From 3b76fd6f9154b7c01414f8b3f57cf0378109d1a6 Mon Sep 17 00:00:00 2001
From: Warrick Lo <wlo@warricklo.net>
Date: Sat, 20 Jun 2026 20:18:38 +0000
Subject: Add basic ALU skeleton

Signed-off-by: Warrick Lo <wlo@warricklo.net>
---
 rtl/montreal_pkg.sv | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 rtl/montreal_pkg.sv

(limited to 'rtl/montreal_pkg.sv')

diff --git a/rtl/montreal_pkg.sv b/rtl/montreal_pkg.sv
new file mode 100644
index 0000000..741a926
--- /dev/null
+++ b/rtl/montreal_pkg.sv
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: CERN-OHL-P-2.0 */
+
+package montreal_pkg;
+
+  typedef logic unsigned [config_pkg::XLEN-1:0]        word_t;
+  typedef logic unsigned [config_pkg::SLICE_WIDTH-1:0] slice_t;
+
+  typedef enum logic [3:0] {
+    /* Arithmetic operations. */
+    ADD       = 4'b0000,
+    SUB       = 4'b1000,
+    /* Logical operations. */
+    XOR       = 4'b0100,
+    OR        = 4'b0110,
+    AND       = 4'b0111,
+    /* Shift operations. */
+    SLL       = 4'b0001,
+    SRL       = 4'b0101,
+    SRA       = 4'b1101,
+    /* Conditional set operations. */
+    SLT       = 4'b0010,
+    SLTU      = 4'b0011,
+    /* Zicond operations. */
+    CZERO_EQZ = 4'b1001,
+    CZERO_NEZ = 4'b1011
+  } fu_op_t;
+
+endpackage : montreal_pkg
-- 
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