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5 Commits

Author SHA1 Message Date
whitequark 5beab5bc17 cxxrtl: provide a way to perform unobtrusive power-on reset. 
Although it is always possible to destroy and recreate the design to
simulate a power-on reset, this has two drawbacks:
  * Black boxes are also destroyed and recreated, which causes them
    to reacquire their resources, which might be costly and/or erase
    important state.
  * Pointers into the design are invalidated and have to be acquired
    again, which is costly and might be very inconvenient if they are
    captured elsewhere (especially through the C API).
 2020-12-02 08:25:27 +00:00
whitequark 5349a922e4 cxxrtl: expose eval() and commit() via the C API. 2020-07-12 23:34:18 +00:00
whitequark 8d712b1095 cxxrtl: handle multipart signals. 
This avoids losing design visibility when using the `splitnets` pass.
 2020-06-11 19:34:35 +00:00
whitequark 31f6c96b1f cxxrtl: add a C API for writing VCD dumps. 
This C API is fully featured.
 2020-06-07 03:48:00 +00:00
whitequark c399359ed6 cxxrtl: add a C API for driving and introspecting designs. 
Compared to the C++ API, the C API currently has two limitations:
  1. Memories cannot be updated in a race-free way.
  2. Black boxes cannot be implemented in C.
 2020-06-06 21:12:55 +00:00