Thanks Subroto. I'm using Quartus with Byteblaster II to program the
EPC2 using JTAG. I have the EPC2 configured (using the .pof file) to
then configure the FLEX10K using Passive Serial mode. (I never use the
..sof file and I can't talk to the FPGA directly anyways.)
But this is the problem that I'm having now:
The configuration cycle state machine seems to be getting stuck in the
Configuration state thereby never getting to the user-mode. I suspect
this because my CONF_DONE is low and nSTATUS is high. Also, all my
output pins seem to be high (or tri-stated).
The FPGAs were working fine and I hadn't programmed the EPC2 more than
a handful of times, but one fine morning it just randomly stopped
working. I have other spare boards running the same configuration and
code and they've been working fine for over a year.
Subroto Datta wrote:
> Hello Jim,
> ) Configuring refers to the loading information into the FPGA.
> Programming refers to loading information into the EPC2 flash memory
> 2) Quartus II software uses the SOF file to configure the FPGA with a
> download cable. The POF file is used to program the EPC2 device.
> Hope this helps.
> Subroto Datta
> Altera Corp.
> firstname.lastname@example.org wrote:
> > I want to configure/program an Altera FLEX EPF10K30ETC144-3 + EPC2LC20
> > using files I've generated using Quartus for the same devices. I want
> > to use JTAG to interface to the devices using my ByteBlaster II. I have
> > carefully followed all Altera directions in generating the files and
> > designing the circuit with the devices on a PCB. My 2 questions are:
> > 1) What is the difference between "configuring" and "programming" in
> > this context?
> > 2) What file should I use to configure/program? .sof or .pof or both?
> > Any help would be greatly appreciated. I inherited the code and PCB
> > from another team that were using everything successfully. All I'm
> > trying to do is reprogram a new FPGA on the same PCB with the same
> > files. Unfortunately I do not have any contact with that team any more
> > for help.
> > -Jim