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Trailing-Edge - PDP-10 Archives - klu2_442 - define.mic
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.TOC	"CONDITIONAL ASSEMBLY VARIABLE DEFINITIONS"
.NOBIN

; [COST ESTIMATES IN BRACKETS INDICATE NUMBER OF ADDITIONAL
; MICROINSTRUCTIONS REQUIRED BY TURNING ON THE FEATURE SWITCH]

.DEFAULT/TRACKS=0	;1 ENABLES STORING PC AFTER EVERY INSTRUCTION,
			; & CREATES DATAI/O PI TO READ/SETUP PC BUFFER
			;ADDRESS. [COST = 21 WDS]

.DEFAULT/OP.CNT=0	;1 ENABLES CODE TO BUILD A HISTOGRAM IN CORE
			; COUNTING USES OF EACH OPCODE IN USER & EXEC

.DEFAULT/OP.TIME=0	;1 ENABLES CODE TO ACCUMULATE TIME SPENT BY
			; EACH OPCODE

.DEFAULT/SO.CNT=0	;SECOND ORDER COUNTING IN 128K STARTING AT LOC
			; 400000 NOT DEBUGED [COST = 28 WDS]

.DEFAULT/SO2.CNT=0	;SECOND ORDER COUNTING IN 128K STARTING AT LOC
			; PRESENTED AT START DOES ONE MORE ADD THAN
			; SO.CNT AND HENCE AN INSTRUCTION TAKES
			; 120 NS LONGER THAN SO.CNT [COST = 28 WDS]

.DEFAULT/PAGCNT=0	;Enable code to count entries into the PFH and
			; number of DATAO PAGs with bit 2 set.  [Cost =
			; 6 words] [327]

.DEFAULT/FPLONG=1	;1 ENABLES KA-STYLE DOUBLE PRECISION FLOATING
			;POINT INSTRUCTIONS: FADL, FSBL, FMPL, FDVL,
			; UFA, DFN. [COST = 49 WDS]

.DEFAULT/MULTI=0	;1 IF MULTIPROCESSOR SYSTEM, TO SUPPRESS CACHE
			;ON UNPAGED REF'S.  PAGED REF'S ARE UP TO EXEC.

.DEFAULT/MOS.MULTI=0	;1 if we have multiported MOS memory.  This hardware
			;project was abandoned before it was completed.
			;[Cost = 5 wds.]

.DEFAULT/SNORM.OPT=0	;1 ENABLES FASTER NORMALIZATION OF SINGLE-
			; PRECISION RESULTS WHICH HAVE SEVERE LOSS OF
			; SIGNIFICANCE [COST = 4 WDS]

.IF/TRACKS		;SETUP CONTROL FOR COMMON CODE
	.SET/INSTR.STAT=1
.ENDIF/TRACKS

.IF/OP.CNT
	.SET/INSTR.STAT=1	;ENABLE COMMON CODE, ERROR IF TRACKS TOO
.ENDIF/OP.CNT

.IF/OP.TIME
	.SET/INSTR.STAT=1	;ERROR IF TRACKS OR OP.CNT ALSO SET
.ENDIF/OP.TIME

.IF/SO.CNT
	.SET/INSTR.STAT=1
.ENDIF/SO.CNT

.IF/SO2.CNT
	.SET/INSTR.STAT=1
.ENDIF/SO2.CNT

.DEFAULT/INSTR.STAT=0		;IF NO STATISTICS, TURN OFF COMMON CODE

.IF/INSTR.STAT
	.SET/NONSTD=1		;STATISTICS CODE IS NONSTANDARD
	.SET/TRXDEF=1		;Make sure TRX registers get defined [327]
.ENDIF/INSTR.STAT

.IF/PAGCNT
	.SET/NONSTD=1		;All statistics are nonstandard
	.SET/TRXDEF=1		;We need the TRX registers
.ENDIF/PAGCNT

.DEFAULT/TRXDEF=0		;Normally no TRX registers needed

.DEFAULT/NONSTD=0		;NONSTANDARD MICROCODE IS NORMALLY OFF
.DEFAULT/OWGBP=0		;[264]
.DEFAULT/IPA20=0		;[264]
.DEFAULT/NOCST=0		;[264]
.DEFAULT/CST.WRITE=1		;[314] Enable CST writable bit
.DEFAULT/BIG.PT=1		;[333][347] Special code for big page table and Keep bit
.DEFAULT/DDT.BUG=0		;[346] If on, enable APRID hack to move bit 23
.DEFAULT/GFTCNV=1		;[273] GFLOAT CONVERSION INST.
.DEFAULT/EDIT=1			;Edit is usually here  ****HACK****
.TOC	"HOW TO READ THE MICROCODE -- FORMATS & CONSTRUCTS"

