COMMENT ⊗   VALID 00032 PAGES VERSION 17-1(12)
RECORD PAGE   DESCRIPTION
 00001 00001
 00004 00002	HISTORY
 00008 00003	 MANY DECLARATIONS
 00014 00004	PROCESS VARIABLE NUMBERS
 00017 00005	event variables
 00018 00006	procedure descriptors & null process skeleton
 00020 00007	DSCR SPROUT -- THE PROCESS SPROUTER
 00027 00008	
 00034 00009	
 00035 00010	routines for inserting & deleting set elements
 00039 00011	USER REQUESTED SCHEDULING
 00044 00012	HERE(RESUME)
 00048 00013	SUSPEND and TERMINATE runtime routines
 00051 00014	The JOIN runtime routine
 00053 00015	THE MAIN PROCESS INITIALIZER
 00055 00016	CALLER , MYPROC, AND PSTATUS 
 00057 00017	 PRISET -- ROUTINE USER CALLS TO CHANGE PRIORITY 
 00058 00018	SPECIAL GC ROUTINE FOR PROCESSES
 00059 00019	INTERRUPT ROUTINES
 00063 00020	THE INTERRUPT PROCESS
 00066 00021	
 00067 00022	 CAUSE 
 00069 00023	CAUSE1 -- ROUTINE TO DO ACTUAL WORK 
 00072 00024	ANSWER -- subroutine used by CAUSE
 00074 00025	DELWRQ -- delete all wait requests
 00075 00026	INTERROGATE
 00077 00027	ASK -- used by INTERROGATE
 00080 00028	MKEVTT,SETCP,& SETIP
 00081 00029	SPARE HERE TABLE ENTRIES
 00082 00030	COMPIL(IRP,,,,,,DUMMYFORGDSCISS)
 00084 00031	HERE(INTTBL)
 00087 00032	PROCEDURES TO ENABLE FOR INTERRUPTS
 00089 ENDMK
⊗;
COMMENT ⊗HISTORY
AUTHOR,REASON
021  102100000014  ⊗;


COMMENT ⊗
VERSION 17-1(12) 12-8-73 BY JRL  REMOVE SPECIAL STANFORD CHARACTERS(WHERE POSSIBLE)
VERSION 17-1(11) 12-8-73 BY RHT FIX IEXT5 SCREW FOR EXPO WORLD
VERSION 17-1(10) 12-8-73 BY RHT CHANGE PLACE WHERE REMEMBER THE APRENB BITS
VERSION 17-1(9) 12-4-73 BY rht fix process string garb coll routine
VERSION 17-1(8) 12-3-73 BY RHT MAKE SUSPEND(OTHERGUY) RETURN ANY
VERSION 17-1(7) 12-2-73 BY RHT ADD A FEW IRP SPARES
VERSION 17-1(6) 10-30-73 BY RHT BUG #OU# A TYPO IN %AA%
VERSION 17-1(5) 10-30-73 BY RHT BUG #OT# SPROUT APPLY BUG
VERSION 17-1(4) 10-28-73 BY RHT FEAT %AG% INITIALIZE RSMR←DADDY WHEN SPROUT
VERSION 17-1(27) 10-14-73 BY RHT BUG #OO# SPROUT APPLY TROUBLES
VERSION 17-1(26) 9-1-73 BY RHT FEATURE %AA% -- ADD CODE FOR SPROUT DEFAULTS
VERSION 17-1(25) 8-19-73 BY RHT FIX COMPIL FOR SAIIRP TO KNOW ABOUT APRACS
VERSION 17-1(24) 7-26-73 BY RHT **** VERSION 17 ****
VERSION 16-2(23) 7-15-73 BY RHT BUG #NC# ASKNTC WAS WRONG
VERSION 16-2(22) 7-15-73 BY RHT MORE OF BUG NB
VERSION 16-2(21) 7-15-73 BY RHT BUG #NB# NOT GETTING CONTXT RIGHT FOR USER IP
VERSION 16-2(20) 7-14-73 BY RHT MAKE SAIIRP A SEP COMPIL & PROVIDE FOR APPL$Y
VERSION 16-2(19) 7-14-73 BY RHT BUG #NA# RACE CONDITION IN URSCHD IWAIT
VERSION 16-2(18) 3-18-73 BY RHT MINOR MOD TO DFR1IN
VERSION 16-2(17) 2-4-73 BY RHT PROVIDE MORE HOOKS INTO EVENT ROUTINES
VERSION 16-2(16) 1-15-73 BY DCS BUG #LB# MINOR RESUME BUG
VERSION 16-2(15) 12-9-72 BY RHT MAKE MINOR ADJUSTMENTS TO RESUME
VERSION 16-2(14) 12-4-72 BY RHT INTERNAL PSTATUS
VERSION 16-2(13) 12-4-72 BY RHT  CURE POTENTIAL LOSSAGE OF STATIC LINKAGE
VERSION 16-2(12) 12-2-72 BY RHT REWRITE RESUME
VERSION 16-2(11) 12-1-72 BY RHT PROVIDE FOR DEFAULTS AS CORE VARS
VERSION 16-2(10) 11-30-72 BY RHT ADD THE DDFINT ROUTINE & ZAP POLL
VERSION 16-2(9) 11-29-72 BY DCS ADD INTERRUPT THINGS TO ENTRIES IN COMPIL
VERSION 16-2(8) 11-29-72 BY RHT RESUME DISPATCH NEEDS @
VERSION 16-2(7) 11-26-72 BY DCS ALLOW <ESC>I AS IO INTERRUPT (AVOID "NO ONE TO RUN")
VERSION 16-2(6) 11-26-72 BY DCS CHANGE OPDEF FOR INTENS TO 400030 FROM ..31
VERSION 16-2(5) 11-25-72 BY RHT FIX DATAB & INFTAB REFERENCES
VERSION 16-2(4) 11-15-72 BY RHT ADD OPTIONS FOR RESUME
VERSION 16-2(3) 11-15-72 BY RHT ADD INTERRUPTS,SPARE HERE ENTRIES
VERSION 16-2(2) 11-15-72 
VERSION 16-2(1) 11-15-72 

⊗;
; MANY DECLARATIONS
TENX<
↓APRISW←←1	;Not always what's wanted but better than 0.
>;TENX
COMPIL(PRC,,,,,,DUMMYFORGDSCISS)
DEFINE ENS1 < SPROUT,URSCHD,RESUME,SUSPEND,TERMINATE,JOIN,MAINPR,CALLER>
DEFINE ENS2 <%PSSGC,DDFINT,INTSET,CAUSE,ANSWER,INTERROGATE,SETCP>
DEFINE ENS3 <MKEVTT,SETIP,MYPROC,CLKMOD,DFR1IN,DFRINT,INTPRO>
DEFINE ENS4 <DFCPKT,PSTATUS,ASKNTC,CAUSE1,PRISET>
DEFINE EXT1 <LEAP,STKUWD,X44,GOGTAB,%ARSR1,SGINS,ALLPDP>
DEFINE EXT2 <CORGET,CORREL,INTRPT,INFTB,%SPGC,X22,%SPGC1,FP1DON,STACSV>
DEFINE EXT3 <X33,%ARRSR,DATM,SGLKBK,FP2DON,SGREM,STACRS,RUNNER,NOPOLL>
DEFINE EXT4 <X11,DEFSSS,DEFPSS,DEFPRI,DEFQNT,INTTBL,APPL$Y>

IFN APRISW <
DEFINE XJBCNI <JOBCNI>
DEFINE XJBTPC <JOBTPC>
DEFINE XJBAPR <JOBAPR>
DEFINE EXT5 <JOBCNI,JOBTPC,JOBAPR>
IFN ALWAYS <
EXTERN EXT5	;THESE ARE ALWAYS EXTERNAL
>;IFN ALWAYS
>;IFN APRISW
IFE APRISW <
DEFINE EXT5 <XJBCNI,XJBTPC,XJBAPR,JOBINT>
IFN ALWAYS <
EXTERNAL JOBINT ;THIS FELLOW IS ALWAYS EXTERNAL
>;IFN ALWAYS
>;IFE APRISW
COMMENT ⊗THIS IS FOR THE STUPIDITY OF SCISS ⊗

COMPXX(PRC,<ENS1,ENS2,ENS3,ENS4>,<EXT1,EXT2,EXT3,EXT4,EXT5>
	,<MULTIPLE PROCESS STUFF>,<SPRPDA>,HIIFPOSSIB)



BEGIN PROCSS

; (AC DEFNS)

; A,B,C,P,SP,RF AS BEFORE
KL	←D	;KILL LIST & SCRATCH
PB	←5	;PROCESS BASE
OPTS	←6	;HOLDS OPTIONS
PDA	←7	;HOLDS PDA
EVT	←10	;EVENT DATUM
NSP	←←10	;NEW SP
NP	←11	;NEW P
TMP	←LPSA	;TEMP AC

GLOB < 
TABL ←← 7	;NEEDED BY LIST CELL GETTER
>;GLOB
NOGLOB <
TABL ←← USER	;NEEDED BY LIST CELL GETTER
>;NOGLOB
FP ←← 6		;NEEDED BY LIST CELL GETTER

; (LOCAL VARIABLES FOR SCHEDULER)
MAXPRI ←← 0	;MAXIMUM PRIORITY
MINPRI ←← NPRIS-1

;REASONS FOR SUSPENSION
PSPF←←0		;ONLY P, SP, F NEED BE RESTORED
SPNDR←←1	;SUSPENDED (FROM READY) BY SUSPEND
JOINR←←2	;SUSPENDED BECAUSE OF A JOIN
WAITNG←←3	;WAITING ON AN EVENT OR SO

