diff options
| author | whitequark <whitequark@whitequark.org> | 2019-10-03 06:10:43 +0000 |
|---|---|---|
| committer | whitequark <whitequark@whitequark.org> | 2019-10-03 06:16:18 +0000 |
| commit | 50acf4a72433a22bbe6a8162deb7b959370a0a15 (patch) | |
| tree | 770bbba1604d006c2e6faffcbd0b261360c4c309 /nmigen_boards | |
| parent | c7c637043817eae6f48c33b707b40c9c1b20f199 (diff) | |
[breaking-change] Fix polarity of "dm" signal in "memory" resource.
LB# and UB# enable writing their corresponding byte. The "m" in "dm"
means mask; that is, logical high masks (prevents) the byte from
being written. This means that it should use Pins(), not PinsN(),
to get the behavior implied by "mask".
Diffstat (limited to 'nmigen_boards')
| -rw-r--r-- | nmigen_boards/resources/memory.py | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/nmigen_boards/resources/memory.py b/nmigen_boards/resources/memory.py index 809035c..33976a7 100644 --- a/nmigen_boards/resources/memory.py +++ b/nmigen_boards/resources/memory.py @@ -90,7 +90,7 @@ def SRAMResource(*args, cs, oe=None, we, a, d, dm=None, attrs=None): io.append(Subsignal("a", Pins(a, dir="o"))) io.append(Subsignal("d", Pins(d, dir="io"))) if dm is not None: - io.append(Subsignal("dm", PinsN(dm, dir="o"))) # dm="LB# UB#" + io.append(Subsignal("dm", Pins(dm, dir="o"))) # dm="LB# UB#" if attrs is not None: io.append(attrs) return Resource.family(*args, default_name="sram", ios=io) |