;(1)	FIELD DEFINITIONS
;	THESE OCCUR AT THE BEGINNING OF THE LISTING, IN THE SOURCE FILE
; DEFINE.MIC (CONTROL AND DISPATCH RAM DEFINITIONS).
; THEY HAVE THE FORM:
;	SYMBOL/=<L:R>M,J
;ANOTHER FORM ACCEPTED BY THE ASSEMBLER (FOR HISTORIC REASONS) IS:
;	SYMBOL/=J,K,R,M		;THIS FORM HAS BEEN REMOVED FROM THIS CODE
;	THE PARAMETER (J) IS MEANINGFUL ONLY WHEN "D" IS SPECIFIED
; AS THE DEFAULT MECHANISM, AND IN THAT CASE, GIVES THE DEFAULT VALUE OF
; THE FIELD IN OCTAL.
;	THE PARAMETER (K) GIVES THE FIELD SIZE IN (DECIMAL) NUMBER
; OF BITS. THIS IS USED ONLY IN THE OUTDATED FORMAT.
;	THE PARAMETER (L) GIVES THE BIT POSITION OF THE LEFTMOST BIT
;IN THE FIELD. THE SAME METHOD IS USED AS FOR (R) BELOW.
;	THE PARAMETER (R) GIVES THE FIELD POSITION IN DECIMAL
; AS THE BIT NUMBER OF THE RIGHTMOST BIT OF THE FIELD.  BITS ARE NUMBERED
; FROM 0 ON THE LEFT.  NOTE THAT THE POSITION OF BITS IN THE MICROWORD
; SHOWN IN THE LISTING BEARS NO RELATION TO THE ORDERING OF BITS IN THE
; HARDWARE MICROWORD, WHERE FIELDS ARE OFTEN BROKEN UP AND SCATTERED.
;	THE PARAMETER (M) IS OPTIONAL, AND SELECTS A DEFAULT
; MECHANISM FOR THE FIELD.  THE LEGAL VALUES OF THIS PARAMETER ARE THE
; CHARACTERS "D", "T", "P", OR "+".
;	  "D" MEANS (J) IS THE DEFAULT VALUE OF THE FIELD IF NO EXPLICIT
;	VALUE IS SPECIFIED.
;	  "T" IS USED ON THE TIME FIELD TO SPECIFY THAT THE VALUE OF THE
;	FIELD DEPENDS ON THE TIME PARAMETERS SELECTED FOR OTHER FIELDS.
;	THE VALUE OF A FIELD WITH THIS SPECIFICATION DEFAULTS TO THE
;	MAX OF <SUM OF THE T1 PARAMETERS DEFINED FOR FIELD/VALUES
;	SPECIFIED IN THIS MICROINSTRUCTION>, <SUM OF THE T2 PARAMETERS
;	FOR THIS MICROINSTRUCTION>, <J PARAMETER OF THIS FIELD>.
;	WITHIN THE KL10 MICROCODE, T1 PARAMETERS ARE USED TO SPECIFY
;	FUNCTIONS WHICH DEPEND ON THE ADDER SETUP TIME, AND T2 PARAMETERS
;	ARE USED FOR FUNCTIONS WHICH REQUIRE ADDITIONAL TIME FOR CORRECT
;	SELECTION OF THE NEXT MICROINSTRUCTION ADDRESS.
;	  "P" IS USED ON THE PARITY FIELD TO SPECIFY THAT THE VALUE OF THE
;	FIELD SHOULD DEFAULT SUCH THAT PARITY OF THE ENTIRE WORD
;	IS ODD.  IF THIS OPTION IS SELECTED ON A FIELD WHOSE SIZE (K) IS
;	ZERO, THE MICRO ASSEMBLER WILL ATTEMPT TO FIND A BIT SOMEWHERE
;	IN THE WORD FOR WHICH NO VALUE IS SPECIFIED OR DEFAULTED.
;	  "+" IS USED ON THE JUMP ADDRESS FIELD TO SPECIFY THAT THE DEFAULT
;	JUMP ADDRESS IS THE ADDRESS OF THE NEXT INSTRUCTION ASSEMBLED (NOT,
;	IN GENERAL, THE CURRENT LOCATION +1).
;	IN GENERAL, A FIELD CORRESPONDS TO THE SET OF BITS WHICH PROVIDE
; SELECT INPUTS FOR MIXERS OR DECODERS, OR CONTROLS FOR ALU'S.
; EXAMPLES:
;	AR/=<24:26>D,0	OR	AR/=0,3,26,D
;	THE MICROCODE FIELD WHICH CONTROLS THE AR MIXER (AND THEREFORE
; THE DATA TO BE LOADED INTO AR ON EACH EBOX CLOCK) IS THREE BITS WIDE
; AND THE RIGHTMOST BIT IS SHOWN IN THE LISTING AS BIT 26 OF THE
; MICROINSTRUCTION.  IF NO VALUE IS SPECIFICALLY REQUESTED FOR THE FIELD,
; THE MICROASSEMBLER WILL ENSURE THAT THE FIELD IS 0.
;	AD/=<12:17>	OR	AD/=0,6,17
;	THE FIELD WHICH CONTROLS THE AD IS 6 BITS WIDE, ENDING ON
; BIT 17.  THE FOURTH PARAMETER OF THE FIELD IS OMITTED, SO THE FIELD
; IS AVAILABLE TO THE MICROASSEMBLER (IF NO VALUE IS EXPLICITLY
; CALLED OUT FOR THE FIELD) FOR MODIFICATION TO ENSURE ODD PARITY IN THE
; ENTIRE WORD.
;
;(2)	VALUE DEFINITIONS
;	FOLLOWING A FIELD DEFINITION, SYMBOLS MAY BE CREATED IN THAT
; FIELD TO CORRESPOND TO VALUES OF THE FIELD.  THE FORM IS:
;	SYMBOL=N,T1,T2
;	"N" IS, IN OCTAL, THE VALUE OF SYMBOL WHEN USED IN THE FIELD.
; T1 AND T2 ARE OPTIONAL, AND SPECIFY PARAMETERS IN THE TIME FIELD
; CALCULATION FOR MICROINSTRUCTIONS IN WHICH THIS FIELD/SYMBOL IS USED.
; THE MICROASSEMBLER COMPUTES THE SUMS OF ALL THE T1'S AND ALL THE T2'S
; SPECIFIED FOR FIELD/SYMBOL SPECIFICATIONS IN A WORD, AND USES THE MAX
; OF THE TWO SUMS AS THE DEFAULT VALUE FOR THE FIELD WHOSE DEFAULT
; MECHANISM IS "T".  EXAMPLES:
;	AD/=<12:17>	;FIELD DEFINITION IN WHICH FOLLOWING SYMBOLS EXIST
;	XOR=31
;	A+B=6,1
;	HERE THE SYMBOLS "XOR" AND "A+B" ARE DEFINED FOR THE "AD" FIELD.
; TO THE ASSEMBLER, THEREFORE, WRITING "AD/XOR" MEANS PUT THE VALUE 31
; INTO THE 6-BIT FIELD ENDING ON BIT 17 OF THE MICROWORD.  THE SYMBOLS
; ARE CHOSEN FOR MNEMONIC SIGNIFICANCE, OF COURSE, SO ONE READING
; THE MICROCODE WOULD INTERPRET "AD/XOR" AS "THE OUTPUT OF AD SHALL BE THE
; EXCLUSIVE OR OF ITS A AND B INPUTS".  SIMILIARLY, "AD/A+B" IS READ AS
; "AD PRODUCES THE SUM OF A AND B".  THE SECOND PARAMETER IN THE DEFINITION
; OF "A+B" IS A CONTROL TO THE MICRO ASSEMBLER'S TIME-FIELD CALCULATION,
; WHICH TELLS THE ASSEMBLER THAT THIS OPERATION TAKES LONGER THAN THE
; BASIC CYCLE, AND THEREFORE THAT THE TIME FIELD SHOULD BE INCREASED.
;	AR/=<24:26>D,0	;FIELD DEFINITION FOR FOLLOWING SYMBOLS
;	AR=0
;	AD=2
;	HERE THE SYMBOLS "AR" AND "AD" ARE DEFINED FOR THE FIELD NAMED
; "AR", WHICH CONTROLS THE AR MIXER.  WE COULD WRITE AR/AR TO MEAN THAT
; THE AR MIXER SELECT INPUTS WOULD BE 0, WHICH IN THE
; HARDWARE SELECTS THE AR OUTPUT FOR RECIRCULATION TO THE REGISTER.  IN
; PRACTICE, HOWEVER, WE WANT THIS TO BE THE DEFAULT CASE, SO THAT AR
; DOES NOT CHANGE UNLESS WE SPECIFICALLY REQUEST IT, SO THE FIELD
; DEFINITION SPECIFIES 0 AS THE DEFAULT VALUE OF THE FIELD.  IF WE
; WANT AR LOADED FROM THE AD OUTPUT, WE WRITE "AR/AD" TO SET THE
; MIXER SELECTS TO PASS THE AD OUTPUT INTO THE AR.
;
;(3)	LABEL DEFINITIONS
;	A MICRO INSTRUCTION MAY BE LABELLED BY A SYMBOL FOLLOWED BY COLON
; PRECEDING THE MICROINSTRUCTION DEFINITION.  THE ADDRESS OF THE
; MICROINSTRUCTION BECOMES THE VALUE OF THE SYMBOL IN THE FIELD NAMED "J".
; EXAMPLE:
;	FOO:	J/FOO
;	THIS IS A MICROINSTRUCTION WHOSE "J" FIELD (JUMP ADDRESS) CONTAINS
; THE VALUE "FOO".  IT ALSO DEFINES THE SYMBOL "FOO" TO BE THE ADDRESS
; OF ITSELF.  THEREFORE, IF EXECUTED BY THE MICROPROCESSOR, IT WOULD
; LOOP ON ITSELF.
;
;(4)	COMMENTS
;	A SEMICOLON ANYWHERE ON A LINE CAUSES THE REST OF THE LINE
; TO BE IGNORED BY THE ASSEMBLER.  THIS TEXT IS AN EXAMPLE OF COMMENTS.
;
;(5)	MICROINSTRUCTION DEFINITION
;	A WORD OF MICROCODE IS DEFINED BY SPECIFYING A FIELD NAME,
; FOLLOWED BY SLASH (/), FOLLOWED BY A VALUE.  THE VALUE MAY BE A
; SYMBOL DEFINED FOR THAT FIELD, AN OCTAL DIGIT STRING, OR A DECIMAL
; DIGIT STRING (DISTINGUISHED BY THE FACT THAT IT CONTAINS "8" AND/OR
; "9" AND/OR IS TERMINATED BY A PERIOD). SEVERAL FIELDS MAY BE SPECIFIED
; IN ONE MICROINSTRUCTION BY SEPARATING FIELD/VALUE SPECIFICATIONS WITH
; COMMAS.  EXAMPLE:
;	ADB/BR,ADA/AR,AD/A+B,AR/AD
;	THE FIELD NAMED "ADB" IS GIVEN THE VALUE NAMED "BR" (TO
; CAUSE THE MIXER ON THE B SIDE OF AD TO SELECT BR), FIELD "ADA" HAS VALUE
; "AR", FIELD "AD" HAS VALUE "A+B", AND FIELD "AR" HAS VALUE "AD".
;
;(6)	CONTINUATION
;	THE DEFINITION OF A MICROINSTRUCTION MAY CONTINUED ONTO TWO OR
; MORE LINES BY BREAKING IT AFTER ANY COMMA.  IN OTHER WORDS, IF THE
; LAST NON-BLANK, NON-COMMENT CHARACTER ON A LINE IS A COMMA, THE
; INSTRUCTION SPECIFICATION IS CONTINUED ON THE FOLLOWING LINE.
; EXAMPLE:
;	ADB/BR,ADA/AR,		;SELECT AR & BR AS AD INPUTS
;		AD/A+B,AR/AD	;TAKE THE SUM INTO AR
; BY CONVENTION, CONTINUATION LINES ARE INDENTED AN EXTRA TAB.
;
;(7)	MACROS
;	A MACRO IS A SYMBOL WHOSE VALUE IS ONE OR MORE FIELD/VALUE
; SPECIFICATIONS AND/OR MACROS.  A MACRO DEFINITION IS A LINE CONTAINING
; THE MACRO NAME FOLLOWED BY A QUOTED STRING WHICH IS THE VALUE OF THE
; MACRO.  EXAMPLE:
;	AR_AR+BR	"ADB/BR,ADA/AR,AD/A+B,AR/AD"
; THE APPEARANCE OF A MACRO IN A MICROINSTRUCTION DEFINITION IS EQUIVALENT
; TO THE APPEARANCE OF ITS VALUE.  MACROS FOR VARIOUS FUNCTIONS
; ARE DEFINED IN "MACRO.MIC".
;
;(8)	PSEUDO OPS
;	THE MICRO ASSEMBLER HAS 10 PSEUDO-OPERATORS:
;.DCODE AND .UCODE SELECT THE RAM INTO WHICH SUBSEQUENT MICROCODE WILL
;BE LOADED, AND THEREFORE THE FIELD DEFINITIONS AND MACROS WHICH ARE
;MEANINGFUL IN SUBSEQUENT MICROCODE
;.TITLE DEFINES A STRING OF TEXT TO APPEAR IN THE PAGE HEADER, AND
;.TOC DEFINES AN ENTRY FOR THE TABLE OF CONTENTS AT THE BEGINNING.
;.SET DEFINES THE VALUE OF A CONDITIONAL ASSEMBLY PARAMETER,
;.CHANGE REDEFINES A CONDITIONAL ASSEMBLY PARAMETER,
;.DEFAULT ASSIGNS A VALUE TO AN UNDEFINED PARAMETER.
;.IF ENABLES ASSEMBLY IF THE VALUE OF THE PARAMETER IS NOT ZERO,
;.IFNOT ENABLES ASSEMBLY IF THE PARAMETER VALUE IS ZERO, AND
;.ENDIF RE-ENABLES ASSEMBLY IF SUPPRESSED BY THE PARAMETER NAMED.
;
;(9)	LOCATION CONTROL
;	A MICROINSTRUCTION "LABELLED" WITH A NUMBER IS ASSIGNED TO THAT
; ADDRESS.
;	THE CHARACTER "=" AT THE BEGINNING OF A LINE, FOLLOWED BY
; A STRING OF 0'S, 1'S, AND/OR *'S, SPECIFIES A CONSTRAINT ON THE
; ADDRESS OF FOLLOWING MICROINSTRUCTIONS.  THE NUMBER OF CHARACTERS
; IN THE CONSTRAINT STRING (EXCLUDING THE "=") IS THE NUMBER OF LOW-ORDER
; BITS CONSTRAINED IN THE ADDRESS.  THE MICROASSEMBLER ATTEMPTS TO FIND
; AN UNUSED LOCATION WHOSE ADDRESS HAS 0 BITS IN THE POSITIONS
; CORRESPONDING TO 0'S IN THE CONSTRAINT STRING AND 1 BITS WHERE THE
; CONSTRAINT HAS 1'S.  ASTERISKS DENOTE "DON'T CARE" BIT POSITIONS.
;	IF THERE ARE ANY 0'S IN THE CONSTRAINT STRING, THE CONSTRAINT
; IMPLIES A BLOCK OF <2**N> MICROWORDS, WHERE N IS THE NUMBER OF 0'S
; IN THE STRING.  ALL LOCATIONS IN THE BLOCK WILL HAVE 1'S IN THE ADDRESS
; BITS CORRESPONDING TO 1'S IN THE STRING, AND BIT POSITIONS DENOTED BY *'S
; WILL BE THE SAME IN ALL LOCATIONS OF THE BLOCK.
;	IN SUCH A CONSTRAINT BLOCK, THE DEFAULT ADDRESS PROGRESSION IS
; COUNTING IN THE "0" POSITIONS OF THE CONSTRAINT STRING, BUT A NEW
; CONSTRAINT STRING OCCURING WITHIN A BLOCK MAY FORCE SKIPPING OVER
; SOME LOCATIONS OF THE BLOCK.  WITHIN A BLOCK, A NEW CONSTRAINT
; STRING DOES NOT CHANGE THE PATTERN OF DEFAULT ADDRESS PROGRESSION, IT
; MERELY ADVANCES THE LOCATION COUNTER OVER THOSE LOCATIONS.  THE
; MICROASSEMBLER WILL LATER FILL THEM IN.
;	A NULL CONSTRAINT STRING ("=" FOLLOWED BY ANYTHING BUT "0",
; "1", OR "*") SERVES TO TERMINATE A CONSTRAINT BLOCK.
; EXAMPLES:
;	=0
;	THIS SPECIFIES THAT THE LOW-ORDER ADDRESS BIT MUST BE ZERO--
; THE MICROASSEMBLER FINDS AN EVEN-ODD PAIR OF LOCATIONS, AND PUTS
; THE NEXT TWO MICROINSTRUCTIONS INTO THEM.
;	=11
;	THIS SPECIFIES THAT THE TWO LOW-ORDER BITS OF THE ADDRESS MUST
; BOTH BE ONES.  SINCE THERE ARE NO 0'S IN THIS CONSTRAINT, THE
; ASSEMBLER FINDS ONLY ONE LOCATION MEETING THE CONSTRAINT.
;	=0*****
;	THIS SPECIFIES AN ADDRESS IN WHICH THE "40" BIT IS ZERO.  DUE
; TO THE IMPLEMENTATION OF THIS FEATURE IN THE ASSEMBLER,  THE DEFAULT
; ADDRESS PROGRESSION APPLIES ONLY TO THE LOW-ORDER 5 BITS, SO THIS
; CONSTRAINT FINDS ONE WORD IN WHICH THE "40" BIT IS ZERO, AND DOES
; NOT ATTEMPT TO FIND ONE IN WHICH THAT BIT IS A ONE.
;THIS LIMITATION HAS BEEN CHANGED WITH NEWER ASSEMBLER VERSIONS.
;HOWEVER NONE OF THE LOCATIONS IN THE MICROCODE REQUIRE ANYTHING BUT THE
;CONSTRAINT MENTIONED ABOVE.
.TOC	"MICROCODE LISTING TEMPLATE"
;HERE IS A TEMPLATE WHICH CAN BE USED WITH THE MICROCODE
; LISTING TO IDENTIFY FIELDS IN THE OUTPUT --