; ( CONSTANT DATA USED BY SPROUTER)

; FIELD DEFNS FOR OPTIONS WORD (SEE ALSO POINT S BELOW)

STSMSK←	77 ⊗ =8	;MASK FOR P STACK SIZE FIELD
SSSMSK←	17 ⊗ =14;MASK FOR SP STACK SIZE FIELD OF OPTIONS WORD
PRIMSK←	17 ⊗ 4	;MASK FOR PRIORITY FIELD
QNTMSK←← 17	;MASK FOR QUANTUM
RUNME←←	1	;RUN THE SPROUTING PROCESS
SPNDME←←2	;SUSPEND THE SPROUTING PROCESS
SPNDNP←←10	;SUSPEND THE NEW PROCESS

;MORE FIELD DEFS & BIT VALUES
TERM  ←← 1	;BIT (LH) IN DATUM OF TERMINATED PROCESS ITEM

;DEFAULT VALUES --INITIALLY SET BY MAINPR

STPSZ←	40	;DEFAULT P- STACK SIZE (MINUS THE PROCESS TABLE AREA)
STSPST ←20	;DEFAULT SP STACK SIZE
STDQNT ←← 4	;DEFAULT STD QUANTUM IS 4
STDPRI	←←7	;DEFAULT PRIORITY

;OPTIONS FOR RESUME
MSTMSK←←14	;MASK FOR MY NEW STATUS FIELD
NOTNOW←←1	;SET IF RESUMED PROCESS IS MERELY TO GO READY

;CONSTANTS USED BY RESUME
MSTBYT:	POINT	2,OPTS,33 ;MY NEW STATUS

; (CONSTANTS USED BY SPROUTER)
SSSBYT:	POINT	4,OPTS,21	;STRING STACK FIELD (MOD 32)
STSBYT:	POINT	6,OPTS,27	;P - STACK FIELD (MOD 32)
PRIBYT:	POINT	4,OPTS,31	;PRIORITY FIELD
QNTBYT:	POINT	4,OPTS,17	;LOG2 (QUANTUM)


; MACROS USED TO GET LIST CELLS
DEFINE NCELL(AC) <
	MOVE	FP,FP1(TABL)	;USE WHERE SURE THE LIST SPACE IS INITIALIZED
	HRRI	AC,(FP)
	SKIPN	FP,(FP)
	PUSHJ	P,FP1DON
	HRRM	FP,FP1(TABL)
>

DEFINE NNCELL(AC) <
	SKIPN	FP,FP1(TABL)	;USE WHERE LIST SPACE MAY NEED INITIALIZATION
	PUSHJ	P,FP1DON
	HRRI	AC,(FP)
	SKIPN	FP,(FP)
	PUSHJ	P,FP1DON
	HRRM	FP,FP1(TABL)
>

DEFINE NNCLL2(AC) <
	SKIPN	FP,FP2(TABL)	;USE WHERE LIST SPACE MAY NEED INITIALIZATION
	PUSHJ	P,FP2DON
	HRRI	AC,(FP)
	SKIPN	FP,(FP)
	PUSHJ	P,FP2DON
	HRRM	FP,FP2(TABL)
>

NOTENX <
OPDEF INTENS [CALLI 400030]
OPDEF IWAIT [CALLI 400040]
>;NOTENX

;PROCESS VARIABLE NUMBERS

DEFINE PVAR (V,ATTRIB),
	<↑V ←← NPVARS
	NPVARS←← NPVARS+1
IFE ALWAYS,<
	IFDIF <ATTRIB>,<> < ATTRIB V >
>;IFE ALWAYS
	>


NPVARS←← 0

	PVAR	DYNL	;DYNAMIC LINK
	PVAR	STATL	;STATIC LINK
	PVAR	ISP	;REST OF MSCP
	PVAR	AC0	;AC SAVE AREA
	PVAR	AC1
	PVAR	AC2
	PVAR	AC3
	PVAR	AC4
	PVAR	AC5
	PVAR	AC6
	PVAR	AC7
	PVAR	AC10
	PVAR	AC11
	PVAR	AC12
	PVAR	AC13
	PVAR	AC14
	PVAR	AC15
	PVAR	AC16
	PVAR	AC17
↑ACF ←← AC12
↑ACP ←← AC17
↑ACSP ←← AC16
	PVAR	PCW	;PC WORD
	PVAR	QUANTM	;TIME QUANTUM
	PVAR	PRIOR	;PRIORITY
	PVAR	PRCITM	;PROCESS ITEM OF THIS PROCESS
	PVAR	KLOWNR	;THE OWNER OF MY KILL LIST
	PVAR 	STATUS	;-1 = RUNNING, 0 = SUSPEND, 1 = READY, 2 = TERMINATED
	PVAR	DADDY,INTERNAL	;PROCESS ITEM OF SPROUTING PROCESS
	PVAR	CAUSRA	;RETN ADDRESS FROM CAUSE
;THE FOLLOWING ARE ZEROED OUT ON CREATION
ZFIRST←←NPVARS
	PVAR	CURSCB,INTERNAL	;CURRENT SEARCH CONTROL BLOCK
	PVAR	REASON	;HOW GOT UNSCHEDULED (0 MEANS ONLY NEED ACS F,SP,P)
	PVAR	PLISTE	;PRIORITY LIST ENTRY
	PVAR	RSMR	;THE GUY WHO RESUMED ME (%AG% ** INIT TO DADDY ** )
	PVAR	JOINCT	;HOW MANY PROCESSES NEED TO JOIN THIS ONE
	PVAR	JOINS	;WHO IS WAITING TO FOR ME TO JOIN (A SET OF ITEMS)
	PVAR	WAITES	;LIST OF ALL EVENT TYPES ON WHICH I AM WAITING
	PVAR	INTRGC	;THE CONTROL WORD FOR MY CURENT INTERROGATION
	PVAR	CAUSES	;COUNT OF CAUSES PENDING
	PVAR	CAUSEQ	;QUEUE OF CAUSES TO BE MADE
ZLAST←←NPVARS-1

↑NPVARS ← NPVARS
↑STKBAS ← NPVARS	;STACK BASE SIZE (= #PROCESS VARS FOR NOW)
COMMENT ⊗event variables⊗

NEVARS←←0

DEFINE EVAR(V) ,
	<↑↑V←←NEVARS
	NEVARS←←NEVARS+1
	>

	EVAR	NOTCLS		;LIST OF CURRENT NOTICES
	EVAR	WAITLS		;LIST OF CURRENTLY WAITING PROCESSES
	EVAR	CAUSEP		;USER SPEC CAUSE PROC
	EVAR	INTRGP		;USER SPEC INTERROGATE PROC
	EVAR	USER1		;AVAIL TO USER
	EVAR	USER2		;AVAIL TO USERR

;OPTIONS BITS FOR CAUSE
DNTSAV ←← 1
TELLAL ←← 2
SCHDIT ←← 4

;OPTIONS BITS FOR INTERROGATE
RETAIN ←← 1
WAIT   ←← 2
SAYWCH ←← 10
MULTIN ←← 200000
NOJOY  ←← 400000

COMMENT ⊗procedure descriptors & null process skeleton⊗

FLXXX←←0
UP <
FLXXX←←%FIRLOC-400000
>;UP


DEFINE PUTINLOC(LCN,V),< 
UP <
	SVPCXX ←← .
	DEPHASE
>;UP
	RELOC LCN+FLXXX
	V
	RELOC
UP <
	PHASE SVPCXX
>;UP
>

;MAKE A PD FOR THE SPROUTER
↑SPRPDA:BLOCK PD.XXX+1

DEFINE FPDE(IX,V),<PUTINLOC (SPRPDA+IX,V)>

	FPDE	(PD.,SPROUT)
	FPDE	(PD.DSW,STKBAS)
	FPDE	(PD.PDA,<<XWD SPRPDA,0>>)
	FPDE	(PD.LLW,<SPRPDA+PD.XXX>)
	FPDE	(PD.DLW,<SPRPDA+PD.XXX>)


IFN 0,<

;NULL PROCESS
NULPDA:	NULPRO			;PD OF NUL PROC
↑NULPRC: %NULPR			;NULL PROCESS

%NULPR:	BLOCK STKBAS+=32	;NULL PROCESS AREA

DEFINE NPE (IX,V), <PUTINLOC (%NULPR+IX,V)>

	NPE	(STATL,<<XWD SPRPDA,0>>)
	NPE	(ACF,STKBAS+%NULPR+1)
	NPE	(ACP,<<TPDL: XWD - =29,%NULPR+STKBAS+3>>)
	NPE	(STKBAS+1,%NULPR+DYNL)
	NPE	(STKBAS+2,<<XWD NULPDA,0>>)



↑NULPRO:
	ERR	<I SHOULD NEVER RUN>
>;IFN 0







DSCR SPROUT -- THE PROCESS SPROUTER
CAL 	PUSHJ
PARM	-1(P)	;KILL LIST
	-2(P)	;OPTIONS WORD
	-3(P)	;PDA OF SPROUTED PROCESS
	-4(P)	; PROCEDURE PARAMS
	:
	-?(P)	;LAST OF PROCEDURRE PARAMS
	-?-1(P)	;PROCESS ITEM
DES 
	This procedure acts as the "process" procedure.
Roughly, it does the following:

1. Saves the return address in PCW(RUNNER)
2. gets stack space
3. puts self on appropriate kill list & priority list
4. copies over the procedure parameters.
5. sets status of new & SPROUTing process
	&(eventually) calls the appropriate procedure.
6. when the procedure returns, SPROUT then kills the process.

