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| ID | Category | Severity | Date Submitted | Last Update | |||
| 0000594 | [SystemVerilog P1800] SV-EC | major | 2005-03-23 17:29 | 2008-05-14 23:41 | |||
| Reporter | Steven Sharp | View Status | public | ||||
| Assigned To | doug_warmke | ||||||
| Priority | immediate | Resolution | fixed | ||||
| Status | closed | Product Version | |||||
| Summary | 0000594: 15.8 special syntax for accessing interfaces through clocking block | ||||||
| Description |
Erratum entered for another reviewer. Section 15.8 describes in great detail a special syntax for use in accessing items within interfaces through a clocking block. Unfortunately, this special syntax is not supported by the BNF. Further, it would be inadvisable for the BNF to support this special syntax. Essentially the syntax allows a hierarchical identifier to be used in defining a local clockvar variable. This significantly breaks the entire concept of using '.' as a separator between scope or members. Rather than have such a special syntax this semantic functionality can simply be achieved through the use of a hierarchical identifier as described by section 15.4. We can, however, understand that the user may wish to have special syntax used for interacting with interfaces. A much more consistent way to achieve this would be to follow the standard scoping rules of Verilog and create an additional sub-scope within a clocking block. In fact we could even re-use the keyword interface to achieve this. Broken Example: module M(interface I, wire clk); clocking block @(clk); input I.signal; // broken syntax endclocking endmodule Recommended Syntax to achieve the same functionality: module M(interface I, wire clk); clocking block @(clk); interface I; input signal; // working syntax endinterface; endclocking endmodule Note that if the above recommendation can not be achieved, then the next best recommendation is to remove section 15.8 from the LRM and simply use the functionality of section 15.4 to access within interfaces. It is not recommended that we attempt to footnote this or somehow squeeze it into the BNF. |
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| Additional Information |
Approved on October/9/2006 unanimously. 594_1.pdf is approved. Updated Status/Resolution field according to SV_DB_process guide. Resolved.Fixed. Text change/addition. |
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| Tags | No tags attached. | ||||||
| Type | Errata | ||||||
| Attached Files |
 SV-594.htm [^] (39,494 bytes) 2006-09-09 14:20 SV-594-1.htm [^] (41,779 bytes) 2006-10-09 12:40 SV-594-1.pdf [^] (30,637 bytes) 2006-10-09 12:58 SV-594-1_forD3a.htm [^] (45,180 bytes) 2007-08-17 14:18 SV-594-1_forD3a.pdf [^] (24,119 bytes) 2007-08-17 14:18 |
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Notes |
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 (0002944)doug_warmke (developer) 2006-09-09 14:22 |
Uploaded attached proposal. The proposal shows how the section would look without the special syntax that is not allowed in the BNF. Without that special syntax, though, this section doesn't contribute any new features, rules, or restrictions to the language. Instead it seems to serve only as a style guideline on how one can effectively use interfaces, programs, and clocking blocks together. That isn't bad in my opinion. However, one might argue for the deletion of the entire section. That would be OK with me, too. |
 (0004057)Dave Rich (manager) 2007-08-07 17:29 |
15.8 is now 14.9. |
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(0004121) doug_warmke (developer) 2007-08-17 14:17 |
Made changes in section numbering to correspond to P1800-2008_draft3a. |
 (0004448)Neil Korpusik (administrator) 2007-09-10 18:34 |
