summaryrefslogtreecommitdiff
path: root/README
diff options
context:
space:
mode:
authorClifford Wolf <clifford@clifford.at>2015-04-24 22:04:05 +0200
committerClifford Wolf <clifford@clifford.at>2015-04-24 22:04:05 +0200
commit49859393bbddfe9445757f3df0ff573c9072a594 (patch)
treeb6aa1b32b1ae03c5427fcf3463c11ad274848568 /README
parent687f5a5b12b41c4e26c9e5b8d3815c268a7ff7be (diff)
Improved attributes API and handling of "src" attributes
Diffstat (limited to 'README')
-rw-r--r--README5
1 files changed, 5 insertions, 0 deletions
diff --git a/README b/README
index af78a31c..3f5e61dd 100644
--- a/README
+++ b/README
@@ -300,6 +300,11 @@ Verilog Attributes and non-standard features
with "-top". Other commands, such as "flatten" and various backends
use this attribute to determine the top module.
+- The "src" attribute is set on cells and wires created by to the string
+ "<hdl-file-name>:<line-number>" by the HDL front-end and is then carried
+ through the synthesis. When entities are combined, a new |-separated
+ string is created that contains all the string from the original entities.
+
- In addition to the (* ... *) attribute syntax, yosys supports
the non-standard {* ... *} attribute syntax to set default attributes
for everything that comes after the {* ... *} statement. (Reset