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-rw-r--r--src/devices/cpu/m68000/m68kfpu.cpp7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/devices/cpu/m68000/m68kfpu.cpp b/src/devices/cpu/m68000/m68kfpu.cpp
index 7cd10e84b84..c265bf2b2f7 100644
--- a/src/devices/cpu/m68000/m68kfpu.cpp
+++ b/src/devices/cpu/m68000/m68kfpu.cpp
@@ -1454,6 +1454,13 @@ void m68000_base_device::fpgen_rm_reg(u16 w2)
m_icount -= 594; // for MC68881
break;
}
+ case 0x0a: // FATAN
+ {
+ m_fpr[dst] = floatx80_fatan (source);
+ SET_CONDITION_CODES(m_fpr[dst]);
+ m_icount -= 426; // for MC68881
+ break;
+ }
case 0x0e: // FSIN
{
m_fpr[dst] = source;