Assembler Mnemonics

Name	Mnemonic	Notes
ADD	AR	RR C
ADD	A	RX C
ADD DECIMAL	AP	SS C
ADD HALFWORD	AH	RX C
ADD HALFWORD IMMEDIATE	AHI	RI C
ADD LOGICAL	ALR	RR C
ADD LOGICAL	AL	RX C
ADD NORMALIZED (extended)	AXR	RR C
ADD NORMALIZED (long)	ADR	RR C
ADD NORMALIZED (long)	AD	RX C
ADD NORMALIZED (short)	AER	RR C
ADD NORMALIZED (short)	AE	RX C
ADD UNNORMALIZED (long)	AWR	RR C
ADD UNNORMALIZED (long)	AW	RX C
ADD UNNORMALIZED (short)	AUR	RR C
ADD UNNORMALIZED (short)	AU	RX C
AND	NR	RR C
AND	N	RX C
AND (character)	NC	SS C
AND (immediate)	NI	SI C
BRANCH AND LINK	BALR	RR
BRANCH AND LINK	BAL	RX
BRANCH AND SAVE	BASR	RR
BRANCH AND SAVE	BAS	RX
BRANCH AND SAVE AND SET MODE	BASSM	RR
BRANCH AND SET MODE	BSM	RR
BRANCH AND STACK	BAKR	RRE
BRANCH IN SUBSPACE GROUP	BSG	RRE SG
BRANCH ON CONDITION	BCR	RR
BRANCH ON CONDITION	BC	RX
BRANCH ON COUNT	BCTR	RR
BRANCH ON COUNT	BCT	RX
BRANCH ON INDEX HIGH	BXH	RS
BRANCH ON INDEX LOW or EQUAL	BXLE	RS
BRANCH RELATIVE AND SAVE	BRAS	RI
BRANCH RELATIVE ON CONDITION	BRC	RI
BRANCH RELATIVE ON COUNT	BRCT	RI
BRANCH RELATIVE ON INDEX HIGH	BRXH	RSI
BRANCH RELATIVE ON INDEX LOW or EQUAL	BRXLE	RSI
CLEAR SUBCHANNEL	CSCH	S C
CHECKSUM	CKSM	RRE C
COMPARE	CR	RR C
COMPARE	C	RX C
COMPARE (long)	CDR	RR C
COMPARE (long)	CD	RX C
COMPARE (short)	CER	RR C
COMPARE (short)	CE	RX C
COMPARE AND FORM CODEWORD	CFC	S C
COMPARE AND SWAP	CS	RS C
COMPARE DECIMAL	CP	SS C
COMPARE DOUBLE AND SWAP	CDS	RS C
COMPARE HALFWORD	CH	RX C
COMPARE HALFWORD IMMEDIATE	CHI	RI C
COMPARE LOGICAL	CLR	RR C
COMPARE LOGICAL	CL	RX C
COMPARE LOGICAL (character)	CLC	SS C
COMPARE LOGICAL (immediate)	CLI	SI C
COMPARE LOGICAL C. UNDER MASK	CLM	RS C
COMPARE LOGICAL LONG	CLCL	RR C
COMPARE LOGICAL STRING	CLST	RRE C SR
COMPARE UNTIL SUBSTRING EQUAL	CUSE	RRE C
CONVERT TO BINARY	CVB	RX
CONVERT TO DECIMAL	CVD	RX
COPY ACCESS	CPYA	RRE
DIAGNOSE		DM
DIVIDE	DR	RR
DIVIDE	D	RX
DIVIDE (extended)	DXR	RRE
DIVIDE (long)	DDR	RR
DIVIDE (long)	DD	RX
DIVIDE (short)	DER	RR
DIVIDE (short)	DE	RX
DIVIDE DECIMAL	DP	SS
EDIT	ED	SS C
EDIT AND MARK	EDMK	SS C
EXCLUSIVE OR	XR	RR C
EXCLUSIVE OR	X	RX C
EXCLUSIVE OR (character)	XC	SS C
EXCLUSIVE OR (immediate)	XI	SI C
EXECUTE	EX	RX
EXTRACT ACCESS	EAR	RRE
EXTRACT PRIMARY ASN	EPAR	RRE
EXTRACT SECONDARY ASN	ESAR	RRE
EXTRACT STACKED REGISTERS	EREG	RRE
EXTRACT STACKED STATE	ESTA	RRE C
HALT SUBCHANNEL	HSCH	S C
HALVE (long)	HDR	RR
HALVE (short)	HER	RR
INSERT ADDRESS SPACE CONTROL	IAC	RRE C
INSERT CHARACTER	IC	RX
INSERT CHARACTERS UNDER MASK	ICM	RS C