; ----  ---- ---- ---- ---- ---- ---- ----
; [--]  [--] []!! !!!! !!!! !![] [][] ![-]
;   !     !   !!! !!!! !!!! !! !  ! ! ! + # = MAGIC NUMBERS
;   !     !   !!! !!!! !!!! !! !  ! ! + MARK = SCOPE SYNC
;   !     !   !!! !!!! !!!! !! !  ! !
;   !     !   !!! !!!! !!!! !! !  ! + CALL, DISP/SPEC = SPEC FUNCTIONS
;   !     !   !!! !!!! !!!! !! !  + SKIP/COND = SPECIAL FUNCTIONS
;   !     !   !!! !!!! !!!! !! !
;   !     !   !!! !!!! !!!! !! + TIME, MEM = UINST TIME & MEM FUNCTION
;   !     !   !!! !!!! !!!! !+ VMA = VMA INPUT SELECT
;   !     !   !!! !!!! !!!! + SH/ARMM = SH FUNCTION / ARMM SELECT
;   !     !   !!! !!!! !!!!
;   !     !   !!! !!!! !!!+ SC, FE = SC INPUT SELECT & FE LOAD
;   !     !   !!! !!!! !!+ SCADB = SELECT FOR SCAD "B" INPUT
;   !     !   !!! !!!! !+ SCADA = ENABLE AND SELECT FOR SCAD "A" INPUT
;   !     !   !!! !!!! + SCAD = SC/FE ADDER FUNCTION
;   !     !   !!! !!!!
;   !     !   !!! !!!+ FM ADR = FAST MEMORY ADDRESS SELECT
;   !     !   !!! !!+ BR, BRX, MQ = LOAD BR & BRX, SEL FOR MQ
;   !     !   !!! !+ ARX = SELECT FOR ARX INPUT
;   !     !   !!! + AR = SELECT FOR AR INPUT
;   !     !   !!!
;   !     !   !!+ ADB = SELECT FOR ADDER "B" INPUT
;   !     !   !+ ADA = SELECT AND ENABLE FOR ADDER "A" INPUT
;   !     !   + AD = OPERATION IN ADDER AND ADDER EXTENSION
;   !     !
;   !     + J = BASE ADDRESS TO WHICH THIS MICROINSTRUCTION JUMPS
;   !
;   + LOCATION IN CRAM INTO WHICH THIS WORD IS LOADED
;
; U/V = MICRO INSTRUCTION FOR CRAM

