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author Olivier Galibert <galibert@pobox.com>2019-12-21 20:25:56 +0100
committer Olivier Galibert <galibert@pobox.com>2019-12-21 20:25:56 +0100
commit42f5ceb3dbfd4e812a3086f58006b3c197d3c546 (patch)
treea2afc1f9b2c03209b868397f4d5bee171d3b9cd4
parentbaf3b3031506b0fc6f02be7d4466b2ab0d524a12 (diff)
model1: Paranoia on atan [O. Galibert]
-rw-r--r--src/mame/machine/model1.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mame/machine/model1.cpp b/src/mame/machine/model1.cpp
index bbb63eb7314..123b46c97a7 100644
--- a/src/mame/machine/model1.cpp
+++ b/src/mame/machine/model1.cpp
@@ -231,7 +231,7 @@ WRITE32_MEMBER(model1_state::copro_atan_w)
READ32_MEMBER(model1_state::copro_atan_r)
{
- u32 idx = m_copro_atan_base[3];
+ u32 idx = m_copro_atan_base[3] & 0xffff;
if(idx & 0xc000)
idx = 0x3fff;
u32 result = m_copro_tables[idx | 0x4000];