⊗
HERE (SPROUT)
	MOVE	USER,RUNNER	;
	POP	P,PCW(USER)	;RETN ADDRESS
	POP	P,KL		;PICK UP KILLL LIST
	POP	P,OPTS		;OPTIONS
	POP	P,PDA		;FIND OUT WHO
;;%AA% -- 1 OF 1  DEFAULTS, ALSO THE POP P,PDA USED TO BE LATER
	CAIN 	PDA,APPL$Y	;SPROUT APPLY IS A ROYAL PAIN
;;#OU# A TYPO RHT
	SKIPA	TMP,-1(P)	;REAL PDA FOR SPROUT APPLY
	MOVE	TMP,PDA		;
	HRRZ	A,PD.PDB(TMP)	;THE DEFAULTS
	JUMPE	A,SALCS		;NO DEFAULTS -- SPROUT ALLOCATIONS NOW
	LSH	A,4		;INTO POSITION
	TRNE	OPTS,STSMSK	;P STACK
	TRZ	A,STSMSK
	TRNE	OPTS,SSSMSK	;SP STACK
	TRZ	A,SSSMSK
	TRNE	OPTS,PRIMSK	;PRIORITY
	TRZ	A,PRIMSK
	TLNE	OPTS,QNTMSK	;QUANTUM
	TLZ	A,QNTMSK	;
	IOR	OPTS,A		;OR IN THE BITS FOR DEFAULTS
SALCS:
;;%AA%

	TRNE	OPTS,SSSMSK	;SPECIFIED SP STACK SIZE ?
	JRST	[ LDB C,SSSBYT	;YES, GET IT
		LSH   C,5	;TIMES 32
		JRST  .+2 ]
	MOVE	C,DEFSSS	;STANDARD SIZE
	PUSHJ	P,CORGET	;GET SPACE
	ERR	<NOT ENOUGH CORE -- SPROUT >
	MOVN	C,C		;MAKE PDP
	HRLZI	NSP,-1(C)	
	HRRI	NSP,-1(B)
	TRNE	OPTS,STSMSK	;P - STACK
	JRST	[ LDB C,STSBYT	;YES, GET IT
		LSH	C,5	;TIMES 32
		JRST	.+2]
	MOVE	C,DEFPSS	;STANDARD AMOUNT TO GET
	ADDI	C,STKBAS	;SPACE FOR BASE
	PUSHJ	P,CORGET	;GET ROOM
	ERR	<NOT ENOUGH CORE -- SPROUT >
	MOVE	PB,B		;PROCESS BASE
	MOVN	C,C
	HRLZI	NP,STKBAS(C)	;MAKE PDP
	HRRI	NP,STKBAS(PB)

;ZERO OUT SOME OF THE PROCESS VARS
	HRLZI	A,ZFIRST(PB)	;
	HRRI	A,ZFIRST+1(PB)
	SETZM	ZFIRST(PB)
	BLT	A,ZLAST(PB)

;REMEMBER DADDY
	MOVE	USER,RUNNER
	MOVE	A,PRCITM(USER)
	MOVEM	A,DADDY(PB)
;;%AG% ! REMEMBER SPROUTER AS THE FIRST CALLER. RHT
	MOVEM	A,RSMR(PB)	;SO CALLER(MYPROC) STARTS OUT AS DADDY

;BUILD MSCP, ETC.

	SETZM	DYNL(PB)	;NULL DYN LINK
	CAIN	PDA,APPL$Y	;IS IT A SPROUT APPLY?
	JRST	[		;YES
UP <
		MOVE	PDA,(PDA) ;SINCE APPL$Y IS HERED
>;UP
		POP	P,TMP	;ARG LIST
		POP	P,A	;PDA OF TARGET
		PUSH	NP,A	;PUT ON CALL STACK
		PUSH	NP,TMP	;PUT ON CALL STACK
;;#OO# !(1 OF 2) A TYPO
		HRLZI	TMP,SPRPDA
		HLRZ	C,PD.DLW(A) ;LOOK FOR RIGHT LINK
;;#OT# ! RHT DONT LOOK IF THE FELLOW SUPPLIES AN ENVIRONMENT
		TLNN	A,-1	;ENVIRON SUPPLIED??
		CAIG	C,1	;GLOBAL??
		JRST	SSLON	;YES
		HRRZ	A,PD.PPD(A);
		SKIPA	TMP,RF
	SSLFLP:	HLRZ	TMP,C
		MOVS	C,1(TMP)
		CAIE	A,(C)
		JRST	SSLFLP
;;#OO# ! (2 OF 2) NEED TO SAY A SPROUT
		HRLI	TMP,SPRPDA
	SSLON:	MOVEM	TMP,STATL(PB)
		MOVEM	NSP,ISP(PB)
		JRST	APSON	]
	HLRZ	A,PD.DLW(PDA)	;DISPLAY LEVEL
	HRLZI	TMP,SPRPDA	;IN CASE OUTER LEVEL
	CAIG	A,1		;OUTER BLOCK PROC?
	JRST	SLON		;YES -- NO LOOP
	HRRZ	A,PD.PPD(PDA)	;THE LEXICAL PARENT
	SKIPA	TMP,RF		;DYNL
SLFLP:	HLRZ	TMP,C		;BACK A STATL
	MOVS	C,1(TMP)	;SL,,PDA
	CAIE	A,(C)		;SAME AS DADDY?
	JRST	SLFLP		;NO
	HRLI	TMP,SPRPDA	;SPRPDA,,STATL
SLON:	MOVEM	TMP,STATL(PB)	;STATIC LINK WORD
	MOVEM	NSP,ISP(PB)	;SP WORD

;COPY PROC PARAMS

	HLRZ	TMP,PD.NPW(PDA)	;#STRING PARAMS*2
	JUMPE	TMP,STPSON	;HAVE ANY ?
	HRL	TMP,TMP		;YES, DO A BLT
	HRRZI	A,1(NSP)	;DEST
	ADD	NSP,TMP		;BUMP OLD STACK
	SUB	SP,TMP		;DECREMENT OLD STACK
	HRLI	A,1(SP)		;SOURCE
	BLT	A,(NSP)		;COPY THEM
STPSON:	HRRZ	TMP,PD.NPW(PDA)	;# ARITH PARMS +1
	SOJLE	TMP,APSON	;ANY TO BLT ?
	HRL	TMP,TMP		;MAKE XWD
	HRRZI	A,1(NP)		;DEST
	ADD	NP,TMP
	SUB	P,TMP
	HRLI	A,1(P)
	BLT	A,(NP)		;DO IT
APSON:


;NOW  SET UP NEW PROCESS'S STATUS, QUANTUM, & PRIORITY

	SETOM	STATUS(PB)		;ASSUME RUNNING
	TRNE	OPTS,SPNDNP		;UNLESS SUSPEND
	SETZM	STATUS(PB)		;0 MEANS SUSPENDED
	MOVE	TMP,DEFQNT		;STANDARD QUANTUM
	TLNN	OPTS,QNTMSK		;GET LOG2 QUANTUM
	JRST	SVQNT			;NO NEED
	LDB	A,QNTBYT
	MOVEI	TMP,1
	LSH	TMP,(A)
SVQNT:	MOVEM	TMP,QUANTM(PB)
	MOVE 	A,DEFPRI		;ASSUME STD PRIORITY
	TRNE	OPTS,PRIMSK		;SAID OTHERWISE?
	LDB	A,PRIBYT
	PUSHJ	P,SETPRI		;GO SET PRIORITY

;SET UP PROCESS ITEM

	POP	P,C			;PICK UP ITEM #
	MOVEM	C,PRCITM(PB)		;REMEMBER IT
	MOVEI	A,PRCTYP		;SAY IS OF TYPE PROCESS

COMMENT **** MAY WANT TO WORRY HERE ABOUT GLOBAL ITEMS **** ;

	MOVE	TABL,GOGTAB
	DPB	A,INFOTAB(TABL)		;SAY IS A PROCESS
	HRRZM	PB,@DATAB(TABL)		;SET DATUM VALUE

;KILL SET STUFF
	MOVE	B,C			;ITEM NUMBER
	MOVEM	KL,KLOWNR(PB)		;REMEMBER KILL LIST OWNER
	JUMPE	KL,NEWSTT		;ONLY PUT ON KILL SET IF HAVE ONE
	PUSH	P,TABL			;NEED TO SAVE THESE
	PUSH	P,FP			;
	PUSHJ	P,INSRTS		;GO PUT ITEM IN KILL SET
	POP	P,FP
	POP	P,TABL

;NOW DECIDE WHAT TO DO WITH SPROUTING PROCESS & DO THE RIGHT THING

NEWSTT:	MOVE 	USER,RUNNER		;HOPE IT IS STILL HIM
	TRNE	OPTS,RUNME		; DOES SPROUTING PROCESS WANT TO RUN?
	JRST	RNSPRR			;YES
	MOVEM	P,ACP(USER)		;IF HERE, THEN WANT TO RUN NEW GUY
	MOVEM	SP,ACSP(USER)		;SAVE THE NECESSARY ACS
	MOVEM	RF,ACF(USER)		;
	MOVNS	STATUS(USER)		;RUNNING BECOMES READY
	TRNE	OPTS,SPNDME		;IF I WANTED SUSPENSION
	SETZM	STATUS(USER)		;DO IT
	SKIPL	STATUS(PB)		;DOES SPROUTED PROCESS WANT TO RUN
	JRST	NORFR			;NO
	MOVE	USER,GOGTAB
	MOVE	A,QUANTM(PB)
	MOVEM	A,TIMER(USER)
	MOVE	P,NP			;
	MOVE	SP,NSP			;GET READY
	MOVEI	RF,DYNL(PB)		;
	MOVEM	PB,RUNNER
CALLIT:	PUSHJ	P,@PD.(PDA)		;CALL THE SO AND SO