;*******************************************************************

; D = WORD FOR DRAM
;
;   + LOCATION IN DRAM INTO WHICH THIS WORD IS LOADED
;   !
;   !   + A = OPERAND ACCESS CONTROL
;   !   !+ B = INSTRUCTION "MODE"
;   !   !! + P = PARITY FOR THIS WORD
;   !   !! !
;   !   !! !   + J = ADDRESS OF HANDLER FOR THIS INSTRUCTION
; [--]  !! ! [--]
; ----  ---- ----
.TOC	"KL10 INSTRUCTION OPCODE MAP"

;	0	1	2	3	4	5	6	7
;100	(UUO)	(UUO)	GFAD	GFSB	JSYS	ADJSP	GFMP	GFDV
;110	DFAD	DFSB	DFMP	DFDV	DADD	DSUB	DMUL	DDIV
;120	DMOVE	DMOVN	FIX	EXTEND	DMOVEM	DMOVNM	FIXR	FLTR
;130	(UFA)	(DFN)	FSC	IBP	ILDB	LDB	IDPB	DPB
;140	FAD	(FADL)	FADM	FADB	FADR	FADRI	FADRM	FADRB
;150	FSB	(FSBL)	FSBM	FSBB	FSBR	FSBRI	FSBRM	FSBRB
;160	FMP	(FMPL)	FMPM	FMPB	FMPR	FMPRI	FMPRM	FMPRB
;170	FDV	(FDVL)	FDVM	FDVB	FDVR	FDVRI	FDVRM	FDVRB
;	0	1	2	3	4	5	6	7
;200	MOVE	MOVEI	MOVEM	MOVES	MOVS	MOVSI	MOVSM	MOVSS
;210	MOVN	MOVNI	MOVNM	MOVNS	MOVM	MOVMI	MOVMM	MOVMS
;220	IMUL	IMULI	IMULM	IMULB	MUL	MULI	MULM	MULB
;230	IDIV	IDIVI	IDIVM	IDIVB	DIV	DIVI	DIVM	DIVB
;240	ASH	ROT	LSH	JFFO	ASHC	ROTC	LSHC	(UUO)
;250	EXCH	BLT	AOBJP	AOBJN	JRST	JFCL	XCT	MAP
;260	PUSHJ	PUSH	POP	POPJ	JSR	JSP	JSA	JRA
;270	ADD	ADDI	ADDM	ADDB	SUB	SUBI	SUBM	SUBB
;	0	1	2	3	4	5	6	7
;300	CAI	CAIL	CAIE	CAILE	CAIA	CAIGE	CAIN	CAIG
;310	CAM	CAML	CAME	CAMLE	CAMA	CAMGE	CAMN	CAMG
;320	JUMP	JUMPL	JUMPE	JUMPLE	JUMPA	JUMPGE	JUMPN	JUMPG
;330	SKIP	SKIPL	SKIPE	SKIPLE	SKIPA	SKIPGE	SKIPN	SKIPG
;340	AOJ	AOJL	AOJE	AOJLE	AOJA	AOJGE	AOJN	AOJG
;350	AOS	AOSL	AOSE	AOSLE	AOSA	AOSGE	AOSN	AOSG
;360	SOJ	SOJL	SOJE	SOJLE	SOJA	SOJGE	SOJN	SOJG
;370	SOS	SOSL	SOSE	SOSLE	SOSA	SOSGE	SOSN	SOSG
;	0	1	2	3	4	5	6	7
;400	SETZ	SETZI	SETZM	SETZB	AND	ANDI	ANDM	ANDB
;410	ANDCA	ANDCAI	ANDCAM	ANDCAB	SETM	SETMI	SETMM	SETMB
;420	ANDCM	ANDCMI	ANDCMM	ANDCMB	SETA	SETAI	SETAM	SETAB
;430	XOR	XORI	XORM	XORB	IOR	IORI	IORM	IORB
;440	ANDCB	ANDCBI	ANDCBM	ANDCBB	EQV	EQVI	EQVM	EQVB
;450	SETCA	SETCAI	SETCAM	SETCAB	ORCA	ORCAI	ORCAM	ORCAB
;460	SETCM	SETCMI	SETCMM	SETCMB	ORCM	ORCMI	ORCMM	ORCMB
;470	ORCB	ORCBI	ORCBM	ORCBB	SETO	SETOI	SETOM	SETOB
;	0	1	2	3	4	5	6	7
;500	HLL	HLLI	HLLM	HLLS	HRL	HRLI	HRLM	HRLS
;510	HLLZ	HLLZI	HLLZM	HLLZS	HRLZ	HRLZI	HRLZM	HRLZS
;520	HLLO	HLLOI	HLLOM	HLLOS	HRLO	HRLOI	HRLOM	HRLOS
;530	HLLE	HLLEI	HLLEM	HLLES	HRLE	HRLEI	HRLEM	HRLES
;540	HRR	HRRI	HRRM	HRRS	HLR	HLRI	HLRM	HLRS
;550	HRRZ	HRRZI	HRRZM	HRRZS	HLRZ	HLRZI	HLRZM	HLRZS
;560	HRRO	HRROI	HRROM	HRROS	HLRO	HLROI	HLROM	HLROS
;570	HRRE	HRREI	HRREM	HRRES	HLRE	HLREI	HLREM	HLRES
;	0	1	2	3	4	5	6	7
;600	TRN	TLN	TRNE	TLNE	TRNA	TLNA	TRNN	TLNN
;610	TDN	TSN	TDNE	TSNE	TDNA	TSNA	TDNN	TSNN
;620	TRZ	TLZ	TRZE	TLZE	TRZA	TLZA	TRZN	TLZN
;630	TDZ	TSZ	TDZE	TSZE	TDZA	TSZA	TDZN	TSZN
;640	TRC	TLC	TRCE	TLCE	TRCA	TLCA	TRCN	TLCN
;650	TDC	TSC	TDCE	TSCE	TDCA	TSCA	TDCN	TSCN
;660	TRO	TLO	TROE	TLOE	TROA	TLOA	TRON	TLON
;670	TDO	TSO	TDOE	TSOE	TDOA	TSOA	TDON	TSON
.TOC	"CONTROL RAM DEFINITIONS -- J, AD"
;FIELDS ARRANGED FOR READABILITY, NOT COMPACTNESS
; IN THE PROCESSOR, BITS ARE SCATTERED IN ANOTHER ORDER

U0/=<0:0>D,0	;BIT 0 UNUSED
J/=<1:11>+	;SYMBOLS WILL BE DEFINED BY TAGS (CRA1&CRA2)

;MAIN ADDER CONTROLS.  Bit 0 = carry in, bit 1 = boolean operation
; Bits 2-5 are S8-S1 of the 10181 ALU chip.  For normal arithmetic,
; the AD and ADX are separated unless SPEC/AD LONG or equivalent is given.


AD/=<12:17>	; (DP03, EXCEPT CARRY IN, ON CTL1)
	A+1=40,1
	A+XCRY=00,1
;	A+ANDCB=01,1
;	A+AND=02,1
	A*2=03,1
	A*2+1=43,1
;	OR+1=44,1
;	OR+ANDCB=05,1
	A+B=06,1
	A+B+1=46,1
;	A+OR=07,1
	ORCB+1=50,1
	A-B-1=11,1
	A-B=51,1
;	AND+ORCB=52,1
;	A+ORCB=53,1
	XCRY-1=54,1
;	ANDCB-1=15,1
;	AND-1=16,1
	A-1=17,1
		;ADDER LOGICAL FUNCTIONS
	SETCA=20
	ORC=21		;NAND
	ORCA=22
	1S=23
	ANDC=24		;NOR
	NOR=24
	SETCB=25
	EQV=26
	ORCB=27
	ANDCA=30
	XOR=31
	B=32
	OR=33
	0S=34
	ANDCB=35
	AND=36
	A=37
		;BOOLEAN FUNCTIONS FOR WHICH CRY0 IS INTERESTING
	CRY A EQ -1=60,1	;GENERATE CRY0 IF A=1S, AD=SETCA
	CRY A.B#0=36,1		;CRY 0 IF A&B NON-ZERO, AD=AND
	CRY A#0=37,1		;GENERATE CRY0 IF A .NE. 0, AD=A
	CRY A GE B=71,1		;CRY0 IF A .GE. B, UNSIGNED; AD=XOR
.TOC	"CONTROL RAM DEFINITIONS -- DATA PATH MIXERS"

