Hardware definition for lcsoft board?

[zoobab]

Hi,

I have an LCSOFT board from here:

https://es.aliexpress.com/store/product/Free-ship-IEZ-USB-FX2LP-CY7C68013A-USB-core-board-development-board-USB-logic-analyzer-I2C-serial/808897_976713163.html

It has a 24Mhz clock, any idea how to adapt the description to fit it?

[mithro]

It should be pretty easy to adapt to this board. By 24MHz clock, you mean 24MHz crystal? The FX2 should be able to still run at full speed using a crystal of this speed.

Copy the https://github.com/mithro/ixo-usb-jtag/blob/master/hw_nexys.c file and create a hw_lcsoft.c file.

[klgsnd]

@zoobab Hi, have you tried the suggested by mithro approach?

[zoobab]

I think I tried and did not succeed, but that was a year ago.

But I should try to find some time to try again.

[drbsin]

@mithro
I want to use Port A of LCSOFT fx2lp logic analyzer for implementing digilent nexys2 usb jtag functionality
What are the necessary changes I need to make in hw_nexys.c file and other files in order to get it successfully compiled.
Kindly mention all the relevant steps.

[mithro]

It should be as simple as creating a hw_XXX.c file. Check the other hw_XXXX.c files for examples. If you want to use Port A the dj_usb is probably the best example to start from, see https://github.com/mithro/ixo-usb-jtag/blob/master/hw_dj_usb.c

GitHub

mithro/ixo-usb-jtag

ixo-usb-jtag - usb-jtag - Altera USB Blaster Emulation with a FX2

[drbsin]

That's OK. But, in that case an inverter is required for the TDO line.
I don't want to use any external components and prefer to use the board as it is.
Since, Port D is already available on this fx2lp board. Can I use the hw_nexys.c file without any alterations?
Is there any difference between digilent nexys2 original eeprom and ixo.de version of nexys2 compiled eeprom?
As I can see, original digilent nexys2 board have more pin connections viz. Control pins, Data Pins, USB-On pin (Apart from 4 jtag pins) coming from fx2lp.
But, this mini board is 56 pin version of fx2lp.
So, I'm suspecting whether a DigilentFX2 eeprom repair trial will work on this board or not.
Expecting your expert suggestions.