From 6f68b4a09f2bbeeaac64a07fb8a6ba010391fac7 Mon Sep 17 00:00:00 2001
From: Aaron Taylor <ataylor@subgeniuskitty.com>
Date: Sat, 2 Jan 2021 18:55:35 -0800
Subject: [PATCH] Add to MMU init: bypass cache in MMIO page

---
 pdp11_mmu.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pdp11_mmu.c b/pdp11_mmu.c
index eb75cbd..a06cf16 100644
--- a/pdp11_mmu.c
+++ b/pdp11_mmu.c
@@ -40,6 +40,9 @@ init_mmu(void)
     KISDR4 = data;
     KISDR5 = data;
     KISDR6 = data;
+
+    SET(data,PDR_BYPASCACHE,1);
+
     KISDR7 = data;
 
     /*
-- 
2.20.1