ADA/=<18:20>		; (DP03)
	AR=0
	ARX=1
	MQ=2
	PC=3
ADA EN/=<18:18>		;ADA ENABLE ALSO ENABLES ADXA (DP03)
	EN=0
	0S=1
U21/=<21:21>D,0		;BIT 21 UNUSED
ADB/=<22:23>		;CONTROLS ADB AND ADXB (DP03)
	FM=0,,1		;MUST HAVE TIME FOR PARITY CHECK
	BR*2=1		;ADB35 is BRX0; ADXB35 is 0
	BR=2
	AR*4=3		;ADB34,35 are ARX0,1; ADXB34,35 are 0
U23/=<23:23>D,1		;PREVENT DEFAULT SELECTION OF FM
			;FORCE IT TO TAKE ONE OF THE SHORTER
			;PATHS IF FM NOT NEEDED ALSO DISABLES
			;PARITY CHECKING LOGIC

;REGISTER INPUTS

AR/=<24:26>D,0		; (DP01)
	AR=0
	ARMM=0		;REQUIRES SPECIAL FUNCTION
	MEM=0		;[346] MB WAIT will poke to 1 (CACHE) or 2 (AD)
	CACHE=1		;ORDINARILY SELECTED BY HWARE
	AD=2
	EBUS=3
	SH=4
	AD*2=5		;Low bit from ADX0
	ADX=6
	AD*.25=7
ARX/=<27:29>D,0		; (DP02)
	ARX=0		;[345] BY DEFAULT
	MEM=0		;[346] Gets poked by MB WAIT to 1 or 2
	CACHE=1		;ORDINARILY BY MBOX RESP
	AD=2
	MQ=3
	SH=4
	ADX*2=5		;Low bit from MQ0
	ADX=6
	ADX*.25=7	;High bits from AD34,35
BR/=<30:30>D,0		;DEFAULT TO RECIRCULATE (DP04)
	AR=1
BRX/=<31:31>D,0		;DEFAULT TO RECIRCULATE (DP04)
	ARX=1
MQ/=<32:32>D,0		;DEFAULT TO RECIRCULATE (DP02)
	SH=1		;LOAD FROM SHIFT MATRIX
	MQ*2=0		;With SPEC/MQ SHIFT--Low bit from AD CRY -2
	MQ*.25=1	;With SPEC/MQ SHIFT--High bits from ADX34, ADX35
	MQ SEL=0	;WITH COND/REG CTL
	MQM SEL=1	;WITH COND/REG CTL
;FMADR SELECTS THE SOURCE OF THE FAST MEMORY ADDRESS,
; RATHER THAN PROVIDING THE ADDRESS ITSELF

FMADR/=<33:35>		; (APR4&APR5)
	AC0=0		;IR 9-12
	AC1=1		;<IR 9-12>+1 MOD 16
	XR=2		;ARX 14-17
	VMA=3		;VMA 32-35
	AC2=4		;<IR 9-12>+2 MOD 16
	AC3=5		;<IR 9-12>+3 MOD 16
	AC+#=6		;CURRENT BLOCK, AC+ MAGIC #
	#B#=7		;BLOCK AND AC SELECTED BY # FIELD

.TOC	"CONTROL RAM DEFINITIONS -- 10-BIT LOGIC"

SCAD/=<36:38>		; (SCD1)
	A=0
	A-B-1=1
	A+B=2
	A-1=3
	A+1=4
	A-B=5
	OR=6
	AND=7
SCADA/=<39:41>		; (SCD1)
	FE=0
	AR0-5=1		;BYTE POINTER P FIELD
	AR EXP=2	;<AR 01-08> XOR <AR 00>
	#=3		;SIGN EXTENDED WITH #00
SCADA EN/=<39:39>	; (SCD1)
	0S=1
U42/=<42:42>D,0	;BIT 42 UNUSED
SCADB/=<43:44>		; (SCD1)
	SC=0
	AR6-11=1	;BYTE POINTER S FIELD
	AR0-8=2
	#=3		;NO SIGN EXTENSION
U45/=<45:45>D,0		;BIT 45 UNUSED
SC/=<46:46>D,0		;RECIRCULATE BY DEFAULT (SCD2)
	FE=0		;WITH SCM ALT
	SCAD=1
	AR SHIFT=1	;WITH SCM ALT ;AR 18, 28-35
FE/=<47:47>D,0		;RECIRCULATE BY DEFAULT (SCD2)
	SCAD=1
U48/=<48:48>D,0		;BIT 48 UNUSED
.TOC	"CONTROL RAM DEFINITIONS -- SHIFT, ARMM, VMA, TIME"

SH/=<49:50>		; (SH1)
	SHIFT AR!ARX=0	;LEFT BY (SC)
	AR=1
	ARX=2
	AR SWAP=3	;HALVES SWAPPED
ARMM/=<49:50>		;SAME BITS AS SH CONTROL (SCD3)
	#=0		;MAGIC # 0-8 TO AR 0-8
	EXP_SIGN=1	;AR1-8 _ AR0
	SCAD EXP=2	;AR0-8_SCAD
	SCAD POS=3	;AR0-5_SCAD
VMAX/=<49:50>		;SAME BITS AS SH CONTROL (VMA4)
	VMAX=0		;VMA SECTION #
	PC SEC=1	;PC SECTION #
	PREV SEC=2	;PREVIOUS CONTEXT SECT
	AD12-17=3
U51/=<51:51>D,0		;BIT 51 UNUSED
VMA/=<52:53>D,0		;ALSO CONTROLLED BY SPECIAL FUNCTIONS
	VMA=0		;BY DEFAULT
	PC=1		;MAY BE OVERRIDDEN BY MCL LOGIC	TO LOAD FROM AD
	LOAD=1		; IF WE KNOW IT WILL BE OVERRIDDEN, USE THIS
	PC+1=2
	AD=3		;ENTIRE VMA, INCLUDING SECTION
TIME/=<54:55>T		;CONTROLS MINIMUM MICROINSTRUCTION EXECUTION
			; TIME, COUNTING MBOX CLOCK TICKS (CLK)
			;ASSEMBLER GENERALLY TAKES CARE OF THIS
	2T=0		;2 TICKS
	3T=1		;3 TICKS
	4T=2		;4 TICKS
	5T=3		;5 TICKS (COND/DIAG FUNC & #00, --> .5 USEC)

.TOC	"CONTROL RAM DEFINITIONS -- MEM SPECIAL FUNCTIONS"

MEM/=<56:59>D,0		;(MCL1, except MB WAIT on CON5 and CLK4)
;
;	Note:  MB WAIT is implicit whenever bit 58 is set.
;
;	NOP=0		;DEFAULT
	ARL IND=1	;CONTROL AR LEFT MUX FROM # FIELD
	MB WAIT=2	;WAIT FOR MBOX RESP IF PENDING
	RESTORE VMA=3	;AD FUNC WITHOUT GENERATING A REQUEST
	A RD=4		;OPERAND READ and load PXCT bits
	B WRITE=5	;CONDITIONAL WRITE ON DRAM B 01
	FETCH=6		;LOAD NEXT INSTR TO ARX (CONTROL BY #)
	REG FUNC=7	;MBOX REGISTER FUNCTIONS
	AD FUNC=10	;FUNCTION LOADED FROM AD LEFT
	EA CALC=11	;FUNCTION DECODED FROM # FIELD
	LOAD AR=12
	LOAD ARX=13
	RW=14		;READ, TEST WRITABILITY
	RPW=15		;READ-PAUSE-WRITE
	WRITE=16	;FROM AR TO MEMORY
	IFET=17		;UNCONDITIONAL instruction FETCH
.TOC	"CONTROL RAM DEFINITIONS -- SKIP/COND SPECIAL FUNCTIONS"