;HERE IS WHERE WE COME ON PROCEDURE EXIT
CALRET:	MOVE	PB,RUNNER		;I HOPE ITS ME
	PUSHJ	P,KACTS			;DO EVERYTHING BUT SPACE FREEING
	MOVE	P,ALLPDP		;USE THIS PDL FOR KILLING CORE

;NOW KILL CORE FOR SP STACK

	HRRZ	B,ISP(PB)
	ADDI	B,1
	PUSHJ	P,CORREL

;NOW KILL CORE FOR P-STACK

	HRRZI	B,(PB)
	PUSHJ	P,CORREL

;NOW ALL TRACES ARE GONE (I HOPE)

	JRST	FOTR			;GO FIND SOMETHING TO DO

;PROCEDURE THAT PERFORMS ALL KILL ACTIONS EXCEPT STACK RELEASING
;EXPECTS PB TO POINT AT THE CONDEMNED PROCESS
;USES A,B,C,KL

KACTS:	HRRZ	C,PRCITM(PB)
	MOVE	B,C			;
	MOVE	TABL,GOGTAB		;
	TLO	PB,TERM			;SET TERM BIT
	MOVEM	PB,@DATAB(TABL)		;TERMINATED
	SKIPE	KL,KLOWNR(PB)		;IF HAVE A KILL SET
	PUSHJ	P,DELTSE		;DELETE FROM SET

;NOW  CHECK TO SEE IF WE WERE ON ANY JOIN LISTS

	SKIPN	A,JOINS(PB)
	JRST	REMPRI
	MOVE	KL,GOGTAB	;
KACT.1:	HLRZ	C,(A)		;THE ITEM
	MOVE	B,@DATAB(TABL)	;GET ADDRESS OF THE DATUM
	TLNE	B,TERM		;DEAD ALREADY??
	JRST	KACT.2		;YES
	SOSLE	JOINCT(B)	;READY TO ROLL ??
	JRST	KACT.2		;NO
	SKIPN	STATUS(B)	;CURRENT STATUS
	AOS	STATUS(B)	;READY
KACT.2:	HRRZ	B,(A)
	HRR	C,FP1(KL)	;RELEASE LIST CELL
	HRRM	C,(A)	
	HRRM	A,FP1(KL)	;NEW FREE LIST
	JUMPE	B,REMPRI	;END OF LIST
	MOVE	A,B		;
	JRST 	KACT.1



;NOW TAKE OFF PRIORITY LIST AND RETURN
;NOTE -- THE CODE FROM HERE TO THE POPJ IS ITSELF A PROCEDURE USED
;ELSEWHERE TO REMOVE PROCESS (PB) FROM ITS PRIORITY LIST
;SIDE EFFECTS -- USES A,B,C 

REMPRI:	MOVE	A,PRIOR(PB)
	ADD	A,GOGTAB
	HRRZ	B,PLISTE(PB)
	HLRZ	C,PLISTE(PB)
	JUMPN	C,.+3
	HRRM	B,PRILIS(A)		;HEAD OF LIST
	JRST	.+2
	HRRM	B,PLISTE(C)		;NEXT(C)←B
	JUMPN	B,.+3
	HRLM	C,PRILIS(A)		;NEW TAIL
	POPJ	P,
	HRLM	C,PLISTE(B)		;PREV(B)←C
	POPJ	P,

;PROCEDURE TO PUT PROCESS (PB) ON PRIORITY LIST A
;SIDE EFFECT -- MODIFIES B
SETPRI:	MOVEM	A,PRIOR(PB)		;REMEMBER MY PRIORITY
	ADD	A,GOGTAB
	SKIPE	B,PRILIS(A)		;PRIORITY LIST OWNER
	HRLM	PB,PLISTE(B)		;LINK BACK
	HRRZM	B,PLISTE(PB)		;LIINK DOWM
	HRRM	PB,PRILIS(A)		;NEW RHS FOR OWNER IS PTR TO  ME
	TLNN	B,-1			;WAS THE LIST EMPTY ??
	HRLM	PB,PRILIS(A)		;YES -- THIS IS THE TAIL TOO
CPOPJ:	POPJ	P,


;HERE IF DONT WANT TO RUN NEW GUY RIGHT AWAY
NORFR:	TROA	B,1			;FLAG
RNSPRR:	MOVEI	B,0
	MOVNS	STATUS(PB)		;IF NEW IS "RUNNING", THEN "READY"
	PUSH	NP,[CALRET]		;
	MOVEM	NP,ACP(PB)		;SET UP NEC. SAVES
	MOVEM	NSP,ACSP(PB)
	MOVEI	A,DYNL(PB)		
	MOVEM	A,ACF(PB)
	MOVE	A,PD.(PDA)		;WHERE HE STARTS
	MOVEM	A,PCW(PB)
	CAIN	B,			;SPROUTER RUNS??
	JRST	@PCW(USER)		;YES -- 
	JRST	FOTR			;NO -- FIND SOMEONE TO RUN

COMMENT ⊗routines for inserting & deleting set elements⊗

;expects item no in B , (KL) = the owner
;mangles A,B,C,FP,TABL

INSRTS:	MOVE	TABL,GOGTAB
	SKIPN	A,(KL)		;GET OWNER
	JRST	NEWINS		;IT WAS NULL BEFORE
	MOVE	C,(A)		;POINT AT FIRST
ISCH:	MOVS	C,(C)		;CONTENTS (SWAPPED) OF THIS
	CAILE	B,(C)		;ELIGIBLE
	JRST	NX1		;MUST GO FURTHER
	CAIL	B,(C)		;THERE ALREADY?
	POPJ	P,		;YES
NI:	HRL	B,(A)		;POINTER AT THIS
	NCELL	(C)		;GET A CELL FOR IT
	MOVSM	B,(C)		;SAVE CONTENTS OF CELL
	HRRM	C,(A)		;LINK TO NEW
	HRLZI	A,1
	ADDB	A,(KL)		;UPDATE COUNT -- POINT AT LAST,,FIRST
	TLNN	B,-1		;AT THE END???
	HRLM	C,(A)		;YES
	POPJ	P,
NX1:	HRRZ	A,(A)
	TLNN	C,-1		;END OF LIST
	JRST	NI		;YES -- PUT AT END
	MOVSS	C
	JRST	ISCH		;GO LOOK SOME MORE
NEWINS:	NNCELL	(A)
	SETZM	(A)
	HRRZM	A,(KL)		;IT USED TO BE NULL
	JRST	NI

;ROUTINES FOR ADDING TO LISTS
;EXPECT ITEM NO IN B, KL= ADRS OF OWNER
;MANGLE A,B,C,FP,TABL
;;#QK# RHT ! SET UP OF TABL NEEDED
IHEDLS:	MOVE	TABL,GOGTAB
	SKIPN	A,(KL)		;INSERT AT HEAD
	JRST	NEWINS
	JRST	NI		
ITAILS:	
;;#QK# ! SET UP TABL (2 OF 2)
	MOVE	TABL,GOGTAB	;
	SKIPN	A,(KL)		;INSERT AT TAIL
	JRST	NEWINS
	MOVS	A,(A)
	JRST	NI


;ROUTINE TO DELETE SET OR LIST ELEMENTS
;B = ITEM NO, (KL) IS THE OWNER
;MANGLES A,B,C,TABL

DELTLE:
DELTSE:	SKIPN	A,(KL)		;GET SET DESCRIPTOR
	POPJ	P,		;NULL ALREADY
	MOVE	C,(A)
DSCH:	MOVE	C,(C)
	TLC	C,(B)
	TLNN	C,-1		;WAS IT THIS ONE???
	JRST	DIT		;YES
	TRNN	C,-1		;END OF SEARCH
	POPJ	P,		;YES
	MOVE	A,(A)		;LINK
	JRST	DSCH		;GO LOOK
DIT:	MOVE	TABL,GOGTAB
	MOVE	B,(A)		;B PTR TO THIS CELL
	HRRM	C,(A)		;LINK PREV TO NEXT
	HRL	C,FP1(TABL)	;OLD FREE LIST
	HLRM	C,(B)		;LINK CELL
	HRRM	B,FP1(TABL)	;
	HRLZI	B,-1		;ADJUST DESCRIPTOR
	ADDB	B,(KL)
	TLNE	B,-1		;LIST NULL NOW???
	JRST	CKEND		;NO
	SETZM	(KL)		;YES
	MOVSS	(B)		;LAST,,FIRST CELL 
				;NOW IS 0,,PTR TO CELL JUST FREED UP
	HRRM	B,FP1(TABL)	;NEW FREE LIST
	POPJ	P,
CKEND:	TRNN	C,-1		;WAS THIS THE END
	HRLM	A,(B)		;YES
	POPJ	P,


;ROUTINE TO DELETE FIRST ELT OF A LIST
;PUTS ITEM # INTO A
;EXPECTS (KL) = THE OWNER
;MODIFIES A,B,C,TABL

REMCAR:	SKIPN	A,(KL)
	POPJ	P,		;IF WAS NULL RETURN A 0
	MOVE	C,(A)
	MOVE	C,(C)		;FIRST REAL LIST CELL
	HLRZ	B,C		;FIRST ONE
	PUSH	P,B		;SAVE IT
	PUSHJ	P,DIT
	POP	P,A		;VALUE
	POPJ	P,