INSERT PROGRAM MASK	IPM	RRE
INSERT PSW KEY	IPK	S
INSERT STORAGE KEY EXTENDED	ISKE	RRE
INSERT VIRTUAL STORAGE KEY	IVSK	RRE
INVALIDATE PAGE TABLE ENTRY	IPTE	RRE
LOAD	LR	RR
LOAD	L	RX
LOAD (long)	LDR	RR
LOAD (long)	LD	RX
LOAD (short)	LER	RR
LOAD (short)	LE	RX
LOAD ACCESS MULTIPLE	LAM	RS
LOAD ADDRESS	LA	RX
LOAD ADDRESS EXTENDED	LAE	RX
LOAD ADDRESS SPACE PARAMETERS	LASP	SSE C
LOAD AND TEST	LTR	RR C
LOAD AND TEST (long)	LTDR	RR C
LOAD AND TEST (short)	LTER	RR C
LOAD COMPLEMENT	LCR	RR C
LOAD COMPLEMENT (long)	LCDR	RR C
LOAD COMPLEMENT (short)	LCER	RR C
LOAD CONTROL	LCTL	RS
LOAD HALFWORD	LH	RX
LOAD HALFWORD IMMEDIATE	LHI	RI
LOAD MULTIPLE	LM	RS
LOAD NEGATIVE	LNR	RR C
LOAD NEGATIVE (long)	LNDR	RR C
LOAD NEGATIVE (short)	LNER	RR C
LOAD POSITIVE	LPR	RR C
LOAD POSITIVE (long)	LPDR	RR C
LOAD POSITIVE (short)	LPER	RR C
LOAD PSW	LPSW	S L
LOAD REAL ADDRESS	LRA	RX C
LOAD ROUNDED (ext. to long)	LRDR	RR
LOAD ROUNDED (long to short)	LRER	RR
LOAD USING REAL ADDRESS	LURA	RRE
MODIFY STACKED STATE	MSTA	RRE
MODIFY SUBCHANNEL	MSCH	S C
MONITOR CALL	MC	SI
MOVE (character)	MVC	SS
MOVE (immediate)	MVI	SI
MOVE INVERSE	MVCIN	SS MI
MOVE LONG	MVCL	RR C
MOVE NUMERICS	MVN	SS
MOVE PAGE	MVPG	RRE C
MOVE STRING	MVST	RRE C SR
MOVE TO PRIMARY	MVCP	SS C
MOVE TO SECONDARY	MVCS	SS C
MOVE WITH DESTINATION KEY	MVCDK	SSE
MOVE WITH KEY	MVCK	SS C
MOVE WITH OFFSET	MVO	SS
MOVE WITH SOURCE KEY	MVCSK	SSE
MOVE ZONES	MVZ	SS
MULTIPLY	MR	RR
MULTIPLY	M	RX
MULTIPLY (extended)	MXR	RR
MULTIPLY (long to extended)	MXDR	RR
MULTIPLY (long to extended)	MXD	RX
MULTIPLY (long)	MDR	RR
MULTIPLY (long)	MD	RX
MULTIPLY (short to long)	MER	RR
MULTIPLY (short to long)	ME	RX
MULTIPLY DECIMAL	MP	SS
MULTIPLY HALFWORD	MH	RX
MULTIPLY HALFWORD IMMEDIATE	MHI	RI
MULTIPLY SINGLE	MSR	RRE
MULTIPLY SINGLE	MS	RI
OR	OR	RR C
OR	O	RX C
OR (character)	OC	SS C
OR (immediate)	OI	SI C
PACK	PACK	SS
PERFORM LOCKED OPERATION	PLO	SS C
PROGRAM CALL	PC	S
PROGRAM RETURN	PR	E U
PROGRAM TRANSFER	PT	RRE
PURGE ALB	PALB	RRE
PURGE TLB	PTLB	S
RESET CHANNEL PATH	RCHP	S C
RESET REFERENCE BIT EXTENDED	RRBE	RRE C
RESUME SUBCHANNEL	RSCH	S C
SEARCH STRING	SRST	RRE C SR
SET ACCESS	SAR	RRE
SET ADDR. SPACE CONTROL FAST	SACF	S SA
SET ADDRESS LIMIT	SAL	S
SET ADDRESS SPACE CONTROL	SAC	S
SET CHANNEL MONITOR	SCHM	S
SET CLOCK	SCK	S C
SET CLOCK COMPARATOR	SCKC	S
SET CPU TIMER	SPT	S
SET PREFIX	SPX	S
SET PROGRAM MASK	SPM	RR L
SET PSW KEY FROM ADDRESS	SPKA	S
SET SECONDARY ASN	SSAR	RRE
SET STORAGE KEY EXTENDED	SSKE	RRE
SET SYSTEM MASK	SSM	S
SHIFT AND ROUND DECIMAL	SRP	SS C
