diff options
Diffstat (limited to 'backends/cxxrtl/cxxrtl_capi.h')
| -rw-r--r-- | backends/cxxrtl/cxxrtl_capi.h | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/backends/cxxrtl/cxxrtl_capi.h b/backends/cxxrtl/cxxrtl_capi.h index bee5a94c7..46aa662b2 100644 --- a/backends/cxxrtl/cxxrtl_capi.h +++ b/backends/cxxrtl/cxxrtl_capi.h @@ -64,9 +64,10 @@ enum cxxrtl_type { // Values correspond to singly buffered netlist nodes, i.e. nodes driven exclusively by // combinatorial cells, or toplevel input nodes. // - // Values can be inspected via the `curr` pointer and modified via the `next` pointer (which are - // equal for values); however, note that changes to the bits driven by combinatorial cells will - // be ignored. + // Values can be inspected via the `curr` pointer. If the `next` pointer is NULL, the value is + // driven by a constant and can never be modified. Otherwise, the value can be modified through + // the `next` pointer (which is equal to `curr` if not NULL). Note that changes to the bits + // driven by combinatorial cells will be ignored. // // Values always have depth 1. CXXRTL_VALUE = 0, @@ -75,8 +76,8 @@ enum cxxrtl_type { // storage cells, or by combinatorial cells that are a part of a feedback path. // // Wires can be inspected via the `curr` pointer and modified via the `next` pointer (which are - // distinct for wires); however, note that changes to the bits driven by combinatorial cells will - // be ignored. + // distinct for wires). Note that changes to the bits driven by combinatorial cells will be + // ignored. // // Wires always have depth 1. CXXRTL_WIRE = 1, |