Open Source VHDL Verification Methodology | Site-Wide Activity https://osvvm.org/activity Activity feed for the entire site. Tue, 22 Sep 2026 13:38:24 +0100 https://buddypress.org/?v= en-US 30 hourly 2 4379b6a7433fee9be4cbe6923a31293e CynthiaGed became a registered member https://osvvm.org/activity/p/11248 Tue, 22 Sep 2026 13:38:24 +0100 0 bc698c293bf4b9a64b9786dae86575ca WilliamMit became a registered member https://osvvm.org/activity/p/11247 Tue, 22 Sep 2026 01:12:35 +0100 0 bd9ac79c2e630d8310429d79d05816e4 LindaHow became a registered member https://osvvm.org/activity/p/11245 Wed, 16 Sep 2026 13:46:34 +0100 0 94b7e068024b6f596f761ec91aa8d5c4 Simon wrote a new post https://osvvm.org/?p=2998 Wed, 16 Sep 2026 09:53:49 +0100 Co-simulation Run-Time Options Introduction When writing a C or C++ program the entry point for execution is a main function which has a prototype definition as shown below: int main (int […]

]]> 0 36f733746025ec7a57e8c0e245b75eee JosephDup became a registered member https://osvvm.org/activity/p/11243 Wed, 16 Sep 2026 00:27:58 +0100 0 89bbbb65abc18d067067dfda311e637f Shinergymse became a registered member https://osvvm.org/activity/p/11242 Sun, 13 Sep 2026 16:47:14 +0100 0 a45c75cb1f6f60156ff18896b69d54ce Valid64x became a registered member https://osvvm.org/activity/p/11241 Fri, 11 Sep 2026 14:03:20 +0100 0 9b7ee98e5a5aca342f0b8a0c9d1d414b Jim Lewis wrote a new post https://osvvm.org/?p=2994 Thu, 10 Sep 2026 04:43:54 +0100 OSVVM 2026.08In July, I went to the FPGA Conference Europe. The 2026.08 release has been inspired by presentations I did, presentations done by my colleagues at PLC2 […]

]]> 0 a89cf2a1de0e0f66144c9e62257642ef Simon changed their profile picture https://osvvm.org/activity/p/11226 Fri, 28 Aug 2026 08:02:49 +0100 0 79cba7b02c8c0eb989189589d69f9c1e Arthur became a registered member https://osvvm.org/activity/p/11212 Wed, 12 Aug 2026 00:19:27 +0100 0 91988ecdda82bbde0dce4d9fc082006e Simon wrote a new post https://osvvm.org/?p=2976 Sat, 08 Aug 2026 11:48:28 +0100 Joint RISC-V Code and Logic Debug with rv32 and OSVVM Co­-simulation Introduction In the previous OSVVM co-simulation article, I wrote about debugging co-simulation programs with GDB and how to add an IDE on top of this to give […]

]]> 0 bba811f91a30e1a4abccdd452801cec1 Arthur became a registered member https://osvvm.org/activity/p/11195 Thu, 30 Jul 2026 12:29:49 +0100 0 caa86f8ff1f3b8087f0b51467f0f2420 Simon wrote a new post https://osvvm.org/?p=2954 Wed, 29 Jul 2026 08:05:42 +0100 Debugging OSVVM Co-simulation Programs Introduction Co-simulation features were added to OSVVM at release 2023.01. This allows C or C++ code to be compiled for the machine hosting a logic simulator […]

]]> 0 3ea13fa8dc49c8ee0fabae6064f804eb Luc became a registered member https://osvvm.org/activity/p/11193 Tue, 28 Jul 2026 07:30:49 +0100 0 e07eaa8e7d1e53c916374b8691497689 jose became a registered member https://osvvm.org/activity/p/11190 Sun, 26 Jul 2026 03:42:24 +0100 0 b2d36eaac84ea0e2d829a1dc25cfc709 Luc became a registered member https://osvvm.org/activity/p/11189 Sat, 25 Jul 2026 11:33:59 +0100 0 8167afd6676a6ec260b25e8372caef8d Georgi became a registered member https://osvvm.org/activity/p/11187 Fri, 24 Jul 2026 13:25:04 +0100 0 d017b9922fca8a209d174fdbfee70884 Jim Lewis wrote a new post https://osvvm.org/?p=2953 Thu, 23 Jul 2026 16:53:40 +0100 Funding OSVVMAfter 25+ years of SynthWorks VHDL training funding OSVVM development, I am searching for additional sources of funding for OSVVM. Due to AI, I am not confident […]

]]> 0 7d572fb9b8a690f50c507b2a59a09990 antonio became a registered member https://osvvm.org/activity/p/11182 Thu, 23 Jul 2026 14:04:37 +0100 0 e1e14e1b328ac5dd4e6fa89046d9047b Jim Lewis replied to the topic Sending an array between processes in the forum OSVVM https://osvvm.org/forums/topic/sending-an-array-between-processes#post-2951 Tue, 14 Jul 2026 21:04:42 +0100 Hi Jon,
The generate process/procedure can be passed the ID of the FIFO and then the information pushed into the FIFO.

