Re: Asynchronous double port RAM

Le 11/01/2016 14:26, Josy Boelen a écrit :
> Hi Nicolas,
>
> I slightly modified your code to have Quartus Prime infer a RAM :)
>
>      @myhdl.always(clka.posedge)
>      def portA():
>          doa.next = ram[addra]
>          if ena :
>              if wea :
>                  ram[addra].next = dia
>
>      @myhdl.always(clkb.posedge)
>      def portB():
>          dob.next = ram[addrb]
>          if enb :
>              if web :
>                  ram[addrb].next = dib
> as Quartus needs a register on the output path I moved the read-
> statement before the enable.
>
> Apparently Quartus Prime has no problem with *ram* being a *signal*
> rather than a *shared variable*. Although in  the "Recommended HDL
> Coding Styles" they also show the example with a *shared variable*.
>
> I have no idea whether Vivado and ISE are also forgiving.
The code I sent in my first message has been formatted following Xilinx 
rules.
However, I did not tried to compile it with Xilinx tools. I'll have a 
try and tell you.
>
> Your other request: initialising the ram-array is not that much work.
> I'll try to submit a PR shortly.
That's good news :)

Thanks
Nicolas
>
> Regards,
>
> JOsy
>
>
>
> ------------------------------------------------------------------------------
> Site24x7 APM Insight: Get Deep Visibility into Application Performance
> APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month
> Monitor end-to-end web transactions and take corrective actions now
> Troubleshoot faster and improve end-user experience. Signup Now!
> http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140
> _______________________________________________
> myhdl-list mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/myhdl-list
> .
>


-- 
*Nicolas PINAULT
R&D electronics engineer
*** [email protected] <mailto:[email protected]>

*AATON-Digital*
38000 Grenoble - France
Tel +33 4 7642 9550

http://www.aaton.com
http://www.transvideo.eu
French Technologies for Film and Digital Cinematography

Follow us on Twitter
@Aaton_Digital
@Transvideo_HD

Like us on Facebook
https://www.facebook.com/AatonDigital

------------------------------------------------------------------------------
Site24x7 APM Insight: Get Deep Visibility into Application Performance
APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month
Monitor end-to-end web transactions and take corrective actions now
Troubleshoot faster and improve end-user experience. Signup Now!
http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140

_______________________________________________
myhdl-list mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/myhdl-list