After several years of dust, the EP1C20 is getting the latest tools, and returning back to life on my bench. This is a HOWTO with the newest tools.
Quartus 9.0 / nios2eds 9.0
Running the Linux version of Quartus
USB Blaster JTAG cable
Quartus is abbreviated to Q9.0 or Q7.2 respectively
Post Quartus 7.2, the Cyclone I is no longer fully supported.
Quartus 9.0 Status
no example for EP1C20 dev board, or any Cyclone I dev boards
text based jtag does not recognize id 020840DD as EP1C20
both text / gui programmers are able to program the chip with no problems
jtagconfig -n does not show niosII nodes, unable to load any nios2 programs
Since the nodes are not detected, no programs are able to be uploaded, and hence zero functionality. The example below shows output from jtag 9.0, note that the -n switch should show all running nodes.
[tom@garak full_featured]$ jtagconfig -n
1) USB-Blaster [USB 3-1.1]
To get around the limitation, find a jtag_client.so file from quartus 7.2, located in /usr/altera/quartus7.2/linux/libjtag_client.so (note this is my install dir, which may differ).
rename your original jtag_client.so to jtag_client.so_orig just in case
overwrite file from ver Q9.0 with the Q7.2 one
restart jtagd as root if required
Note: the quartus7.2/linux directory contains the jtag_client.so for the 32-bit version. Most Quartus installations come with both 32 and 64 bit versions. If you are running 64 bit, you are well to copy both 32 and 64 versions respectively, but don't mix them up!
After doing so, the output should finally list the running nodes:
Since the nios2eds 9.0 no longer contains any example designs for any pre Cyclone II boards, the designs have to be borrowed from ver 7.2. Perhaps I will post the files here.
In the dir /software/altera/nios2eds/examples/verilog/niosII_cyclone_1c20/full_featuredyou will find the whole project. No changes are necessary to compile with Q9.0. Some warnings about deprecated directives should be ignored.