The ID of the FIFO is much like a constant. It is being used as a reference into the data structure. The information is then pushed into the data structure. No pesky driver issues at all.

Looking forward the long term…[Read more]

]]> 0 d4b054564078710975807d3339c3cbcf jon started the topic Sending an array between processes in the forum OSVVM https://osvvm.org/forums/topic/sending-an-array-between-processes Tue, 14 Jul 2026 18:42:43 +0100 I have a DUT with an AXI stream input interface that accepts an Ethernet packet. I want to be able to create a testbench to generate packets and input them into the DUT. I have a procedure that accepts some input parameters and then outputs an array of values containing the packet. What would be the best way to pass this array from the generate…[Read more]

]]> 0 c709730e9fa8be7258e013e36e71316b Christopher became a registered member https://osvvm.org/activity/p/11174 Fri, 10 Jul 2026 18:20:09 +0100 0 b0e9d9e687055c1f0227fda217cf3a16 OSVALDO's profile was updated https://osvvm.org/activity/p/11171 Fri, 10 Jul 2026 07:46:38 +0100 0 aa945c06bfc9c5b4044f4a0723255419 Ravi became a registered member https://osvvm.org/activity/p/11165 Mon, 06 Jul 2026 17:36:18 +0100 0 8740ca3ee2e83a52a22676002bed2b4c Lionel became a registered member https://osvvm.org/activity/p/11157 Mon, 29 Jun 2026 21:56:25 +0100 0 d77039594c6f3b9bc7b83c28c10dd6e3 diego became a registered member https://osvvm.org/activity/p/11146 Fri, 26 Jun 2026 07:02:51 +0100 0 da00846485118877e5b63d16bc44b379 PierFrancesco became a registered member https://osvvm.org/activity/p/11145 Wed, 24 Jun 2026 16:11:13 +0100 0 a30bc97e700b1ea32d86564dbb754c7a Christopher became a registered member https://osvvm.org/activity/p/11144 Wed, 24 Jun 2026 10:55:48 +0100 0 a7cd5c9bf7195cc31d5972e0ec361e62 Adrian became a registered member https://osvvm.org/activity/p/11139 Tue, 23 Jun 2026 07:58:22 +0100 0 a9b6e994120d15f49ecb0b1749188314 Jim Lewis wrote a new post https://osvvm.org/?p=2948 Mon, 22 Jun 2026 15:38:58 +0100 2026.05 and AXI4MemoryProblem and Solution In 2026.05, AXI4 Memory is now AXI word width where previously it was byte width. This impacts indirect accesses to the memory using […]

]]> 0 a3a6bc8bb0d31c436d2577cc5a454bd1 Jim Lewis wrote a new post https://osvvm.org/?p=2944 Wed, 17 Jun 2026 14:36:03 +0100 2026.05 and SetAxi4Options/GetAxi4OptionsProblem and Solution In 2026.05, if a test case calls SetAxi4Options/GetAxi4Options at time 0 with a parameter other than an AXI4 bus value (such as BRESP) the […]

]]> 0 c4561b6864d02316c050828b5fca3848 Tasnim became a registered member https://osvvm.org/activity/p/11096 Mon, 08 Jun 2026 15:01:52 +0100 0 b7e27fa343a70bd21ef2c8273ae6cf61 Jim Lewis wrote a new post https://osvvm.org/?p=2933 Sat, 06 Jun 2026 05:12:12 +0100 OSVVM 2026.05OSVVM release 2026.05 adds the following Script Exit on build done Script Bug Fix: two RunTest when running interactively Script bug: […]

]]> 0 05abc25de02dc9ce9c188c4855e1ae00 Simon wrote a new post https://osvvm.org/?p=2914 Wed, 27 May 2026 14:20:21 +0100 Building an OSVVM Co-simulation VC Introduction With the 2026.01 release of OSVVM a new verification component (or VC) was added to support the PCI Express (PCIe) bus protocol. OSVVM already has […]

]]> 0 ec484fb9ca88de018938f8fd60cff999 Gonzalo became a registered member https://osvvm.org/activity/p/11080 Wed, 13 May 2026 12:33:26 +0100 0 7c0abe2717ce7c125a333af03ddb8faf Greg became a registered member https://osvvm.org/activity/p/11076 Fri, 24 Apr 2026 15:31:13 +0100 0 3ed2faca8521897a673f4c0c11d1cd77 Magdalena became a registered member https://osvvm.org/activity/p/11075 Wed, 22 Apr 2026 15:41:13 +0100 0 b696233a13a9133560488fdd4af2d26f jon replied to the topic Checking AXI data when using WSTRB in the forum OSVVM https://osvvm.org/forums/topic/checking-axi-data-when-using-wstrb#post-2910 Sun, 19 Apr 2026 18:12:28 +0100 Hi Jim

I am using the AXI memory model. I think it is all working as it should. I actually tried using the ‘-‘ in the scoreboard data for the inactive bytes. I then used check() and it worked well.
Thanks
Jon

]]> 0 6fbf7d5e7a392f802ea3ee839a284e58 Álvaro became a registered member https://osvvm.org/activity/p/11073 Sat, 18 Apr 2026 15:14:24 +0100 0 7a249505dde3ff270a955aa172ffc4ed Jim Lewis replied to the topic Checking AXI data when using WSTRB in the forum OSVVM https://osvvm.org/forums/topic/checking-axi-data-when-using-wstrb#post-2909 Fri, 17 Apr 2026 03:41:26 +0100 Hi Jon,
Which OSVVM VC are you using?

