From 4de85f0ef53bd890bd87f3057763dc7f77b66155 Mon Sep 17 00:00:00 2001
From: Cassie Jones <code@witchoflight.com>
Date: Sat, 27 Apr 2019 14:23:22 -0400
Subject: [PATCH] Add the beginning of a redstone liberty file

---
 minecraft.lib | 80 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 minecraft.lib

diff --git a/minecraft.lib b/minecraft.lib
new file mode 100644
index 0000000..5875b29
--- /dev/null
+++ b/minecraft.lib
@@ -0,0 +1,80 @@
+// A cell library for redstone circuits
+library(redstone) {
+  cell(REPEATER) {
+    area: 3;
+    pin(A) { direction: input; }
+    pin(Y) { direction: output; function: "A"; }
+  }
+  // @TODO: Nail down how we count area.
+  cell(NOT) {
+    area: 4;
+    pin(A) { direction: input; }
+    pin(Y) { direction: output; function: "!A"; }
+  }
+  cell(AND) {
+    area: 10;
+    pin(A) { direction: input; }
+    pin(B) { direction: input; }
+    pin(Y) { direction: output; function: "A & B"; }
+  }
+  cell(NAND) {
+    area: 9;
+    pin(A,B) { direction: input; }
+    pin(Y) { direction: output; function: "!(A & B)"; }
+  }
+  cell(OR) {
+    area: 3;
+    pin(A) { direction: input; }
+    pin(B) { direction: input; }
+    pin(Y) { direction: output; function: "A | B"; }
+  }
+  cell(NOR) {
+    area: 4;
+    pin(A) { direction: input; }
+    pin(B) { direction: input; }
+    pin(Y) { direction: output; function: "!(A | B)"; }
+  }
+  cell(AND3) {
+    area: 16;
+    pin(A) { direction: input; }
+    pin(B) { direction: input; }
+    pin(C) { direction: input; }
+    pin(Y) { direction: output; function: "A & B & C"; }
+  }
+  cell(NAND3) {
+    area: 15;
+    pin(A) { direction: input; }
+    pin(B) { direction: input; }
+    pin(C) { direction: input; }
+    pin(Y) { direction: output; function: "!(A & B & C)"; }
+  }
+  cell(OR3) {
+    area: 4;
+    pin(A) { direction: input; }
+    pin(B) { direction: input; }
+    pin(C) { direction: input; }
+    pin(Y) { direction: output; function: "A | B | C"; }
+  }
+  cell(NOR3) {
+    area: 5;
+    pin(A) { direction: input; }
+    pin(B) { direction: input; }
+    pin(C) { direction: input; }
+    pin(Y) { direction: output; function: "!(A | B | C)"; }
+  }
+  cell(DFF_P) {
+    area: 8;
+    ff(IQ, IQN) { clocked_on: C; next_state: D; }
+    pin(C) { direction: input; clock: true; }
+    pin(D) { direction: input; }
+    pin(Q) { direction: output; function: "IQ"; }
+  }
+  cell(DFF_N) {
+    area: 8;
+    ff(IQ, IQN) { clocked_on: "!C"; next_state: D; }
+    pin(C) { direction: input; clock: true; }
+    pin(D) { direction: input; }
+    pin(Q) { direction: output; function: "IQ"; }
+  }
+  // @TODO: Is there a good DFFE design?
+}
-- 
2.47.0