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Compilation problem
Posted: Thu Jun 11, 2020 4:08 pm
by Sinclair
I have been trying to compile this core and have always got the following warning:
Code: Select all
Critical Warning (332148): Timing requirements not met
Info (11105): For recommendations on closing timing, run Report Timing Closure Recommendations in the TimeQuest Timing Analyzer.
The corresponding RBF file is not generated, however the SOF file is generated but it calls it "ao486_time_limited.sof".
I have used the same version of Quartus as the other cores.
What is the reason of this time limit and how can I correctly generate the RBF file?
Thanks in advance.
Re: Compilation problem
Posted: Thu Jun 11, 2020 10:46 pm
by macro
It uses some of the IP components that you only have full access to on the registered version (i.e. paid for)
I think it was mainly the UART, but I would have thought it would tell you in the output.
These parts would need to be replaced with open versions for it to generate the RBF on the lite version.
Re: Compilation problem
Posted: Fri Jun 12, 2020 4:04 pm
by Sinclair
Does that mean that it would be possible to compile this kernel without the paid Quartus version?
If so, I would like to know the necessary configuration.
Thank you.
Re: Compilation problem
Posted: Fri Jun 12, 2020 6:36 pm
by tontonkaloun
what version of the core were you talking about? I will test
Re: Compilation problem
Posted: Sat Jun 13, 2020 2:28 am
by Sinclair
tontonkaloun wrote: ↑Fri Jun 12, 2020 6:36 pm
what version of the core were you talking about? I will test
This, for example:
https://github.com/MiSTer-devel/ao486_MiSTer.git
Re: Compilation problem
Posted: Sat Jun 13, 2020 2:56 pm
by tontonkaloun
I have the same problem as you with two versions of Quartus
Re: Compilation problem
Posted: Sat Jun 13, 2020 3:57 pm
by macro
After compiling, go into the Analysis & Synthesis section, and then clicki IP Cores Summary - that shows which licensed cores it needs. These will all need replacing with your own code / opencores versions for it to produce RBF with the Lite version
Re: Compilation problem
Posted: Sat Jun 13, 2020 6:33 pm
by tontonkaloun
ok i will try
Re: Compilation problem
Posted: Sat Jun 13, 2020 6:53 pm
by ExCyber
As macro mentioned upthread, it's the 16550 UART core. The relevant warnings look like this:
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Warning (12188): OpenCore Plus Hardware Evaluation feature is turned on for the following cores
Warning (12190): "16550 UART" will use the OpenCore Plus Hardware Evaluation feature
Warning (265072): Messages from megafunction that supports OpenCore Plus feature
Warning (265073): Messages from megafunction that supports OpenCore Plus feature Altera 16550 Compatible UART
Warning (265074): The reset input will be asserted when the evaluation time expires
Warning (265069): Megafunction that supports OpenCore Plus feature will stop functioning in 1 hour after device is programmed
At first glance, the core seems to be fine without the UART. I only booted DR-DOS 7.03, so I'm not sure about problems with e.g. Windows or Linux. However, note that the IP core must be removed in Qsys; you can't just remove the instantiation in the generated system.v file because it will be regenerated. I also removed "width_trans" in Qsys because this seems to only exist to deal with the UART. This will also require removing the uart connections to the "system" instantiation in ao486.sv.
Re: Compilation problem
Posted: Mon Jun 15, 2020 10:01 am
by Sinclair
I understand then that it is not possible to compile this core without the paid version or without giving up the UART.