For AXI4 Manager, it writes a U to memory in locations when WSTRB is 0. The U will not be stored in memory. For reading, there is no indication the data is valid or not. Hence, if your burst FIFO is organized as words, you will need to exclude those bits from comparing to X”020100–“. The ‘-‘ is…[Read more]

]]> 0 cc216128ee59d79c0545dcb505c9e7de Rubén became a registered member https://osvvm.org/activity/p/11071 Thu, 16 Apr 2026 19:01:32 +0100 0 9d27deeb364c03128382a7b0e834e766 jon replied to the topic Checking AXI data when using WSTRB in the forum OSVVM https://osvvm.org/forums/topic/checking-axi-data-when-using-wstrb#post-2908 Wed, 15 Apr 2026 14:48:28 +0100 I just created a function to sero out the unused bytes in the read data and scoreboard data.

]]> 0 987d75d425874754e8bff500617962b2 jon replied to the topic Problem simulating with genrics in the forum OSVVM https://osvvm.org/forums/topic/problem-simulating-with-genrics#post-2907 Wed, 15 Apr 2026 10:42:38 +0100 It looks like the problem was that I was defining the generic as a default value in the testbench top. Doing that I needed to use the -G option. If i delete that statement then the -g option works.

]]> 0 d1145cca1e0c28811771843b3c23878b Jim Lewis replied to the topic Problem simulating with genrics in the forum OSVVM https://osvvm.org/forums/topic/problem-simulating-with-genrics#post-2906 Tue, 14 Apr 2026 19:20:10 +0100 Be sure to try setting the generic defaults via the component (if used) or entity (if component not used).

]]> 0 332108e93fbc087e887640cd02b6eb04 jon replied to the topic Problem simulating with genrics in the forum OSVVM https://osvvm.org/forums/topic/problem-simulating-with-genrics#post-2905 Tue, 14 Apr 2026 18:23:27 +0100 Setting it to -G solved the problem.
Thanks
Jon

]]> 0 8b9c18cb9fca2a04d9e85c45950b6f2d Jim Lewis replied to the topic Problem simulating with genrics in the forum OSVVM https://osvvm.org/forums/topic/problem-simulating-with-genrics#post-2904 Tue, 14 Apr 2026 16:46:12 +0100 In VendorScripts_Questa (if version is 2025 or newer) or VendorScripts_Siemens, the generic switch is set by the following:
# -------------------------------------------------
proc vendor_generic {Name Value} {

return "-g${Name}=${Value}"
}

According to the Questa command reference,
-g <Name>=<Value> …
(optional) Assigns a value to all s…[Read more]

]]> 0 b791b63eafdd5d0d3c216892ae138eac jon replied to the topic Checking AXI data when using WSTRB in the forum OSVVM https://osvvm.org/forums/topic/checking-axi-data-when-using-wstrb#post-2903 Tue, 14 Apr 2026 16:41:11 +0100 But actually I still have the same issue at the end of the burst if the bytes arent a multiple of the bus width.

]]> 0 2b687ba086c7ff12dbea1e146dcb1d26 jon replied to the topic Checking AXI data when using WSTRB in the forum OSVVM https://osvvm.org/forums/topic/checking-axi-data-when-using-wstrb#post-2902 Tue, 14 Apr 2026 16:29:31 +0100 I just realized that I can read the AXI memory using a byte address which then shifts the data into the correct position.

]]> 0 80aa86ba1b7fc160e654eb070488d1d3 jon started the topic Checking AXI data when using WSTRB in the forum OSVVM https://osvvm.org/forums/topic/checking-axi-data-when-using-wstrb Tue, 14 Apr 2026 15:28:59 +0100 I am using the AXI memory to write a burst. The first beat has the WSTRB set to 1110 (first byte no used). I am using a scoreboard to check the data, and I set the expected data to be 020100UU. But when I call check the scoreboard fails. It seems to be checking the full value rather than only the three active bytes. Is this the correct way to do…[Read more]

]]> 0 50782d6ae86d928e4d7aec6b87e4f43f jon replied to the topic Problem with the AXI stream receiver in the forum OSVVM https://osvvm.org/forums/topic/problem-with-the-axi-stream-receiver#post-2900 Tue, 14 Apr 2026 15:25:39 +0100 Hi Jim

Yes that was the issue.
Thanks
Jon

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