;USER REQUESTED SCHEDULING


HERE(URSCHD)
	MOVE	PB,RUNNER
	SKIPL	STATUS(PB)		;
	JRST 	FOTR			;GO FIND ONE TO RUN
	MOVNS	STATUS(PB)		;SET TO READY
SPSRN1:	SETZM	REASON(PB)		;OTHER ACS NOT SAVED
SPSRN2:	POP	P,PCW(PB)		;DITTO -- BUT LEAVE REASON INTACT
					;THESE TWO LABELS ARE USED
					;BY SUSPEND, JOIN & THE LIKE
	MOVEM	P,ACP(PB)
	MOVEM	SP,ACSP(PB)
	MOVEM	RF,ACF(PB)		
FOTR:	HRRZ	B,GOGTAB
	TLO	B,-NPRIS
	MOVEI	A,1			;READY
SCHLIS:	SKIPN	PB,PRILIS(B)		;SEARCH DOWN THIS LIST
	JRST	NXLIS			;LIST IS EMPTY
TRYTHS:	CAMN	A,STATUS(PB)		;IS THIS READY
	JRST	SCDTHS			;YES -- DO HIM
	HRRZ	PB,PLISTE(PB)		;LINK DOWN LIST
	JUMPN	PB,TRYTHS		;IF ANY LEFT AT THIS LEVEL,TRY
NXLIS:	AOBJN	B,SCHLIS		;SEARCH LIST
	
IFE APRISW <
;;#NA#  RACE CONDITION ON WHEN INTERRUPT HAPPENS
	IMSKCL	1,[-1]			;MASK OFF ALL INTERRUPTS
	SKIPE	INTRPT			; A RECENT INTERRUPT
	JRST	[INGOSC: SETZM INTRPT	;GO TRY AGAIN TO SCCHEDULE
			IMSKST 1,[-1]
			JRST	FOTR ]
	INTENS	B,			;GET INTERRUPT ENABLING
	TLNN	B,775204		;IS HE ENABLED FOR SOMETHING
					;THAT CAN STILL HAPPEN
	ERR <NO ONE TO RUN>,1,INGOSC	;NO
	IMSTW	[-1			;WAIT FOR AN INTERRUPT
		1]
	SETZM	INTRPT			;ZERO THE FLAG
;;#NA# -- EVENTUALLY FIX THIS CROCK
>;IFE APRISW
IFN APRISW <
	SKIPN	INTRPT
	ERR <NO ONE TO RUN>,1
	SETZM	INTRPT
>;IFN APRISW
	JRST	FOTR			;FIND SOMEONE TO RUN

SCDTHS:	
;CIRCLE THE QUEUE
	SKIPN	A,PLISTE(PB)		;ONLY ONE ON THE LIST?
	JRST	RDYTHS			;YES
	TRNN	A,-1			;ALREADY AT END?
	JRST	RDYTHS			;YES
	HLLM	A,PLISTE(A)		;PREV(NEXT(ME))←PREV(ME)
	MOVS	C,A			;NEXT(ME),,PREV(ME)
	TRNE	C,-1			;ANY PREV?
	HLRM	C,PLISTE(C)		;YES -- NEXT(PREV(ME))←NEXT(ME)
	TLNE	A,-1			;WAS I FIRST?
	HRR	A,PRILIS(B)		;NO -- FIRST WILL STAY FIRST
	HRL	A,PB			;NEW OWNER -- ME,,NEW FIRST
	EXCH	A,PRILIS(B)		;GET OLD LAST,,FIRST
	HLLZM	A,PLISTE(PB)		;MY NEW ENTRY IS OLD LAST,,0
	MOVS	A,A			;    XXX,,OLD LAST
	HRRM	PB,PLISTE(A)		;POINT AT ME


RDYTHS:	SETOM 	STATUS(PB)		;RUNNING
	HRRM 	PB,RUNNER		;SAY SO
	MOVE	USER,GOGTAB
	MOVE	A,QUANTM(PB)
	MOVEM	A,TIMER(USER)
	SKIPE	A,REASON(PB)
	JRST	@SPCASE(A)		;SOME SPECIAL CASE
RPSPF:	MOVE	P,ACP(PB)		;GET THE NEEDED REGISTERS
	MOVE	SP,ACSP(PB)
	MOVE	RF,ACF(PB)
	JRST	@PCW(PB)		;GO START RUNNING THE SO AND SO


SPCASE:	RPSPF				;0 THEN RESTORE P, SP, F
	RSTACS				;1 THEN RESTORE ALL ACS
	RPSPF				;2 THEN FROM JOINER
	RST1				;3 THEN FROM INTERROGATE

RSTACS:	MOVE	P,ACP(PB)		;PUT THE RETURN ADDRESS ON THE STACK
	PUSH	P,PCW(PB)
	MOVEM	P,ACP(PB)
	HRLZI	P,AC0(PB)
	BLT	P,P			;RESTORE THE OLD ACS
	POPJ	P,			;GO RUN


RST1:	MOVE	A,AC1(PB)		;RESTORE REG 1 , SP,P,F
	JRST	RPSPF

HERE(RESUME)
	MOVE	USER,RUNNER	;TAKE CARE OF RET ADDRS
	POP	P,PCW(USER)
	POP	P,OPTS		;OPTIONS
	POP	P,A		;RETURN VALUE
	POP	P,C		;WHO
	MOVE	TEMP,GOGTAB	;
	LDB	B,INFOTAB(TEMP)	;TEST THE TYPE
	CAIE	B,PRCTYP	;IS THE TYPE A PROCESS
	ERR	<ATTEMPT TO RESUME SOMETHING NOT A PROCESS>
	MOVE	PB,@DATAB(TEMP)	;GET THE DATUM
	TLNE	PB,TERM		;WAS IT TERMINATED?
	ERR	<ATTEMPT TO RESUME A TERMINATED PROCESS>
	MOVE	B,PRCITM(USER)	;MY NAME
	MOVEM	B,RSMR(PB)	;REMEMBER CALLER
	SKIPE	STATUS(PB)	;HIS STATUS BETTER BE 0
	ERR	<ATTEMPT TO RESUME NON-SUSPENDED PROCESS>,1,<@PCW(USER)>
	JUMPN	OPTS,NS.RSM	;NONSTANDARD IF JUMP
	SETZM	STATUS(USER)
RSM.H:	SETOM	STATUS(PB)
	MOVEM	P,ACP(USER)	;SAVE NEEDFUL REGISTERS
	MOVEM	RF,ACF(USER)
	MOVEM	SP,ACSP(USER)
	SETZM	REASON(USER)	;ONTL P, SP, F IMPORTANT
	MOVEM	PB,RUNNER	;
	MOVE	C,REASON(PB)	;
	JRST	@SPCASE(C)	;GO FIRE HIM UP


NS.RSM:	TRNN	OPTS,MSTMSK	;FUNNYNESS IN MY NEW STATUS?
	JRST	RSM.4		;NO -- IT MUST BE NOTNOW
	LDB	D,MSTBYT	;GET INDEX
	JRST	@[ RSM.1	;I GO READY
		  RSM.3		;I DIE
		  RSM.4		;I WANT TO KEEP RUNNING
		]-1(D)		;SELECT

RSM.1:	TRNN	OPTS,NOTNOW	;HE RUNS?
	JRST	RSM.2		;YES
	AOS	STATUS(PB)	;MAKE HIM READY
	MOVE	B,REASON(PB)	;WERE ALL REGISTERS SAVED
	CAIN	B,1		;
	JRST	RSM.01		;YES
	MOVEM	A,AC1(PB)	;
	MOVEI	A,3
	MOVEM	A,REASON(PB)	;A IS IMPORTANT
RSM.01:	PUSH	P,PCW(USER)	;RET AD
	JRST	URSCHD		;RESCHEDULE



RSM.2:	MOVNS	STATUS(USER)	;
	JRST	RSM.H		;GO GET HIM GOING



RSM.3:	MOVE	B,REASON(PB)	;
	CAIN	B,1		;ALL ACS SAVED?
	JRST	RSM.3X		;YES
	MOVEM	A,AC1(PB)	;SAVE A
	MOVEI	A,3		;
	MOVEM	A,REASON(PB)	;
RSM.3X:	TRNE	OPTS,NOTNOW	;HE RUNS?
	JRST	RSM.03		;YES
	AOS	STATUS(PB)	;NO - I CAN COMMIT SUICIDE
	MOVE	PB,USER		;
	JRST	TERMPB		; I DIE
RSM.03:	MOVE	B,ACP(PB)	;
	MOVEI	C,RSM.T		;
	EXCH	C,PCW(PB)	;FIRST HE WILL KILL ME
	PUSH 	B,C		;
	PUSH	B,PB		;
	MOVEM	B,ACP(PB)	;THE TERMPB POPJ WILL CONTINUE HIM
	JRST	RSM.H		;GO FIRE THE DEAR BOY UP

RSM.4:	AOS	STATUS(PB)	;GET HIM READY
	MOVE	B,REASON(PB)	;SHOULD WE SAVE 1
	CAIE	B,1		;
	JRST	@PCW(USER)	;I GO ON MY WAY
	MOVEM	A,AC1(PB)	;SAVE IT
	MOVEI	A,3		;
	MOVEM	A,REASON(PB)	;
;;#LB#! 1-15-73 DCS WAS @PCW(PB), THAT'S WRONG ("TYPO")
	JRST	@PCW(USER)	;

RSM.T:	MOVE	PB,(P)		;
	PUSHJ	P,TERMPB	;
	MOVE	PB,1(P)		;TERMPB BACKED UP THE STACK
	POP	P,PCW(PB)	;RET AD
	MOVE	C,REASON(PB)	;
	JRST	@SPCASE(C)	;GO DO RIGHT THING ABOUT ACS