SKIP/=<60:65>D,0	;MICRO-PROGRAM SKIPS
			; 40-57 DECODED ON (CRA2)
;	SPARE=40
	EVEN PAR=41,,1	;AR PARITY IS EVEN
	BR0=42		;BR BIT 00
	ARX0=43		;ARX BIT 00
	AR18=44		;AR BIT 18
	AR0=45		;AR BIT 00
	AC#0=46		;IR9-12 .EQ. 0
	SC0=47		;SC BIT 00
	PC SEC0=50
	SCAD0=51,,1	;Sign of SCAD output--WRONG ON OVERFLOW FROM BIT 1!!!
	SCAD#0=52,,1	;SCAD OUTPUT IS NON-ZERO
	ADX0=53,1	;ADDER EXTENSION BIT 00
	AD CRY0=54,1	;CARRY OUT OF AD BIT -2 (BOOLE IGNORED)
	AD0=55,1	;ADDER BIT 00
	AD#0=56,1	;AD BITS 00-35 CONTAIN SOME ONES
	-LOCAL AC ADDR=57	;VMA18-31 =0 ON LOCAL REF IN SEC >1

			; 60-77 DECODED ON (CON2)
	FETCH=60	;VMA FETCH (LAST CYCLE WAS A FETCH)
	KERNEL=61	;PC IS IN KERNEL MODE
	USER=62		;PC IS IN USER MODE
	PUBLIC=63	;PC IS PUBLIC (INCLUDING SUPER)
	RPW REF=64	;MIDDLE OF READ-PAUSE-WRITE CYCLE
	PI CYCLE=65	;PI CYCLE IN PROGRESS
	-EBUS GRANT=66	;PI HASN'T RELEASED BUS FOR CPU USE
	-EBUS XFER=67	;NO TRANSFER RECIEVED FROM DEVICE
	INTRPT=70	;AN INTERRUPT REQUEST WAITING FOR SERVICE
	-START=71	;NO CONTINUE BUTTON
	RUN=72		;PROCESSOR NOT HALTED
	IO LEGAL=73	;KERNEL, PI CYCLE, USER IOT, OR DEVICE .GE. 740
	P!S XCT=74	;PXCT OR SXCT
	-VMA SEC0=75	;VMA SECTION NUMBER (13-17) IS NOT ZERO
	AC REF=76,,1	;VMA .LT.20 ON READ OR WRITE
	-MTR REQ=77	;INTERRUPT REQUEST NOT DUE TO METER
;SKIP/COND FIELD CONTINUED

COND/=<60:65>D,0	;NON-SKIP SPECIAL FUNCTIONS
			;0-7 DECODED ON (CTL2)
;	NOP=0		;BY DEFAULT
	LD AR0-8=1
	LD AR9-17=2	;Gates VMAX into ARMM (see VMA4)
	LD AR18-35=3
	AR CLR=4
	ARX CLR=5
	ARL IND=6	;CONTROL AR LEFT, CALL, AND CLEAR BITS FROM #
	REG CTL=7	;CONTROL AR LOAD, EXP TST, AND MQ FROM #
			; 10-37 DECODED ON (CON1)
	FM WRITE=10	;WRITE AR INTO CURRENTLY ADDRESSED FM LOC
	PCF_#=11	;SET PC FLAGS FROM # FIELD
	FE SHRT=12	;SHIFT FE RIGHT 1
	AD FLAGS=13	;SET PC CRY0, CRY1, OVRFLO, TRAP1 AS APPROPRIATE
	LOAD IR=14	;LATCH AD OR CACHE DATA INTO IR, load PXCT bits
	SPEC INSTR=15	;SET/CLR SXCT, PXCT, PICYC, TRAP INSTR FLAGS
	SR_#=16		;CONTROL FOR STATE REGISTER and PXCT bits (CON3, MCL4)
	SEL VMA=17	;READ VMA THROUGH ADA/PC
	DIAG FUNC=20	;SELECT DIAGNOSTIC INFO ONTO EBUS
	EBOX STATE=21	;SET STATE FLOPS
	EBUS CTL=22	;I/O FUNCTIONS
	MBOX CTL=23
;	SPARE=24
	LONG EN=25	;THIS WORD CAN BE INTERPRETED AS LONG INDIRECT
;	SPARE=26
;	SPARE=27
	VMA_#=30
	VMA_#+TRAP=31
	VMA_#+MODE=32
	VMA_#+AR32-35=33
	VMA_#+PI*2=34
	VMA DEC=35	;VMA_VMA-1
	VMA INC=36	;VMA_VMA+1
	LD VMA HELD=37	;HOLD VMA ON SIDE

CALL/=<66:66>D,0	;CALL function--May not coexist with DISP/RETURN
	CALL=1		;GOOD TO 15 LEVELS IN MODEL B
.TOC	"CONTROL RAM DEFINITIONS -- DISP/SPEC SPECIAL FUNCTIONS"

DISP/=<67:71>D,10	;0-7 AND 30-37 ARE DISPATCHES (CRA1&CRA2)
	DIAG=0
	DRAM J=1
	DRAM A RD=2	;IMPLIES INH CRY18
	RETURN=3	;POPJ return--may not coexist with CALL
	PG FAIL=4	;PAGE FAIL TYPE DISP
	SR=5		;16 WAYS ON STATE REGISTER
	NICOND=6	;NEXT INSTRUCTION CONDITION (see NEXT for detail)
	SH0-3=7,,1	;[337] 16 WAYS ON HIGH-ORDER BITS OF SHIFTER
	MUL=30		;FE0*4 + MQ34*2 + MQ35; implies MQ SHIFT, AD LONG
	DIV=31,,1	;FE0*4 + BR0*2 + AD CRY0; implies MQ SHIFT, AD LONG
	SIGNS=32,1	;ARX0*8 + AR0*4 + BR0*2 + AD0
	DRAM B=33	;8 WAYS ON DRAM B FIELD
	BYTE=34,,1	;FPD*4 + AR12*2 + SCAD0--WRONG ON OVERFLOW FROM BIT 1!!
	NORM=35,2	;See normalization for details. Implies AD LONG
	EA MOD=36	;(ARX0 or -LONG EN)*8 + -(LONG EN and ARX1)*4 +
			;ARX13*2 + (ARX2-5) or (ARX14-17) non zero; enable
			;is (ARX0 or -LONG EN) for second case.  If ARX18
			;is 0, clear AR left; otherwise, poke ARL select
			;to set bit 2 (usually gates AD left into ARL)

SPEC/=<67:71>D,10	;NON-DISPATCH SPECIAL FUNCTIONS (CTL1)
;	NOP=10		;DEFAULT
	INH CRY18=11
	MQ SHIFT=12	;ENABLE MQ*2, MQ SHRT2
	SCM ALT=13	;ENABLE FE, ARSHIFT
	CLR FPD=14
	LOAD PC=15
	XCRY AR0=16	;CARRY INTO AD IS XOR'D WITH AR00
	GEN CRY18=17
	STACK UPDATE=20	;CONTROL CRY18 IF LOCAL STACK
;	SUBR CALL=21	;Obsolete--model A only
	ARL IND=22	;# SPECIFIES ARL MIX, ENABLES, & CALL
	MTR CTL=23	;# CONTROLS METERS
	FLAG CTL=24	;FUNCTION ENCODED IN # FIELD
	SAVE FLAGS=25	;TELLS PI CYCLE TO HOLD INTRPT
	SP MEM CYCLE=26	;MEM REQUEST IS MODIFIED BY #
	AD LONG=27	;AD BECOMES 72 BIT ALU

U73/=<72:73>D,0		;BITS 72-73 UNUSED

MARK/=<74:74>D,0	;FIELD SERVICE "MARK" BIT
.TOC	"CONTROL RAM DEFINITIONS -- MAGIC NUMBER FIELD"

#/=<75:83>D,0		;THE INFAMOUS "MAGIC NUMBERS"

MAJVER/=<75:80>		;[356] Major version number
MINVER/=<81:83>		;[356] Minor version number

;
;	Options bits, designating different assemblies from the same sources
;

KLPAGE/=<75:75>			;KLPAGING
	OPTIONS=1

LONGPC/=<76:76>			;LONG PC FORMAT AS IN EXTENDED ADDRESSING
	OPTIONS=1		;(The model A used a different format due
				; to space limitations)
NONSTD/=<77:77>			;NONSTANDARD (EG DIAGNOSTIC) MICROCODE
.IF/NONSTD
	OPTIONS=1
.IFNOT/NONSTD
	OPTIONS=0
.ENDIF/NONSTD

PV/=<78:78>			;MODEL B - PV CPU
	OPTIONS=1

PMOVE/=<79:79>			;[435] Physical memory move instructions
	OPTIONS=1

ISTAT/=<83:83>			;STATISTICS GATHERING CODE (IE TRACKS)
.IF/INSTR.STAT
	OPTIONS=1
.IFNOT/INSTR.STAT
	OPTIONS=0
.ENDIF/INSTR.STAT

PXCT/=<75:77>		;(MCL4) Loaded by CON/SR_#, CON/LOAD IR, and MEM/A RD
			;Bit 0 enables the VMAX to not come from the AD when
			; VMA/AD (allowing local AC refs, for example).  Bits
			; 1 and 2 select which PXCT bits a memory reference
			; will select for possible previous context.

