same file), errors (buffer output pin name, power supplies not
passed at the top level). Corrected a major error that prevented
the use of the buffers in simulation, so this was not previously
verified by simulation. The buffering has now been properly
verified.
gpio_signal_buffering (gpio_signal_buffering_alt in caravan).
Note that this macro requires manual placement and routing, like
the padframe, and the top level will need to route around its own
internal routes.