COMMENT ⊗SUSPEND and TERMINATE runtime routines⊗
HERE(SUSPEND)
	MOVE	C,-1(P)		;THE ITEM
	POP	P,-1(P)		;BACK UP RETN ADDR
	MOVE	TABL,GOGTAB	;
	LDB	B,INFOTAB(TABL)
	CAIE	B,PRCTYP	;BE SURE A PROCESS ITEM
	ERR	<ATTEMPT TO SUSPEND A NON PROCESS ITEM>
	MOVE	PB,@DATAB(TABL)
        TLNE	PB,TERM		;IF TERMINATED , 
	ERR	<SUSPENDING A TERMINATED ITEM>
	CAME	PB,RUNNER	;IS IT THE RUNNER
	JRST	OTHGUY		;NO
	SETZM	STATUS(PB)
	JRST	SPSRN1		;GO RESCHEDULE
OTHGUY:	MOVEI	A,SPNDR		;HE MUST HAVE BEEN READY
	SKIPE	STATUS(PB)	;IF HE WASNT SUSPENDED
	MOVEM	A,REASON(PB)	;THE REGISTERS MUST BE RESTORED
	SETZM	STATUS(PB)	;BE SURE
TENX <
IFDEF ITMANY, <
TIME-TO-FLUSH-A-CROCK-WITH-ITMANY-IN-NWORLD
>
IFNDEF ITMANY, <
ITMANY←←-1
>
>;TENX
	MOVEI	A,ITMANY	;GET THE ITEM ANY
	POPJ	P,

HERE(TERMINATE)
	MOVE	C,-1(P)
	MOVE	TABL,GOGTAB	;
	LDB	B,INFOTAB(TABL)	;IS HE A PROCESS
	CAIE	B,PRCTYP
	ERR	<TERMINATING A NON-PROCESS>
	MOVE	PB,@DATAB(TABL)	;POINT AT PROCESS
	TLNE	PB,TERM		;ALREADY DEAD
	JRST	RET1		;YES
↑TERMPB:
	MOVE	USER,RUNNER	;COME HERE IF PB LOADED
	CAMN	PB,USER		;IS IT ME THAT IS TO DIE?
	JRST	KILLIT		;YES
	PUSH	P,PRIOR(USER)	;I AM ABOUT TO GET HIGH PRIORITY
	PUSHJ	P,REMPRI
	MOVEI	A,MAXPRI	;
	PUSHJ	P,SETPRI
	MOVEI	A,FIXPRI
	MOVEM	A,PCW(USER)
	MOVEM	P,ACP(USER)
	MOVEM	RF,ACF(USER)
	MOVEM	SP,ACSP(USER)
	MOVE	RF,ACF(PB)
	MOVE	P,ACP(PB)
	MOVE	SP,ACSP(PB)
	MOVEI	A,1		;NOW FIX STATUS
	MOVEM	A,STATUS(USER)	;
	MOVNM	A,STATUS(PB)
	MOVEM	PB,RUNNER	;THE NEW RUNNER
KILLIT:	MOVEI	LPSA,SPRPDA	;THE SPROUTER IS WHERE WE GO BACK TO
	PUSHJ	P,STKUWD	;UNWIND THE STACK
	JRST	CALRET		;GO DIE 

;IF LIVED THROUGH THE DESTRUCTION, WILL COME HERE
FIXPRI:	PUSHJ	P,REMPRI
	POP	P,A		;REAL PRIORITY
	PUSHJ	P,SETPRI
RET1:	SUB	P,[XWD 2,2]	;GET OFF THE PARAMETER
	JRST	@2(P)		;RETURN

COMMENT ⊗The JOIN runtime routine⊗

DSCR JOIN
CAL  PUSH P,SET
     PUSHJ P,JOIN
DES  CAUSES YOUR PROCESS TO WAIT FOR THE TERMINATION OF ANY
PROCESSES NAMED IN ITS ARGUMENT SET
⊗

HERE(JOIN)
	MOVE	PB,RUNNER
	MOVE	B,-1(P)		;THE SET 
	POP	P,-1(P)		;FOR LATER
	JUMPE	B,CPOPJ		;
	MOVE	TABL,GOGTAB	;GET READY FOR CELL GETTING
	HRRZ	A,(B)		;A NOW POINTS AT FIRST
	HRLZ	D,PRCITM(PB)	;THE PROCESS ITEM OF THE JOIN

;NOW LOOP ALONG SET, GIVING WARNINGS

JNST:	HLRZ	C,(A)		;THE ITEM NUMBER
	LDB	B,INFOTAB(TABL)	;GET TYPE
	CAIE	B,PRCTYP	;PROCESS?
	ERR	<ATTEMPT TO DO JOIN ON NON-PROCESS>
	MOVE	B,@DATAB(TABL)	;GET DATUM
	TLNE	B,TERM		;DEAD ???
	JRST	NXTJNR		;YES
	AOS	JOINCT(PB)	;ONE MORE TO DIE
	NNCELL	(C)		;GET (POSSIBLY FIRST) NEW CELL
	HRR	D,JOINS(B)	;LINK TO OLD JOIN LIST
	MOVEM	D,(C)		;NEW CONTENTS OF THIS CELL
	HRRZM	C,JOINS(B)	;NEW JOIN LIST
NXTJNR:	HRRZ	A,(A)		;GET NEXT ENTRY
	JUMPN	A,JNST
	SKIPG	JOINCT(PB)	;DO WE NEED TO WAIT?
	POPJ	P,		;NO
	MOVEI	A,JOINR		;REASON IS A JOIN
	MOVEM	A,REASON(PB)	;
	SETZM	STATUS(PB)	;I AM SUSPENDED
	JRST	SPSRN2		;GO SAVE P,RF,SP & RUN SOMEONE
				;(BUT DONT CHANGE REASON)







COMMENT ⊗THE MAIN PROCESS INITIALIZER⊗

HERE(MAINPR)
	MOVE	USER,GOGTAB
	SKIPE	GGDAD(USER)	;INITIALIZED ALREADY
	POPJ	P,		;YES
	MOVEI	C,NPVARS+40	;HOW MUCH SPACE WE NEED
	PUSHJ	P,CORGET
	ERR	<NO ROOM FOR THE MAIN PROCESS>
	HRRZ	PB,B		;PROCESS BASE
	MOVE	A,SPDL(USER)	;STRING PDL
	MOVEM	A,ISP(PB)
	SETOM	DYNL(PB)
	HLROI	A,SPRPDA
	MOVEM	A,STATL(PB)
	MOVEM	PB,GGDAD(USER)
	MOVEM	PB,RUNNER	;SAY THIS IS THE RUNNER
	HRLZI	A,ZFIRST(PB)
	HRRI	A,ZFIRST+1(PB)
	SETZM	ZFIRST(PB)
	BLT	A,ZLAST(PB)

	MOVEI	C,MAINPI	;THE MAIN PROCESS ITEM NUMBER
	MOVEI	A,PRCTYP	;MAKE A PROCESS
	DPB	A,INFOTAB(USER)
	HRRZM	PB,@DATAB(USER)
	MOVEM	C,PRCITM(PB)

	SETZM	KLOWNR(PB)	;NASTY
	SETOM	STATUS(PB)	;I AM THE RUNNER
	MOVEI	A,STPSZ		;SET DEFAULTS
	MOVEM	A,DEFPSS	;P STACK
	MOVEI	A,STSPST	;
	MOVEM	A,DEFSSS	;SP STACK
	MOVEI	A,STDQNT	;
	MOVEM	A,DEFQNT	;QUANTUM
	MOVEM	A,QUANTM(PB)	;
	MOVEI	A,STDPRI	;STANDARD PRIORITY
	MOVEM	A,DEFPRI	;PRIORITY
	PUSHJ	P,SETPRI	;SET THE PRIORITY
	PUSH	P,[%SPGC]
	PUSHJ	P,SGREM
	PUSH	P,[%ARRSRT]
	PUSHJ	P,SGREM
	PUSH	P,[%PSSGC]
	PUSH	P,[SGLKBK+1]
	PUSHJ	P,SGINS

	POPJ	P,


COMMENT ⊗CALLER , MYPROC, AND PSTATUS ⊗

HERE(CALLER)
	JSP	TEMP,PDG
	ERR	<NOT A PROCESS ITEM>
	TLNE	A,TERM
	ERR	<PROCESS IS TERMINATED>
	MOVE	A,RSMR(A)
C.XIT1:	EXCH	C,-1(P)
C.XIT:	SUB	P,X22
	JRST	@2(P)

HERE(MYPROC)
	MOVE	USER,RUNNER
	MOVE	A,PRCITM(USER)
	POPJ	P,

HERE(PSTATUS)
	JSP	TEMP,PDG
	ERR	<NOT A PROCESS ITEM>
	TLNN	A,TERM
	SKIPA	A,STATUS(A)
	MOVEI	A,2
	JRST	C.XIT1


;PDG -- GETS PROC ITEM IN -1(P) INTO C , CHECKS TYPE, & PUTS DATUM INTO A
;CALLED BY JSP TEMP,PDG
;SIDE EFFECTS: USES USER, PUTS OLD VALUE OF C INTO -1(P), SKIP RETURNS IF
;THE ITEM WAS OK. OTHERWISE RETURNS WITH A= WHATEVER TYPE ITEM IN C IS

PDG:	EXCH	C,-1(P)		;ITEM NUMBER
	MOVE	USER,GOGTAB
	LDB	A,INFOTAB(USER)
	CAIE	A,PRCTYP
	JRST	(TEMP)		;WAS NOT A PROC ITEM
	MOVE	A,@DATAB(USER)
	JRST	1(TEMP)		;RETURN