SHIFT LEFT DOUBLE	SLDA	RS C
SHIFT LEFT DOUBLE LOGICAL	SLDL	RS
SHIFT LEFT SINGLE	SLA	RS C
SHIFT LEFT SINGLE LOGICAL	SLL	RS
SHIFT RIGHT DOUBLE	SRDA	RS C
SHIFT RIGHT DOUBLE LOGICAL	SRDL	RS
SHIFT RIGHT SINGLE	SRA	RS C
SHIFT RIGHT SINGLE LOGICAL	SRL	RS
SIGNAL PROCESSOR	SIGP	RS C
SQUARE ROOT (long)	SQDR	RRE QR
SQUARE ROOT (short)	SQER	RRE QR
START SUBCHANNEL	SSCH	S C
STORE	ST	RX
STORE (long)	STD	RX
STORE (short)	STE	RX
STORE ACCESS MULTIPLE	STAM	RS
STORE CHANNEL PATH STATUS	STCPS	S
STORE CHANNEL REPORT WORD	STCRW	S C
STORE CHARACTER	STC	RX
STORE CHARACTERS UNDER MASK	STCM	RS
STORE CLOCK	STCK	S C
STORE CLOCK COMPARATOR	STCKC	S
STORE CLOCK EXTENDED	STCKE	S C
STORE CONTROL	STCTL	RS
STORE CPU ADDRESS	STAP	S
STORE CPU ID	STIDP	S
STORE CPU TIMER	STPT	S
STORE HALFWORD	STH	RX
STORE MULTIPLE	STM	RS
STORE PREFIX	STPX	S
STORE SUBCHANNEL	STSCH	S C
STORE SYSTEM INFORMATION	STSI	S C
STORE THEN AND SYSTEM MASK	STNSM	SI
STORE THEN OR SYSTEM MASK	STOSM	SI
STORE USING REAL ADDRESS	STURA	RRE
SUBTRACT	SR	RR C
SUBTRACT	S	RX C
SUBTRACT DECIMAL	SP	SS C
SUBTRACT HALFWORD	SH	RX C
SUBTRACT LOGICAL	SLR	RR C
SUBTRACT LOGICAL	SL	RX C
SUBTRACT NORMALIZED (ext.)	SXR	RR C
SUBTRACT NORMALIZED (long)	SDR	RR C
SUBTRACT NORMALIZED (long)	SD	RX C
SUBTRACT NORMALIZED (short)	SER	RR C
SUBTRACT NORMALIZED (short)	SE	RX C
SUBTRACT UNNORMALIZED (long)	SWR	RR C
SUBTRACT UNNORMALIZED (long)	SW	RX C
SUBTRACT UNNORMALIZED (short)	SUR	RR C
SUBTRACT UNNORMALIZED (short)	SU	RX C
SUPERVISOR CALL	SVC	RR
TEST ACCESS	TAR	RRE C
TEST AND SET	TS	S C
TEST BLOCK	TB	RRE C
TEST PENDING INTERRUPTION	TPI	S C
TEST PROTECTION	TPROT	SSE C
TEST SUBCHANNEL	TSCH	S C
TEST UNDER MASK	TM	SI C
TEST UNDER MASK HIGH	TMH	RI C
TEST UNDER MASK LOW	TML	RI C
TRACE	TRACE	RS
TRANSLATE	TR	SS
TRANSLATE AND TEST	TRT	SS C
UNPACK	UNPK	SS
UPDATE TREE	UPT	E C
ZERO AND ADD	ZAP	SS C

C = Condition code is set.
DM = Depending on the model, DIAGNOSE may generate various program exceptions and may change the condition code.
E = E instruction format.
L = New condition code is loaded.
MI = Move-inverse facility.
QR = Square-root facility.
RR = RR instruction format.
RRE = RRE instruction format.
RS = RS instruction format.
RX = RX instruction format.
S = S instruction format.
SA = Set-address-space-control-fast facility.
SG = Subspace-group facility.
SI = SI instruction format.
SR = String-instruction facility.
SS = SS instruction format.
SSE = SSE instruction format.
U = Condition code is unpredictable.