diff --git a/src/emu/cpu/m6809/base6x09.ops b/src/emu/cpu/m6809/base6x09.ops
index c0a1f59c0db..ba4f9e223f0 100644
--- a/src/emu/cpu/m6809/base6x09.ops
+++ b/src/emu/cpu/m6809/base6x09.ops
@@ -165,7 +165,7 @@ ASR16:
 	@m_temp.b.l = read_operand(1);
 	m_cc &= ~CC_NZC;
 	m_cc |= (m_temp.b.l & 1) ? CC_C : 0;
-	m_temp.w = set_flags<UINT16>(CC_NZ, ((INT16) m_temp.b.l) >> 1);
+	m_temp.w = set_flags<UINT16>(CC_NZ, ((INT16) m_temp.w) >> 1);
 	@eat(hd6309_native_mode() ? 0 : 1);
 	@write_operand(0, m_temp.b.h);
 	write_operand(1, m_temp.b.l);
diff --git a/src/emu/cpu/m6809/konami.ops b/src/emu/cpu/m6809/konami.ops
index 274ee7e6798..ec39ccda88b 100644
--- a/src/emu/cpu/m6809/konami.ops
+++ b/src/emu/cpu/m6809/konami.ops
@@ -517,7 +517,7 @@ LSRD:
 		else
 			m_cc &= ~CC_C;
 
-		m_d.w = set_flags<UINT16>(CC_NZ, safe_shift_right<INT16>(m_d.w, m_temp.b.l));
+		m_d.w = set_flags<UINT16>(CC_NZ, safe_shift_right<UINT16>(m_d.w, m_temp.b.l));
 	}
 	eat(1);
 	return;
@@ -582,7 +582,7 @@ ABS8:
 ABS16:
 	@m_temp.b.h = read_operand(0);
 	@m_temp.b.l = read_operand(1);
-	m_temp.w = set_flags<UINT16>(CC_NZVC, 0, m_temp.w, ((INT8) m_temp.w) >= 0 ? m_temp.w : -m_temp.w);
+	m_temp.w = set_flags<UINT16>(CC_NZVC, 0, m_temp.w, ((INT16) m_temp.w) >= 0 ? m_temp.w : -m_temp.w);
 	@eat(1);
 	@write_operand(0, m_temp.b.h);
 	write_operand(1, m_temp.b.l);