COMMENT ⊗ PRISET -- ROUTINE USER CALLS TO CHANGE PRIORITY ⊗

HERE(PRISET)
	MOVE	C,-2(P)		;ITEM
	MOVE	TABL,GOGTAB	;
	LDB	A,INFOTAB(TABL)
	CAIE	A,PRCTYP
	ERR	<ATTEMPT TO SET PRIORITY OF NON PROCESS ITEM>
	MOVE	PB,@DATAB(TABL)	;GET DATUM
	TLNE	PB,TERM
	ERR	<ATTEMPT TO SET PRIORITY OF TERMINATED PROCESS>
	PUSHJ	P,REMPRI	;TAKE OFF MY LIST
	MOVE	A,-1(P)
	CAIG	A,17		;CHECK BOUNDS
	CAIGE	A,0
	ERR	<ERR ATTEMPT TO GIVE A PROCESS AN ILLEGAL PRIORITY>
	PUSHJ	P,SETPRI
	SUB	P,X33
	JRST	@3(P)

COMMENT ⊗SPECIAL GC ROUTINE FOR PROCESSES⊗


HERE(%PSSGC)
	MOVE	TEMP,RUNNER
	MOVEM	SP,ACSP(TEMP)
;; dont get it from here (assume was ok)
;	MOVE	RF,RACS+RF(USER)
	MOVEM	RF,ACF(TEMP)
	HRLZI	B,-NPRIS
	HRR	B,GOGTAB
SCHL1:	SKIPN	TEMP,PRILIS(B)
	JRST	NXLS
	PUSH	P,B
SCHL2:	MOVE	RF,ACF(TEMP)
	PUSH	P,TEMP
	PUSHJ	P,%ARSR1
	MOVE	TEMP,(P)
	HRRZ	A,ISP(TEMP)
	MOVE	SP,ACSP(TEMP)
	PUSHJ	P,%SPGC1
	POP	P,TEMP
	HRRZ	TEMP,PLISTE(TEMP)
	JUMPN	TEMP,SCHL2
	POP	P,B
NXLS:	AOBJN	B,SCHL1
	MOVE	TEMP,RUNNER
;; now get rf for this process back (also sp)
	MOVE	RF,ACF(TEMP)
	MOVE	SP,ACSP(TEMP)
	POPJ	P,






COMMENT ⊗INTERRUPT ROUTINES⊗


HERE(DDFINT)			;DO DEFERRED INTERRUPT
	SKIPE	NOPOLL		;IGNORING IT?
	POPJ	P,		;YES
	SETZM	INTRPT		;
	MOVE	USER,RUNNER	;NEED TO SAVE ACS
	POP	P,PCW(USER)	;SAVE PC WORD
	MOVNS	STATUS(USER)	;READY
	MOVEI	TEMP,AC0(USER)	;
	BLT	TEMP,ACP(USER)	;
	MOVEI	A,1		;NEED ALL ACS
	MOVEM	A,REASON(USER)	;
	JRST	FOTR		;SEE WHOM TO RUN

HERE(INTSET)

;CALL IS  INTSET(ITEM,SPROUT OPTS)
;ORS IN THE STATUS OPTIONS FOR SPNDNP+RUNME
;TURNS OFF THE OPTION FOR SPNDME
	MOVE	USER,GOGTAB	;
	SKIPE	DISPAT(USER)	;HAVE TABLES???
	JRST	.+3		;YES
	PUSH	P,[=128]	;DEFAULT BUFFER SIZE
	PUSHJ	P,INTTBL	;GO GET EM
	PUSH	P,-2(P)		;ITEM
	PUSH	P,[INTPDA]	;INTERRUPT PROCEDURE
	MOVE	A,-2(P)		;GET OPTIONS
	TRZ	A,SPNDME	;SET UP STATUS FIELD
	TRO	A,SPNDNP+RUNME	;
	PUSH	P,A		;
	PUSH	P,[0]		;NO KILL SET
	PUSHJ	P,SPROUT	;SPROUT IT

	MOVE	C,-2(P)		;THE ITEM
	MOVE	A,@DATM
	MOVE	USER,GOGTAB
	MOVEM	A,INTPRC(USER)	;REMEMBER INTERRUPT PROCESS BASE
	MOVE	A,-1(P)		;
	TRNE	A,PRIMSK	;DID HE SPEC A PRIORITY
	JRST	POK

	PUSH	P,C		;ITEM
	PUSH	P,[0]
	PUSHJ	P,PRISET	;SET THE PRIORITY
POK:
	SUB	P,X33
	JRST	@3(P)




HERE(CLKMOD)
NOTENX<
	MOVE	USER,GOGTAB	;
	SOSG	TIMER(USER)	;IF COUNTDOWN COMPLETE THEN
	SETOM	INTRPT		;SIGNAL THE INTERRUPT
	POPJ	P,		;LET CALLER DISMIS
>;NOTENX
TENX<
	ERR <CLKMOD not implemented.>
>;TENX

DEFINE QW(VALAC,WPAC,RPTR,WTOP,WBOT,OVINST) <
	MOVEM	VALAC,(WPAC)
	ADDI	WPAC,1
	CAMLE	WPAC,WTOP
	MOVE	WPAC,WBOT
	CAMN	WPAC,RPTR
	OVINST
	>

DEFINE QR(VALAC,WPTR,RPAC,WTOP,WBOT,OVINST) <
	CAMN	RPAC,WPTR
	OVINST
	MOVE	VALAC,(RPAC)
	ADDI	RPAC,1
	CAMLE	RPAC,WTOP
	MOVE	RPAC,WBOT
	>

DEFINE IQW(VAC) <
	QW(VAC,11,<INTQRP(USER)>,<INTQWT(USER)>,<INTQWB(USER)>,< JRST IQWOV >)
	>

HERE(DFR1IN)
	MOVE	USER,GOGTAB	;SO CAN CALL ANY TIME
	MOVE	11,INTQWP(USER)
NOTENX <
	IQW	1
	IQW	6
	MOVE	TEMP,XJBCNI
	IQW	TEMP
	MOVE	TEMP,XJBTPC
	IQW	TEMP
>;NOTENX
TENX <
	IQW	14		;LPC WORD FOR THIS INTERRUPT.
>;TENX
	MOVE	TEMP,RUNNER
	IQW	TEMP
	MOVE	1,-1(P)
VILOOP:	MOVE	TEMP,(1)
	IQW	TEMP
	AOBJN	1,VILOOP
	MOVEM	11,INTQWP(USER)
	SETOM	INTRPT
	SKIPN	7,INTPRC(USER)	;INTERRUPT PROCESS
	JRST	DF.X
	MOVEI	TEMP,1		;READY
	SKIPL	STATUS(7)
	MOVEM	TEMP,STATUS(7)
DF.X:	SUB	P,X22
	JRST	@2(P)

IQWOV:	ERR	<DRYROT IN INTMOD -- WRITER>
	JRST	DF.X

HERE(DFRINT)
NOTENX <
	PUSH	P,@DFRINF(USER)
>;NOTENX
TENX <
	PUSH	P,13		;PUSH AOBJN PTR, 3RD ARG TO INTMAP
>;TENX
	PUSHJ	P,DFR1IN
	POPJ	P,



COMMENT ⊗THE INTERRUPT PROCESS⊗


DEFINE IQR(AC) <
	QR	(AC,<INTQWP(USER)>,D,<INTQWT(USER)>,<INTQWB(USER)>,<JRST QRERR>)
	>

HERE(INTPRO)
	PUSH	P,RF
	PUSH	P,INPDA0
	PUSH	P,SP
	MOVE	USER,GOGTAB
DO1INT:	MOVE	D,INTQRP(USER)	;READER OF THE QUEUE
	QR	(1,<INTQWP(USER)>,D,<INTQWT(USER)>,<INTQWB(USER)>,< JRST ALDCIS >);
;ABOVE GETS LPC WORD ON TENEX, FOR IJBTPC
NOTENX <
	IQR	6
	IQR	TEMP
	MOVEM	TEMP,IJBCNI(USER)
	IQR	TEMP
	MOVEM	TEMP,IJBTPC(USER)
>;NOTENX
TENX <
	MOVEM	1,IJBTPC(USER)
>;TENX
	IQR	TEMP
	MOVEM	TEMP,IRUNNR(USER)
	IQR	B
TENX <
	SUBI	B,1		;GROSS CROCK - FIND OUT WHY WORKS SOMEDAY
				;ACTUALLY FIND OUT WHY STANFORD WORKS WITHOUT
				;THE CROCK. SEEMS TO BE DISAGREEMENT BETWEEN
				;QUEUE WRITER AND READER AS TO WHETHER THE COUNT
				;WORD INCLUDES SELF OR NOT.
>;TENX
	JUMPE	B,DISDFI
DO1I.1:	
	IQR	C
	MOVEM	D,INTQRP(USER)
	SOJLE	B,DO1I.2
	PUSH	P,C
	JRST	DO1I.1
DO1I.2:	HLRZ	D,C		
	CAIN	D,-1		;IS THIS A PDA
	JRST	DO1I.4		;NO -- JUST ISSUE THE CALL
	TLNN	C,-1		;WAS THERE A CONTEXT??
	JRST	DO1I.3		;NO
	MOVS	D,C		;PDA,,STATIC LINK
	HRRZ	TEMP,PD.PPD(C)	;PARENTS PDA
	PUSH	P,[ DO1INT]
	PUSH	P,RF
	HLRZ	LPSA,1(D)	;THE PDA IIN THE STACK
	CAIE	LPSA,TEMP	;BETTER BE THE SAME
	ERR	<ATTEMPT TO REFERENCE A NON-EX ENVIRONMENT IN INTPRO >
	PUSH	P,D		;STATIC LINK
	PUSH	P,SP		;SAVE SP
	HLRZ	C,PD.PPD	;END OF MKSEMT
	JRST	(C)
DO1I.3:	HRRZ	C,PD.(C)	;ENTRY ADDRESS
DO1I.4:	PUSHJ	P,(C)		;CALL THE PROCEDURE
	JRST	DO1INT