Sent back to the Technical Committee by the Champions in the August 15, 2007 conference call (a large number of Mantis items were sent back as a group). No specific issues raised - requested Technical Committee to re-check. |
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(0004449) Neil Korpusik (administrator) 2007-09-10 18:34 |
Unanimously approved by the Champions in the August 29, 2007 email vote |
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(0004450) Neil Korpusik (administrator) 2007-09-10 18:34 |
Unanimously approved by the P1800 Working Group in the August 30, 2007 conference call. |
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(0004457) Neil Korpusik (administrator) 2007-09-11 10:01 |
Attempting to get to Editor status (by way of review) |
 (0004803)Stuart Sutherland (manager) 2007-10-03 19:56 |
Corrected in P1800-2008 draft 4. |
 (0006835)mehdi_mohtashemi (manager) 2008-05-14 23:40 |
Verirfied in Draft5. |
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Issue History |
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| Date Modified | Username | Field | Change |
| 2005-03-23 17:29 | Steven Sharp | New Issue | |
| 2005-03-23 17:29 | Steven Sharp | Type | => Errata |
| 2005-04-13 08:08 | chas | Priority | normal => immediate |
| 2006-09-09 14:19 | doug_warmke | Status | new => assigned |
| 2006-09-09 14:19 | doug_warmke | Assigned To | => doug_warmke |
| 2006-09-09 14:20 | doug_warmke | File Added: SV-594.htm | |
| 2006-09-09 14:22 | doug_warmke | Note Added: 0002944 | |
| 2006-09-09 23:33 | shalom | Issue Monitored: shalom | |
| 2006-10-09 12:31 | doug_warmke | Summary | 16.8 special syntax for accessing interfaces through clocking block => 15.8 special syntax for accessing interfaces through clocking block |
| 2006-10-09 12:31 | doug_warmke | Description Updated | |
| 2006-10-09 12:40 | doug_warmke | File Added: SV-594-1.htm | |
| 2006-10-09 12:58 | doug_warmke | File Added: SV-594-1.pdf | |
| 2006-10-22 21:31 | mehdi_mohtashemi | Status | assigned => resolved |
| 2006-10-22 21:31 | mehdi_mohtashemi | Resolution | open => fixed |
| 2006-10-22 21:31 | mehdi_mohtashemi | Additional Information Updated | |
| 2007-08-07 17:29 | Dave Rich | Note Added: 0004057 | |
| 2007-08-17 14:17 | doug_warmke | Status | resolved => feedback |
| 2007-08-17 14:17 | doug_warmke | Resolution | fixed => reopened |
| 2007-08-17 14:17 | doug_warmke | Note Added: 0004121 | |
| 2007-08-17 14:18 | doug_warmke | File Added: SV-594-1_forD3a.htm | |
| 2007-08-17 14:18 | doug_warmke | File Added: SV-594-1_forD3a.pdf | |
| 2007-08-17 14:19 | doug_warmke | Status | feedback => resolved |
| 2007-08-17 14:19 | doug_warmke | Resolution | reopened => fixed |
| 2007-09-10 18:34 | Neil Korpusik | Note Added: 0004448 | |
| 2007-09-10 18:34 | Neil Korpusik | Note Added: 0004449 | |
| 2007-09-10 18:34 | Neil Korpusik | Note Added: 0004450 | |
| 2007-09-10 18:34 | Neil Korpusik | Status | resolved => approved |
| 2007-09-11 10:01 | Neil Korpusik | Note Added: 0004457 | |
| 2007-09-11 10:01 | Neil Korpusik | Status | approved => review |
| 2007-09-11 10:02 | Neil Korpusik | Status | review => editor |
| 2007-10-03 19:56 | Stuart Sutherland | Status | editor => completed |
| 2007-10-03 19:56 | Stuart Sutherland | Fixed in Version | => P1800-2008/D4 |
| 2007-10-03 19:56 | Stuart Sutherland | Note Added: 0004803 | |
| 2008-05-14 23:40 | mehdi_mohtashemi | Note Added: 0006833 | |
| 2008-05-14 23:40 | mehdi_mohtashemi | Note Added: 0006834 | |
| 2008-05-14 23:40 | mehdi_mohtashemi | Note Added: 0006835 | |
| 2008-05-14 23:41 | mehdi_mohtashemi | Status | completed => closed |
| 2008-05-14 23:42 | mehdi_mohtashemi | Note Deleted: 0006833 | |
| 2008-05-14 23:42 | mehdi_mohtashemi | Note Deleted: 0006834 | |
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