The instructions to be described on this page have the formats, taken from the main illustration of instruction formats on the first page of this section, shown in this diagram:
As well, the 33-bit alternate instructions include memory-to-register operate instructions, which are also listed below.
The opcodes for these instructions are:
Three-Address Two-Address 33-bit
Memory-Reference
156000 xxxxxx 157000 000xxx 00xxx0 xxxxxx SWB Swap Byte
156002 xxxxxx 157000 004xxx 00xxx1 xxxxxx CB Compare Byte
156010 xxxxxx 157000 010xxx 00xxx2 xxxxxx LB Load Byte
00xxx3 xxxxxx STB Store Byte
156020 xxxxxx 157000 020xxx 01xxx0 xxxxxx AB Add Byte
156022 xxxxxx 157000 024xxx 01xxx1 xxxxxx SB Subtract Byte
156040 xxxxxx 157000 040xxx 02xxx0 xxxxxx IB Insert Byte
156050 xxxxxx 157000 050xxx 02xxx2 xxxxxx ULB Unsigned Load Byte
156052 xxxxxx 157000 054xxx 02xxx3 xxxxxx XB Exclusive OR Byte
156060 xxxxxx 157000 060xxx 03xxx0 xxxxxx NB AND Byte
156062 xxxxxx 157000 064xxx 03xxx1 xxxxxx OB OR Byte
156100 xxxxxx 157000 100xxx 04xxx0 xxxxxx SWH Swap Halfword
156102 xxxxxx 157000 104xxx 04xxx1 xxxxxx CH Compare Halfword
156110 xxxxxx 157000 110xxx 04xxx2 xxxxxx LH Load Halfword
04xxx3 xxxxxx STH Store Halfword
156120 xxxxxx 157000 120xxx 05xxx0 xxxxxx AH Add Halfword
156122 xxxxxx 157000 124xxx 05xxx1 xxxxxx SH Subtract Halfword
156130 xxxxxx 157000 130xxx 05xxx2 xxxxxx MH Multiply Halfword
156132 xxxxxx 157000 134xxx 05xxx3 xxxxxx DH Divide Halfword
156140 xxxxxx 157000 140xxx 06xxx0 xxxxxx IH Insert Halfword
156150 xxxxxx 157000 150xxx 06xxx2 xxxxxx ULH Unsigned Load Halfword
156152 xxxxxx 157000 154xxx 06xxx3 xxxxxx XH Exclusive OR Halfword
156160 xxxxxx 157000 160xxx 07xxx0 xxxxxx NH AND Halfword
156162 xxxxxx 157000 164xxx 07xxx1 xxxxxx OH OR Halfword
156170 xxxxxx 157000 170xxx 07xxx2 xxxxxx MEH Multiply Extensibly Halfword
156172 xxxxxx 157000 174xxx 07xxx3 xxxxxx DEH Divide Extensibly Halfword
156200 xxxxxx 157001 000xxx 10xxx0 xxxxxx SW Swap
156202 xxxxxx 157001 004xxx 10xxx1 xxxxxx C Compare
156210 xxxxxx 157001 010xxx 10xxx2 xxxxxx L Load
10xxx3 xxxxxx ST Store
156220 xxxxxx 157001 020xxx 11xxx0 xxxxxx A Add
156222 xxxxxx 157001 024xxx 11xxx1 xxxxxx S Subtract
156230 xxxxxx 157001 030xxx 11xxx2 xxxxxx M Multiply
156232 xxxxxx 157001 034xxx 11xxx3 xxxxxx D Divide
156240 xxxxxx 157001 040xxx 12xxx0 xxxxxx I Insert
156250 xxxxxx 157001 050xxx 12xxx2 xxxxxx UL Unsigned Load
156252 xxxxxx 157001 054xxx 12xxx3 xxxxxx X Exclusive OR
156260 xxxxxx 157001 060xxx 13xxx0 xxxxxx N AND
156262 xxxxxx 157001 064xxx 13xxx1 xxxxxx O OR
156270 xxxxxx 157001 070xxx 13xxx2 xxxxxx ME Multiply Extensibly
156272 xxxxxx 157001 074xxx 13xxx3 xxxxxx DE Divide Extensibly
156300 xxxxxx 157001 100xxx 14xxx0 xxxxxx SWL Swap Long
