diff --git a/constants.py b/constants.py
index 9ff08c05..1298aa7b 100644
--- a/constants.py
+++ b/constants.py
@@ -47,6 +47,14 @@
         v = (int(row[1]), int(row[2]))
         arg_lut[k] = v
 
+# for mop
+arg_lut['mop_r_t_30'] = (30,30)
+arg_lut['mop_r_t_27_26'] = (27,26)
+arg_lut['mop_r_t_21_20'] = (21, 20)
+arg_lut['mop_rr_t_30'] = (30,30)
+arg_lut['mop_rr_t_27_26'] = (27, 26)
+arg_lut['c_mop_t'] = (10,8)
+
 # dictionary containing the mapping of the argument to the what the fields in
 # the latex table should be
 latex_mapping = {}
@@ -156,4 +164,53 @@
     'srli_rv128',
     'srli_rv32',
     'umax32',
+    'c_mop_1',
+    'c_mop_3',
+    'c_mop_5',
+    'c_mop_7',
+    'c_mop_9',
+    'c_mop_11',
+    'c_mop_13',
+    'c_mop_15',
+    'mop_r_0',
+    'mop_r_1',
+    'mop_r_2',
+    'mop_r_3',
+    'mop_r_4',
+    'mop_r_5',
+    'mop_r_6',
+    'mop_r_7',
+    'mop_r_8',
+    'mop_r_9',
+    'mop_r_10',
+    'mop_r_11',
+    'mop_r_12',
+    'mop_r_13',
+    'mop_r_14',
+    'mop_r_15',
+    'mop_r_16',
+    'mop_r_17',
+    'mop_r_18',
+    'mop_r_19',
+    'mop_r_20',
+    'mop_r_21',
+    'mop_r_22',
+    'mop_r_23',
+    'mop_r_24',
+    'mop_r_25',
+    'mop_r_26',
+    'mop_r_27',
+    'mop_r_28',
+    'mop_r_29',
+    'mop_r_30',
+    'mop_r_31',
+    'mop_r_32',
+    'mop_rr_0',
+    'mop_rr_1',
+    'mop_rr_2',
+    'mop_rr_3',
+    'mop_rr_4',
+    'mop_rr_5',
+    'mop_rr_6',
+    'mop_rr_7',
 ]
diff --git a/unratified/rv_zcmop b/unratified/rv_zcmop
index f58b7dfc..742a3d81 100644
--- a/unratified/rv_zcmop
+++ b/unratified/rv_zcmop
@@ -1,13 +1,15 @@
 # Eight code points in the 16-bit encoding space
-# are provided for MOPs; encoded in the reserved
-# encoding space where c.lui N, 0 is encoded i.e
-# Where N is determined for c.mop.M as M*2+1
+# are provided for MOPs; c.mop.N is encoded in
+# the reserved encoding space where c.lui N, 0 is
+# encoded. N ={1, 3, 5, 7, 9, 11, 13, and 15}
+# Add a pseudo-inst c.mop.N that matches c.mop.*
 
-c.mop.0 1..0=1 6..2=0 11..7=1  12=0 15..13=3
-c.mop.1 1..0=1 6..2=0 11..7=3  12=0 15..13=3
-c.mop.2 1..0=1 6..2=0 11..7=5  12=0 15..13=3
-c.mop.3 1..0=1 6..2=0 11..7=7  12=0 15..13=3
-c.mop.4 1..0=1 6..2=0 11..7=9  12=0 15..13=3
-c.mop.5 1..0=1 6..2=0 11..7=11 12=0 15..13=3
-c.mop.6 1..0=1 6..2=0 11..7=13 12=0 15..13=3
-c.mop.7 1..0=1 6..2=0 11..7=15 12=0 15..13=3
+c.mop.N c_mop_t 1..0=1 6..2=0 11=0 7=1 12=0 15..13=3
+$pseudo_op rv_zcmop::c.mop.N c.mop.1 1..0=1 6..2=0 11..7=1  12=0 15..13=3
+$pseudo_op rv_zcmop::c.mop.N c.mop.3 1..0=1 6..2=0 11..7=3  12=0 15..13=3
+$pseudo_op rv_zcmop::c.mop.N c.mop.5 1..0=1 6..2=0 11..7=5  12=0 15..13=3
+$pseudo_op rv_zcmop::c.mop.N c.mop.7 1..0=1 6..2=0 11..7=7  12=0 15..13=3
+$pseudo_op rv_zcmop::c.mop.N c.mop.9 1..0=1 6..2=0 11..7=9  12=0 15..13=3
+$pseudo_op rv_zcmop::c.mop.N c.mop.11 1..0=1 6..2=0 11..7=11 12=0 15..13=3
+$pseudo_op rv_zcmop::c.mop.N c.mop.13 1..0=1 6..2=0 11..7=13 12=0 15..13=3
+$pseudo_op rv_zcmop::c.mop.N c.mop.15 1..0=1 6..2=0 11..7=15 12=0 15..13=3
diff --git a/unratified/rv_zimop b/unratified/rv_zimop
index 30e0fd78..c1dcea04 100644
--- a/unratified/rv_zimop
+++ b/unratified/rv_zimop
@@ -1,49 +1,53 @@
 # The Zimop extension defines 32 MOP instructions named mop.r.0 -- mop.r.31.
 # They are encoded as 1-00--0111--sssss100ddddd1110011, where - denotes an
 # available opcode bit, s denotes the rs1 field, and d denotes the rd field.
+# add a pseudo-inst mop.r.N that matches mop.r.*
 
