4 commits

Author	SHA1	Message	Date
whitequark	1eee7cd76f	lib.io: allow dir="oe". ... Although a dir="oe" pin is generally equivalent to dir="io" pin with the i* signal(s) disconnected, they are not equivalent, because some pins may not be able to support input buffers at all, either because there are no input buffers, or because the input buffers are consumed by some other resource. E.g. this can happen on iCE40 when the input buffer is consumed by a PLL.	2019-06-03 04:28:53 +00:00
whitequark	c30617fc05	lib.io: allow Pin(xdr=0), representing a combinatorial I/O buffer.	2019-06-03 03:36:32 +00:00
whitequark	2b7dc37ffe	hdl.rec: allow providing fields during construction. ... This allows creating records populated with e.g. signals with custom names, or sub-records that are instances of Record subclasses.	2019-05-25 22:06:56 +00:00
whitequark	287a0531b3	lib.io: rework TSTriple/Tristate interface to use pin_layout/Pin.	2019-04-15 16:27:23 +00:00