ACB/=<77:79>		;AC block number. Used with FMADR/#B#
	PAGB=6		;AC block used for KL paging registers
	MICROB=7	;AC block for general microcode scratch

AC#/=<80:83>		;AC number used with ACB or AC-OP (below)

;
;	Warning:  when AC-OP is used with COND/FM WRITE, the previous micro-
;	instruction must have the same # field as the current one.  Otherwise
;	the address lines won't make it in time for the write pulse.  [210]
;
AC-OP/=<75:79>		;CONTROLS AC #.  AD functions < 40 all work
	AC+#=6
	#=32		;JUST AC#
	OR=33		;AC <OR> AC#

;VARIOUS SPECIAL FUNCTIONS ENABLE SPECIAL DECODING OF THE
; "MAGIC #" FIELD, AS FOLLOWS:

;SPECIAL DATA PATH CONTROLS

;CALL/=<75:75>		;ENABLED BY ARL IND (CTL2)--Model A only
;	CALL=1
AR0-8/=<76:76>		;ENABLED BY ARL IND (CTL2)
	LOAD=1
CLR/=<77:80>		;ENABLED BY ARL IND (CTL2)
	MQ=10
	ARX=4
	ARL=2
	ARR=1
	AR=3
	AR+ARX=7
	AR+MQ=13
	ARX+MQ=14
	AR+ARX+MQ=17
	ARL+ARX=6
	ARL+ARX+MQ=16
	ARR+MQ=11
ARL/=<81:83>		;ENABLED BY ARL IND (CTL2)
	ARL=0
	ARMM=0		;REQUIRES SPECIAL FUNCTION
	CACHE=1		;ORDINARILY SELECTED BY HWARE
	AD=2
	EBUS=3
	SH=4
	AD*2=5
	ADX=6
	AD*.25=7
AR CTL/=<75:77>		;ENABLED BY COND/REG CTL (CTL2)
	AR0-8 LOAD=4
	AR9-17 LOAD=2	;Gates VMAX into ARMM (see VMA4)
	ARR LOAD=1
	ARL LOAD=6
EXP TST/=<80:80>	;ENABLED BY COND/REG CTL (CTL1)
	AR_EXP=1
MQ CTL/=<82:83>		;ENABLED BY COND/REG CTL (CTL2)
;	MQ=0		;WITH MQ/MQ SEL
	MQ*2=1		;WITH MQ/MQ SEL--Low bit is ADX0
;	MQ*.5=2		; " (DROPS BITS 0,6,12,18,24,30)
	0S=3		; "
	SH=0		;WITH MQ/MQM SEL
	MQ*.25=1	;WITH MQ/MQM SEL--High bits are ADX34, ADX35
	1S=2		; "
	AD=3		; "
;SPECIAL CONTROL OF EBOX FLAGS & FUNCTIONS

PC FLAGS/=<75:83>	;ENABLED BY COND/PCF_# (SCD4)
;	OVERF=400	;Any arithmetic overflow
;	FLOVERF=200	;Floating overflow
	FPD=100		;SET FIRST PART DONE
	TRAP2=40	;SET TRAP2 (PDL OVFLO)
	TRAP1=20	;SET TRAP1 (ARITH OVFLO)
;	EXPUND=10	;Exponent underflow
;	NO DIV=4	;No divide
	AROV=420	;SET ARITH OVFLO & TRAP1
	FLOV=620	;SAME, PLUS FLOATING OVFLO
	FXU=630		;FLOV + EXP UNDERFLOW
	DIV CHK=424	;NO DIVIDE + AROV
	FDV CHK=624	;FLOATING NO DIVIDE
FLAG CTL/=<75:83>	;ENABLED BY SPEC/FLAG CTL (SCD5)
	RSTR FLAGS=420	;AS IN JRSTF
	JFCL=602	;FORCE PC 00 = AROV
	JFCL+LD=622	;SECOND PART OF JFCL -- CLEAR TESTED FLAGS
	DISMISS=502	;CLEAR PI CYCLE IF SET (CON5)
			; ELSE DISMISS HIGHEST PI HOLD
	DISMISS+LD=522	;LOAD FLAGS AND DISMISS
	HALT=442	;STOP PROCESSOR IF LEGAL (CON2)
	SET FLAGS=20	;AS IN MUUO
	PORTAL=412	;CLEAR PUBLIC IF PRIVATE INSTR
SPEC INSTR/=<75:83>	;ENABLED BY COND/SPEC INSTR
	SET PI CYCLE=714; (CON5)
	KERNEL CYCLE=200;MAKE IO LEGAL, EXEC ADDR SPACE (CON4)
	INH PC+1=100	;TO MAKE JSR WORK IN TRAP, INTRPT (CON4)
	SXCT=40		;START SECTION XCT (MCL4)
	PXCT=20		;START PREV CONTXT XCT (MCL4)
	INTRPT INH=10	;INHIBIT INTERRUPTS (CON4)
	INSTR ABORT=4	; (CON2)
	HALTED=302	;TELL CONSOLE WE'RE HALTED (CON4)
	CONS XCT=310	;FLAGS FOR INSTR XCT'D FROM CONSOLE
	CONT=0		;RESTORE NORMAL STATE FOR CONTINUE
FETCH/=<75:83>		;ENABLED BY MEM/FETCH
	UNCOND=400
			;LOW 2 BITS DECODED ON (IR3)
	COMP=201,2	;DEPENDING ON AD AND DRAM B
	SKIP=202,2
	TEST=203,1
	JUMP=502,2	;AS IN JUMPX, ON AD AND DRAM B
	JFCL=503,1	;JUMP ON TEST CONDITION
;SPECIAL MEMORY REQUEST FUNCTIONS

EA CALC/=<75:83>	;SPECIFIC CONTROLS FOR MEM/EA CALC
;	LOAD AR=400
;	LOAD ARX=200
;	PAUSE=100	;Freeze memory--always use with 040
;	WRITE=040	;SET VMA WRITE
;	PREV EN=20	;PREV CONTXT SELECTED BY SR AND PXCT
;	INDIRECT=10	;PREV CONTXT FOR EA CALC
;	EA=2		;RESTORATION OF ORIGINAL EA CONDITIONS
;	STACK=1		;PREV CONTXT SELECTED BY PXCT B12
	A IND=230	;INDIRECT AT FIRST EA CALC TIME
	BYTE LD=420	;Read byte data to AR only [337]
	BYTE RD=620	;READ BYTE DATA TO AR & ARX
	BYTE RD PC=621	;READ BYTE DATA TO AR & ARX WITH PC SECTION
	BYTE RPW=760	;Read byte data to AR, ARX, write test, pause [312]
	BYTE IND=610	;INDIRECT AT BYTE EA CALC TIME
	PUSH=041	;STORE TO STACK
	POP AR=421	;READ FROM STACK TO AR
	POP ARX=221	;READ FROM STACK TO ARX
	POP AR-ARX=621	;POP TO BOTH
	WRITE(E)=042
	LD AR(EA)=402	;LOAD AR GLOBAL/LOCAL AS IN EA
	LD AR+WR=440	;LOAD AR, TEST WRITABILITY
	LD ARX+WR=240	;LOAD ARX, TEST WRITABILITY

SP MEM/=<75:83>		;ENABLED BY SPEC/SP MEM CYCLE
	FETCH=400	;LOAD IR WHEN DATA ARRIVES (MCL5)
	USER=200	;FORCE USER OR UPT (MCL2)
	EXEC=100	;FORCE EXEC OR EPT (MCL3)
	SEC 0=40	;CLEAR VMAX (MCL4)
	UPT EN=20	;UPT IF USER EN (MCL3)
	EPT EN=10	;EPT IF NOT USER EN (MCL3)
	CACHE INH=2	; (MCL6)
	UNCSH+UNPAGE=103;UNCACHED AND UNPAGED
	UNPAGED+CACHED=101	;physical reference with cache enabled.
.IFNOT/MULTI
	UNPAGED=101	; (MCL6)
	EPT=111
	EPT CACHE=111	;[260]
	EPT FETCH=511
	UPT=221
	UPT FETCH=621
	PT=31
	PT FETCH=431
.IF/MULTI
	UNPAGED=103	; (MCL6)
	EPT=113
	EPT CACHE=111	;[260]
	EPT FETCH=513
	UPT=223
	UPT FETCH=623
	PT=33
	PT FETCH=433
.ENDIF/MULTI
;MBOX CONTROLS

