From ff66523bb076a246c2fc159f0f76947bd6f84fc1 Mon Sep 17 00:00:00 2001
From: Julian Blake Kongslie
Date: Sat, 29 Oct 2022 12:55:08 -0700
Subject: Control register values should not be "unsigned int"

---
 isa/isa.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'isa/isa.h')

diff --git a/isa/isa.h b/isa/isa.h
index 1ad5a77..84a783c 100644
--- a/isa/isa.h
+++ b/isa/isa.h
@@ -1,5 +1,6 @@
 #pragma once
 
+#include <cstdint>
 #include <functional>
 #include <optional>
 
@@ -49,7 +50,7 @@ struct instruction_context {
     unsigned int next_pc;                       // includes IF
     std::optional<unsigned int> init_address;   // includes DF
     std::optional<unsigned int> final_address;  // includes DF
-    std::optional<unsigned int> ctlval;
+    std::optional<std::uint_fast32_t> ctlval;   // control registers may be larger than 16 bits (e.g. TT_BITS)
     std::optional<unsigned int> data;
     std::optional<unsigned int> acc;
     std::optional<bool> link;
-- 
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