-mop.r.0  rd rs1 30=0 27=0 26=0 21=0 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.1  rd rs1 30=0 27=0 26=0 21=0 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.2  rd rs1 30=0 27=0 26=0 21=1 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.3  rd rs1 30=0 27=0 26=0 21=1 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.4  rd rs1 30=0 27=0 26=1 21=0 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.5  rd rs1 30=0 27=0 26=1 21=0 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.6  rd rs1 30=0 27=0 26=1 21=1 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.7  rd rs1 30=0 27=0 26=1 21=1 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.8  rd rs1 30=0 27=1 26=0 21=0 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.9  rd rs1 30=0 27=1 26=0 21=0 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.10 rd rs1 30=0 27=1 26=0 21=1 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.11 rd rs1 30=0 27=1 26=0 21=1 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.12 rd rs1 30=0 27=1 26=1 21=0 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.13 rd rs1 30=0 27=1 26=1 21=0 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.14 rd rs1 30=0 27=1 26=1 21=1 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.15 rd rs1 30=0 27=1 26=1 21=1 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.16 rd rs1 30=1 27=0 26=0 21=0 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.17 rd rs1 30=1 27=0 26=0 21=0 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.18 rd rs1 30=1 27=0 26=0 21=1 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.19 rd rs1 30=1 27=0 26=0 21=1 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.20 rd rs1 30=1 27=0 26=1 21=0 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.21 rd rs1 30=1 27=0 26=1 21=0 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.22 rd rs1 30=1 27=0 26=1 21=1 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.23 rd rs1 30=1 27=0 26=1 21=1 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.24 rd rs1 30=1 27=1 26=0 21=0 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.25 rd rs1 30=1 27=1 26=0 21=0 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.26 rd rs1 30=1 27=1 26=0 21=1 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.27 rd rs1 30=1 27=1 26=0 21=1 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.28 rd rs1 30=1 27=1 26=1 21=0 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.29 rd rs1 30=1 27=1 26=1 21=0 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.30 rd rs1 30=1 27=1 26=1 21=1 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
-mop.r.31 rd rs1 30=1 27=1 26=1 21=1 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+mop.r.N mop_r_t_30 mop_r_t_27_26 mop_r_t_21_20 rd rs1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.0  rd rs1 30=0 27=0 26=0 21=0 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.1  rd rs1 30=0 27=0 26=0 21=0 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.2  rd rs1 30=0 27=0 26=0 21=1 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.3  rd rs1 30=0 27=0 26=0 21=1 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.4  rd rs1 30=0 27=0 26=1 21=0 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.5  rd rs1 30=0 27=0 26=1 21=0 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.6  rd rs1 30=0 27=0 26=1 21=1 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.7  rd rs1 30=0 27=0 26=1 21=1 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.8  rd rs1 30=0 27=1 26=0 21=0 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.9  rd rs1 30=0 27=1 26=0 21=0 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.10 rd rs1 30=0 27=1 26=0 21=1 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.11 rd rs1 30=0 27=1 26=0 21=1 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.12 rd rs1 30=0 27=1 26=1 21=0 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.13 rd rs1 30=0 27=1 26=1 21=0 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.14 rd rs1 30=0 27=1 26=1 21=1 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.15 rd rs1 30=0 27=1 26=1 21=1 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.16 rd rs1 30=1 27=0 26=0 21=0 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.17 rd rs1 30=1 27=0 26=0 21=0 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.18 rd rs1 30=1 27=0 26=0 21=1 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.19 rd rs1 30=1 27=0 26=0 21=1 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.20 rd rs1 30=1 27=0 26=1 21=0 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.21 rd rs1 30=1 27=0 26=1 21=0 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.22 rd rs1 30=1 27=0 26=1 21=1 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.23 rd rs1 30=1 27=0 26=1 21=1 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.24 rd rs1 30=1 27=1 26=0 21=0 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.25 rd rs1 30=1 27=1 26=0 21=0 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.26 rd rs1 30=1 27=1 26=0 21=1 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.27 rd rs1 30=1 27=1 26=0 21=1 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.28 rd rs1 30=1 27=1 26=1 21=0 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.29 rd rs1 30=1 27=1 26=1 21=0 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.30 rd rs1 30=1 27=1 26=1 21=1 20=0 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.r.N mop.r.31 rd rs1 30=1 27=1 26=1 21=1 20=1 31=1 29..28=0 25..22=7 14..12=4 6..2=0x1C 1..0=3
 
