From 6653ef7e7c1698f77f38fe9a7c6a5d95762fcd82 Mon Sep 17 00:00:00 2001
From: Anton Lydike <anton@lydike.com>
Date: Tue, 25 May 2021 11:14:52 +0200
Subject: [PATCH] [CPU] set correct MISA

---
 riscemu/priv/PrivCPU.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/riscemu/priv/PrivCPU.py b/riscemu/priv/PrivCPU.py
index 6916cc1..43fd4df 100644
--- a/riscemu/priv/PrivCPU.py
+++ b/riscemu/priv/PrivCPU.py
@@ -131,11 +131,11 @@ class PrivCPU(CPU):
     def _init_csr(self):
         # set up CSR
         self.csr = CSR()
-        # TODO: Actually populate the CSR with real data (vendorID, heartID, machine implementation etc)
         self.csr.set('mhartid', 0)  # core id
+        # TODO: set correct value
         self.csr.set('mimpid', 1)  # implementation id
-        # TODO: set correct misa
-        self.csr.set('misa', 1)  # available ISA
+        # set mxl to 1 (32 bit) and set bits for i and m isa
+        self.csr.set('misa', (1 << 30) + (1 << 8) + (1 << 12))  # available ISA
 
         @self.csr.callback('halt')
         def halt(old: int, new: int):