diff --git a/Ghidra/Processors/68000/data/languages/68000.sinc b/Ghidra/Processors/68000/data/languages/68000.sinc
index ff97468683..2b721c1de9 100644
--- a/Ghidra/Processors/68000/data/languages/68000.sinc
+++ b/Ghidra/Processors/68000/data/languages/68000.sinc
@@ -1295,6 +1295,10 @@ subdiv: regdr:regdq		is regdq & regdr & divsz=1 & divsgn=1				{ divi:8 = (sext(r
 :ext.l regdn			is op=4 & reg9dn=4 & op68=3 & op35=0 & regdn			{ local tmp =regdn:2; regdn = sext(tmp); }
 :extb.l regdn			is op=4 & reg9dn=4 & op68=7 & op35=0 & regdn			{ local tmp =regdn:1; regdn = sext(tmp); }
 
+@ifdef COLDFIRE
+:halt			is d16=0x4ac8							unimpl
+@endif
+
 :illegal			is d16=0x4afc							unimpl
 
 # jump addresses derived from effective address calculation
@@ -2006,7 +2010,7 @@ ptestLevel: "#"^mregn	is mregn  { export *[const]:1 mregn; }
 :tst.l eal			is (opbig=0x4a & op67=2)... & eal				{ logflags(); resflags(eal); }
 
 @ifdef COLDFIRE
-:tas eab			is (opbig=0x4a & op67=3)... & eab				{ logflags(); resflags(eab); eab = eab | 0x80; } 
+:tas eab			is (opbig=0x4a & op67=3 & $(MEM_ALTER_ADDR_MODES))... & eab				{ logflags(); resflags(eab); eab = eab | 0x80; }
 @endif # COLDFIRE
 
 :unlk regan			is opbig=0x4e & op37=11 & regan					{ SP = regan; regan = *SP; SP = SP+4; }