Hello

I've got problem with Quartus 5.0 with Service Pack 1. Problem occurs in 
compilation process after fitting. When assembling is at 47% I get 
'Quartus II Internal Error' which says:

'Internal Error: Sub-system: ASM, File: asm_ram_model_base.cpp, Line: 3430
clock_is_used == clock_found
Quartus II Version 5.0 Build 168 06/22/2005 SJ Web Edition
Service Pack Installed:  1'

I used to get this kind of errors earlier in this and previous versions 
of Quartus, but restarting Quartus or computer was always a solution.

Project is for Acex EP1K30 device and contains 2 lpm_ram_dp megafunctions.

Can anyone give me directions what can cause this kind of problems?

Best Regards
czerstwy

Is there a Mysupport service request number on this? Also please send
me a project archive of your design so that we can reproduce the
problem in house.

Subroto Datta
Altera Corp.

Subroto Datta wrote:
> Is there a Mysupport service request number on this? Also please send

I don't see anything like this.

> me a project archive of your design so that we can reproduce the
> problem in house.

I did some more test and now I know whats the problem. I created 
lpm_ram_dp as synchronous, but i overlook connecting few clocks. 
Compiler for Acex family don't recognize this situation as ahdl error in 
Analysis and Synthesis stage and successfully goes through this and 
fitting stage. When I change device family to Flex10k and started 
compilation, error was reported at the first stage in 
Messages->Processing window and  report said that I've got some clocks 
input not connected.

Thanks and Best Regards
czerstwy

czerstwy wrote:
> Hello
> 
> I've got problem with Quartus 5.0 with Service Pack 1. Problem occurs in
> compilation process after fitting. When assembling is at 47% I get
> 'Quartus II Internal Error' which says:
> 
> 'Internal Error: Sub-system: ASM, File: asm_ram_model_base.cpp, Line: 3430
> clock_is_used == clock_found
> Quartus II Version 5.0 Build 168 06/22/2005 SJ Web Edition
> Service Pack Installed:  1'
> 
> I used to get this kind of errors earlier in this and previous versions
> of Quartus, but restarting Quartus or computer was always a solution.
> 
> Project is for Acex EP1K30 device and contains 2 lpm_ram_dp megafunctions.
> 
> Can anyone give me directions what can cause this kind of problems?

Last time I got an "Internal Error" with quartus, it just didn't like
the name of one of my signal ... I just changed the name to another name
and it worked. Changing it back made it crash again so that was _really_
the name of the signal.

To 'isolate' the problem, I synthetized my project piece by piece,
sub-module by sub-module to isolate the source file that made him crash.


	Sylvain

Hi Sylvain,

> Last time I got an "Internal Error" with quartus, it just didn't like
> the name of one of my signal ... I just changed the name to another name
> and it worked. Changing it back made it crash again so that was _really_
> the name of the signal.

I have no idea what caused this problem, but if you find something like 
this, we really would like to hear about it.  Especially when you've already 
done our work for us and figured out how and when the problem occurs!

In the future, please file a report on a bug like this with 
mysupport.altera.com!

Thanks,

Paul