 # The Zimop extension additionally defines 8 MOP instructions named mop.rr.0
 # -- mop.rr.7. They are encoded as 1-00--1tttttsssss100ddddd1110011, where t
 # denotes the rs2 field.
+# add a pseudo-inst mop.rr.N taht matches mop.rr.*
 
-mop.rr.0 rd rs1 rs2 30=0 27=0 26=0 31=1 29..28=0 25=1 14..12=4 6..2=0x1C 1..0=3
-mop.rr.1 rd rs1 rs2 30=0 27=0 26=1 31=1 29..28=0 25=1 14..12=4 6..2=0x1C 1..0=3
-mop.rr.2 rd rs1 rs2 30=0 27=1 26=0 31=1 29..28=0 25=1 14..12=4 6..2=0x1C 1..0=3
-mop.rr.3 rd rs1 rs2 30=0 27=1 26=1 31=1 29..28=0 25=1 14..12=4 6..2=0x1C 1..0=3
-mop.rr.4 rd rs1 rs2 30=1 27=0 26=0 31=1 29..28=0 25=1 14..12=4 6..2=0x1C 1..0=3
-mop.rr.5 rd rs1 rs2 30=1 27=0 26=1 31=1 29..28=0 25=1 14..12=4 6..2=0x1C 1..0=3
-mop.rr.6 rd rs1 rs2 30=1 27=1 26=0 31=1 29..28=0 25=1 14..12=4 6..2=0x1C 1..0=3
-mop.rr.7 rd rs1 rs2 30=1 27=1 26=1 31=1 29..28=0 25=1 14..12=4 6..2=0x1C 1..0=3
+mop.rr.N mop_rr_t_30 mop_rr_t_27_26 rd rs1 rs2 31=1 29..28=0 25=1 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.rr.N mop.rr.0 rd rs1 rs2 30=0 27=0 26=0 31=1 29..28=0 25=1 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.rr.N mop.rr.1 rd rs1 rs2 30=0 27=0 26=1 31=1 29..28=0 25=1 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.rr.N mop.rr.2 rd rs1 rs2 30=0 27=1 26=0 31=1 29..28=0 25=1 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.rr.N mop.rr.3 rd rs1 rs2 30=0 27=1 26=1 31=1 29..28=0 25=1 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.rr.N mop.rr.4 rd rs1 rs2 30=1 27=0 26=0 31=1 29..28=0 25=1 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.rr.N mop.rr.5 rd rs1 rs2 30=1 27=0 26=1 31=1 29..28=0 25=1 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.rr.N mop.rr.6 rd rs1 rs2 30=1 27=1 26=0 31=1 29..28=0 25=1 14..12=4 6..2=0x1C 1..0=3
+$pseudo_op rv_zimop::mop.rr.N mop.rr.7 rd rs1 rs2 30=1 27=1 26=1 31=1 29..28=0 25=1 14..12=4 6..2=0x1C 1..0=3