be honest the usb blaster jtag cable has the Vcc wire removed, anyway the MAX-II board is working with success this way.

but i really want to put my 84plcc flex10K chip into a plcc socket soldered on a 1000 holes proto board, any schematic around in order to do that ?
Altera_Forum
Honored Contributor
14 years ago
--- Quote Start ---

My problem is that the flex10K board has a jtag port but i can't recognize the device if i put my usb blaster cable on it.

--- Quote End ---
What version of Quartus are you using?

If you want to synthesize for the FLEX10K devices, you need to install 9.0SP2.

I think the latest version of Quartus should still recognize a FLEX10K device, even if it will not let you synthesize a design for it. Have you tried using the JTAG debugger to read the IDCODE?

How have you wired your USB-Blaster into the FLEX10K board? You comment that the board has a byte-blaster circuit built into it. Did you connect your USB-Blaster to the inputs to this byte-blaster circuit, or did you remove it, and attach the USB-Blaster directly to the FPGA JTAG pins?

The USB-Blaster power for its internal buffer comes from the target, so you need to make sure you have that connected.

Cheers,
Dave

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Altera Flex10K, EPF10K10LC84 dev board

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