156302 xxxxxx 157001 104xxx 14xxx1 xxxxxx CL Compare Long
156310 xxxxxx 157001 110xxx 14xxx2 xxxxxx LL Load Long
14xxx3 xxxxxx STL Store Long
156320 xxxxxx 157001 120xxx 15xxx0 xxxxxx AL Add Long
156322 xxxxxx 157001 124xxx 15xxx1 xxxxxx SL Subtract Long
156330 xxxxxx 157001 130xxx 15xxx2 xxxxxx ML Multiply Long
156332 xxxxxx 157001 134xxx 15xxx3 xxxxxx DL Divide Long
156352 xxxxxx 157001 154xxx 16xxx3 xxxxxx XL Exclusive OR Long
156360 xxxxxx 157001 160xxx 17xxx0 xxxxxx NL AND Long
156362 xxxxxx 157001 164xxx 17xxx1 xxxxxx OL OR Long
156370 xxxxxx 157001 170xxx 17xxx2 xxxxxx MEL Multiply Extensibly Long
156372 xxxxxx 157001 174xxx 17xxx3 xxxxxx DEL Divide Extensibly Long
156400 xxxxxx 157002 000xxx 20xxx0 xxxxxx SWM Swap Medium
156402 xxxxxx 157002 004xxx 20xxx1 xxxxxx CM Compare Medium
156410 xxxxxx 157002 010xxx 20xxx2 xxxxxx LM Load Medium
20xxx3 xxxxxx STM Store Medium
156420 xxxxxx 157002 020xxx 21xxx0 xxxxxx AM Add Medium
156422 xxxxxx 157002 024xxx 21xxx1 xxxxxx SM Subtract Medium
156430 xxxxxx 157002 030xxx 21xxx2 xxxxxx MM Multiply Medium
156432 xxxxxx 157002 034xxx 21xxx3 xxxxxx DM Divide Medium
156440 xxxxxx 157002 040xxx 22xxx0 xxxxxx SWF Swap Floating
156442 xxxxxx 157002 044xxx 22xxx1 xxxxxx CF Compare Floating
156450 xxxxxx 157002 050xxx 22xxx2 xxxxxx LF Load Floating
22xxx3 xxxxxx STF Store Floating
156460 xxxxxx 157002 060xxx 23xxx0 xxxxxx AF Add Floating
156462 xxxxxx 157002 064xxx 23xxx1 xxxxxx SF Subtract Floating
156470 xxxxxx 157002 070xxx 23xxx2 xxxxxx MF Multiply Floating
156472 xxxxxx 157002 074xxx 23xxx3 xxxxxx DF Divide Floating
156500 xxxxxx 157002 100xxx 24xxx0 xxxxxx SWD Swap Double
156502 xxxxxx 157002 104xxx 24xxx1 xxxxxx CD Compare Double
156510 xxxxxx 157002 110xxx 24xxx2 xxxxxx LD Load Double
24xxx3 xxxxxx STD Store Double
156520 xxxxxx 157002 120xxx 25xxx0 xxxxxx AD Add Double
156522 xxxxxx 157002 124xxx 25xxx1 xxxxxx SD Subtract Double
156530 xxxxxx 157002 130xxx 25xxx2 xxxxxx MD Multiply Double
156532 xxxxxx 157002 134xxx 25xxx3 xxxxxx DD Double
156540 xxxxxx 157002 140xxx 26xxx0 xxxxxx SWQ Swap Quad
156542 xxxxxx 157002 144xxx 26xxx1 xxxxxx CQ Compare Quad
156550 xxxxxx 157002 150xxx 26xxx2 xxxxxx LQ Load Quad
26xxx3 xxxxxx STQ Store Quad
156560 xxxxxx 157002 160xxx 27xxx0 xxxxxx AQ Add Quad
156562 xxxxxx 157002 164xxx 27xxx1 xxxxxx SQ Subtract Quad
156570 xxxxxx 157002 170xxx 27xxx2 xxxxxx MQ Multiply Quad
156572 xxxxxx 157002 174xxx 27xxx3 xxxxxx DQ Divide Quad
Most of these operations were defined on the page concerning 17-bit and 15-bit instructions.
Subsequent pages will give opcodes for additional instructions with these formats, for performing operations on data types other than two's complement binary integers and IEEE 754 (or similar, in the case of the Medium length) floating point.