MREG FNC/=<75:83>	;ENABLED BY MEM/REG FUNC (APR6)
	SBUS DIAG=407	;PERFORM SBUS DIAGNOSTIC CYCLE
	READ UBR=502	;ASK MBOX TO LOAD UBR INTO EBUS REG
	READ EBR=503	;PUT EBR INTO EBUS REG
	READ ERA=504
	WR REFILL RAM=505	;DISGUISED AS A "READ REG" FUNCTION
	LOAD CCA=606	;START A SWEEP
	LOAD UBR=602	;SETUP UBR FROM VMA
	LOAD EBR=603	;SETUP EBR FROM VMA
	MAP=140		;GET PHYS ADDR CORRESPONDING TO VMA (MCL6)
MBOX CTL/=<75:83>	;ENABLED BY COND/MBOX CTL (APR5)
	SET PAGE FAIL=200
	SET IO PF ERR=100
	CLR PT LINE(NK)=61,,1;[333] Clear valid if no Keep bit set
	PT DIR CLR(NK)=41;Enable clear of PT DIR for non keep entries
	CLR PT LINE=31,,1;CLEAR VALID FOR 4 ENTRIES (new pager board) [342]
	PT DIR WR=20,1	;WRITE PAGE TABLE DIRECTORY
	PT WR=10,1	;WRITE PAGE TABLE ENTRY SELECTED BY VMA
	PT DIR CLR=1	;SELECT FOR CLEARING PT DIR (PAG3)
	NORMAL=0	;RESET PT WR SELECTION
MTR CTL/=<81:83>	;FUNCTION DECODING FOR METERS (MTR3)
	CLR TIME=0		; USUALLY USED WITH DIAG FUNC
	CLR PERF=1
	CLR E CNT=2
	CLR M CNT=3
	LD PA LH=4
	LD PA RH=5
	CONO MTR=6
	CONO TIM=7
;I/O FUNCTIONS

EBUS CTL/=<75:83>	;ENABLED BY COND/EBUS CTL (APR3)
	GRAB EEBUS=400	;"EBUS RETURN" TAKES ECL EBUS FOR EBOX
	REQ EBUS=200
	REL EBUS=100	; (CON3)
	EBUS DEMAND=60	;ASSERT DEMAND, KEEP CS, FUNC
	EBUS NODEMAND=20;DROP DEMAND, KEEP CS, FUNC
;	CTL_IR=10	;SELECT F01 & F02 FROM IR
;	DISABLE CS=4	;TURN OFF CONTROLLER SELECT
;	DATAIO=2	;0 FOR CONI/O
;	INPUT=1		;0 FOR OUTPUT
	IO INIT=30	;ENABLE IR3-9 TO EBUS CONTROLLER SELECT,
			; IR10-12 (DECODED) TO FUNCTION
			; AND AR ONTO EBUS IF FUNCTION IS OUTPUT
	DATAO=26	;0'S TO CS, DATAO TO FCN, AND AR TO EBUS
	DATAI=27	;0'S TO CS, DATAI TO FCN
	REL EEBUS=0	;LEGGO
DIAG FUNC/=<75:83>	;ENABLED BY COND/DIAG FUNC (CTL3)
	.5 USEC=400,3		;STRETCH CLOCK TO LET EBUS SETTLE (CON?)
	LD PA LEFT=404,3	;LH PERF ANAL CONTROLS FROM RH (MTR)
	LD PA RIGHT=405,3	;RH PA CONTROLS FROM RH (MTR)
	CONO MTR=406,3		;ACCOUNTING CONTROLS (MTR)
	CONO TIM=407,3		;INTERVAL TIMER CONTROLS (MTR)
	CONO APR=414,3		; (CON3)
	CONO PI=415,3		; (CON3)
	CONO PAG=416,3		;CACHE & PAGING CTL (CON3)
	DATAO APR=417,3		;ADDRESS BREAK (CON3)
	DATAO PAG=620,3		;AC BLOCKS & PREV CONTXT (CON3)
	LD AC BLKS=425,3	;FORCE LOADING AC BLOCKS
	LD PCS+CWSX=426,3	;FORCE LOADING PREV CONTXT SEC, CWSX
	CONI PI(R)=500,3	;PI HOLD & ACTIVE TO LH (PI)
	CONI PI(L)=501,3	;PI GEN TO LH (PI)
	CONI APR(R)=510,3	;APR INTERRUPT & PIA TO LH (APR6)
	RD TIME=510,3		;TIME BASE TO RH (MTR5)
	DATAI PAG(L)=511,3	;AC BLOCKS, PREV CONTXT TO LH (APR6)
	RD PERF CNT=511,3	;PERFORMANCE COUNT TO RH (MTR5)
	CONI APR(L)=512,3	;APR INTERRUPT ENABLES TO LH (APR6)
	RD EBOX CNT=512,3	;EBOX COUNT TO RH (MTR5)
	DATAI APR=513,3		;ADDR BREAK CONDITIONS TO LH (APR6)
	RD CACHE CNT=513,3	;CACHE COUNT TO RH (MTR5)
	RD INTRVL=514,3		;INTERVAL TIMER TO RH (MTR5)
	RD PERIOD=515,3		;PERIOD REGISTER TO RH (MTR5)
	CONI MTR=516,3		;CONTROLS & PIA TO RH (MTR5)
	RD MTR REQ=517,3	;ENCODED UPDATE REQUEST TO 20-22 (MTR5)
	CONI PI(PAR)=530,3	;WRITE EVEN PARITY ENABLES TO RH (CON1)
	CONI PAG=531,3		;CACHE & TRAP CTL TO RH (CON1)
	RD EBUS REG=567,3	;EBUS REGISTER IN MBOX (MBZ1 & MBC1)

PARITY/=0,0,0,P		;USE ANY AVAILABLE FIELD FOR PARITY
.TOC	"DISPATCH RAM DEFINITIONS"
;FIELDS ARE ARRANGED FOR EASY READING, NOT COMPACTNESS

	.DCODE
A/=<0:2>		;OPERAND FETCH MODE
	IMMED=0		;IMMEDIATE
	IMMED-PF=1	;IMMEDIATE, START PREFETCH
	ADDR=2		;FULL EFFECTIVE ADDRESS
	WR-TST=3	;TEST WRITABILITY
	READ=4		;READ ONLY
	READ-PF=5	;READ, THEN PREFETCH
	RD-WR=6		;READ WRITE (SEPARATE CYCLES)
	RD-P-WR=7	;READ PAUSE WRITE

B/=<3:5>		;STORE RESULTS AT--
	DBL AC=1	;DOUBLE RESULT TO AC & AC+1
	DBL BOTH=2	;MULB, DIVB, ETC
	SELF=3		;SELF MODE INSTRUCTIONS
	AC=5		;SINGLE RESULT TO AC, PREFETCH IN PROG
	MEM=6		;RESULT TO MEMORY
	BOTH=7		;SINGLE RESULT TO MEMORY AND AC

	SJC-=3		;SKIP JUMP COMPARE CONTROLS
	SJCL=2
	SJCE=1
	SJCLE=0
	SJCA=7
	SJCGE=6
	SJCN=5
	SJCG=4
B0/=<3:3>		;INVERTS VARIOUS TEST, SKIP, AND JUMP CONTROLS
	CRY0(0)=0	;TEST TST CAUSES PC SKIP IF CRY0=0
	CRY0(1)=1	; SAME IF CRY0=1
B1-2/=<4:5>		;FLOATING RESULT STORE MODE
	AC=1	;RESULT TO AC
	MEM=2	;RESULT JUST TO MEM
	BOTH=3	;RESULT TO BOTH

PARITY/=<11:11>P
;
;	The J field is the starting location of the microroutine to
;	execute the instruction.  Note that the 40 and 20 bits must
;	always be zero.  Also, even-odd pairs of DRAM J fields may
;	differ only in the low order three bits.  (Someone thought he
;	was being very clever when he designed the machine this way.
;	It probably reduced our transfer cost by at least five dollars,
;	after all, and the microcode pain that occurred later didn't cost
;	anything, in theory.)
;
J/=<14:23>		;EXECUTOR
	.UCODE

.BIN