ALDCIS:	MOVE	PB,RUNNER	;ALL DONE CURRENT INTERRUPTS
	SETZM	STATUS(PB)	;SUSPEND SELF
	PUSHJ	P,SPSRN1
	JRST	DO1INT

QRERR: ERR	<DRYROT IN INTPRO -- READER>
	JRST 	ALDCIS


DISDFI:	ERR	<STRANGENESS IN DEFERRED INTERRUPT>,1
	JRST	DO1INT

DEFINE IPDE(X,V), < PUTINLOC(INTPDA+X,V) >

INTPDA: BLOCK PD.XXX+1

	IPDE	(PD.,INTPRO)
	IPDE	(PD.DSW,3)
	IPDE	(PD.PDA,<<INPDA0: XWD INTPDA,0>>)
	IPDE	(PD.LLW,<INTPDA+PD.XXX>)
	IPDE	(PD.DLW,<INTPDA+PD.XXX>)




;DFCPKT(5 WD BLOCK ADDR,EVTYP,EVNOT,OPTS)
; CREATES A FIVE WORD BLOCK FOR A DEFERED CAUSE & RETURNS AN AOBJN 
; POINTER TO THE BLOCK
; IF THE SUPPLIED BASE ADDRESS IS ≠0 THEN USES THAT ADDRESS
; OTHERWISE DOES A CORGET TO GET THE FIVE WORDS

HERE(DFCPKT)
	SKIPE	B,-4(P)		;DID USER GIVE ME A BLOCK
	JRST	DFC.1		;YES
	MOVEI	C,5
	PUSHJ	P,CORGET
	ERR	<NO CORE LEFT>
DFC.1:	HRLI	B,-5
	MOVE	A,B		;AOBJN PTR
	SUB	B,X11		;READY FOR PUSHES
	PUSH	B,[4]
	PUSH	B,-3(P)
	PUSH	B,-2(P)
	PUSH	B,-1(P)
	PUSH	B,[XWD -1,CAUSE]
	SUB	P,[XWD 5,5]
	JRST	@5(P)		;RETURN

COMMENT ⊗ CAUSE ⊗

HERE(CAUSE)
	MOVE	PB,RUNNER
	AOS	A,CAUSES(PB)
	CAIE	A,1		;FIRST CAUSE?
	JRST	DFRCS		;NO -DEFER IT
	POP	P,CAUSRA(PB)	;SAVE RETN ADDRESS
CSIT:	PUSHJ	P,CAUSE1	;DO THE WORK
	MOVE	PB,RUNNER
	SOSG	A,CAUSES(PB)	;DONE ONE
	JRST	CSE.X		;ALL ARE DONE -- CHECK FOR SCHED REQ
	MOVEI	KL,CAUSEQ(PB)	;GET NEXT FROM QUEUE
	PUSHJ	P,REMCAR
	HLRZ	B,(A)		;PICK UP TYPE
	PUSH	P,B
	HRRZ	B,(A)		;NOTICE
	PUSH	P,B
	PUSH	P,1(A)		;OPTIONS
	MOVE	TABL,GOGTAB
	HRR	B,FP2(TABL)	;RELEASE 2 WD BLOCK
	HRRM	B,(A)
	HRRM	A,FP2(TABL)
	JRST	CSIT		;GO WORK ON THIS
DFRCS:	MOVE	TABL,GOGTAB	;
	NNCLL2	(B)		;GET 2 WD CELL
	POP	P,TMP		;RETURN ADDRESS
	POP	P,1(B)		;OPTS
	POP	P,(B)		;NOTICE
	POP	P,A		;TYPE
	HRLM	A,(B)
	MOVEI	KL,CAUSEQ(KL)	;PUT ON CAUSE QUEUE
	PUSHJ	P,ITAILS	;PUT ON TAIL OF QUEUE
	JRST	(TMP)		;RETURN
CSE.X:	MOVE	USER,GOGTAB
	SKIPN	SCHDRQ(USER)	;SCHEDULING REQUEST
	JRST	@CAUSRA(PB) 	;NO
	SETZM	SCHDRQ(USER)	;YES
	PUSH	P,CAUSRA(PB)	;YES
	JRST	URSCHD		;RESCHEDULE

COMMENT ⊗CAUSE1 -- ROUTINE TO DO ACTUAL WORK ⊗

HERE(CAUSE1)
CSE1:	JSP	TMP,EVTCK3	;VERIFY THAT THIS IS AN EVENT ITEM
				;ALSO EVT ← DATUM ,B&C←ITEM #
	SKIPE	PDA,CAUSEP(EVT)	;DID THE USER SAY SOMETHING???
	JRST	USPPRC		;USER SPEC PROCEDURE
	MOVE	FF,-1(P)	;OPTIONS
	SKIPN	TMP,WAITLS(EVT)	;WAS ANYONE WAITING?
	JRST	SCA.2		;NO
	MOVE	TEMP,B		;EV TYP NO
	MOVE	TMP,(TMP)	;LAST,,FIRST
	MOVE	D,-2(P)		;NOTICE NO
SCA.1:	MOVE	TMP,(TMP)	;WAIT ENTRY
	HLRZ	C,TMP		;PROCESS NO
	MOVE	TABL,GOGTAB	;SET TABL TO RIGHT THING
	PUSHJ	P,ANSWR1	;SPECIAL ENTRY POINT IN ANSWER
	TRNE	A,NOJOY		;DID WE SUCCEED??
	JRST	SCA.1A		;NO
	TRNN	A,RETAIN	;KEEP THE NOTICE??
	TRO	FF,DNTSAV	;YES
	TRNN	FF,TELLAL	;TELL THE WHOLE WORLD?
	JRST	SCA.2		;NO
SCA.1A:	TRNE	TMP,-1		;ANY LEFT
	JRST	SCA.1		;YES

SCA.2:	TRNE	FF,DNTSAV	;SAVE IT?
	JRST	SCA.3		;NO
	MOVE	B,-2(P)		;ITEM NO OF NOTICE
	MOVEI	KL,NOTCLS(EVT)	;
	PUSHJ	P,ITAILS	;PUT ON END OF NOTIICE LIST
SCA.3:
	MOVE	USER,GOGTAB
	TRNE	FF,SCHDIT	;WANT TO RESCHEDULE
	SETOM	SCHDRQ(USER)	;RESCHEDULE REQUEST
SCA.X:	SUB	P,X44		;RETURN
	JRST	@4(P)

USPPRC:	MOVE	B,PD.(PDA)	;HERE IF USER SPECIFIED A PROCEDURE
;;#NB# !TYPO -- WAS A TLNE
	TLNN	PDA,-1		;CONTEXT GIVEN
	JRST	(B)		;NO
	PUSH	P,RF		;SET UP CONTEXT
	HRRZ	C,PD.PPD	;PARENTS PDA
	MOVS	A,PDA		;
	HLRZ	D,1(A)
	CAME	D,C		;SAME?
	ERR 	<CONTEXT WRONG OR CLOBBERED IN INTERP CALL
USER SPEC EVENT PROC >
	PUSH	P,A		;STATL
	PUSH	P,SP
	HLRZ	B,PD.PPD(PDA)
	JRST	(B)		;GO TO INSTR AFTER THE MKSEMT

COMMENT ⊗ANSWER -- subroutine used by CAUSE⊗

HERE(ANSWER)

;A←ANSWER(EV!TYP,NOT,PROCESS!ITEM);
;IF ATTEMPT TO ANSWER INTERROGATE IS SUCCESSFUL, A ← REQUEST CODE
;OTHERWISE, NOJOY BIT IS ON IN A & REST OF WORD IS INVALID

	MOVE	TEMP,-3(P)	;EV TYPE
	POP	P,-3(P)		;RET ADRS
	POP	P,C		;PROCESS ITEM
	POP	P,D		;NOTICE
	MOVE	TABL,GOGTAB
	LDB	B,INFOTAB(TABL)
	CAIE	B,PRCTYP
	ERR	<NOT A PROCESS ITEM>

;THE REST OF THIS IS CALLED INTERNALLY 
;EXPECTS D= NOIICE, C=PROCESS ITEM, TEMP=EV TYPE
;        ALSO TABL SET UP FOR PROCESS ITEM
;MODIFIES A,B,C,TABL,PB,TEMP,USER

ANSWR1:	MOVE	PB,@DATAB(TABL)	;THE PROCESS BASE
	TLNN	PB,TERM		;TERMINATED?
	SKIPE	STATUS(PB)	;OR NOT SUSPENDED??
	JRST	NOANS		;YES
	AOS	STATUS(PB)	;MAKE READY
	MOVEM	D,AC1(PB)
ANSWR2:	PUSHJ	P,DELWRQ	;DELETE ALL WAIT REQUESTS
	MOVE	A,INTRGC(PB)	;THE INTERROG CONTROL WORD
	TRNN	A,SAYWCH	;ASKED FOR THE ASSOCIATION
	POPJ	P,		;NO
	PUSH	P,[EVTYPI]	;
	PUSH	P,D
	PUSH	P,TEMP
	PUSHJ	P,STACSV	;SAVE ALL ACS
	MOVEI	5,16		;MAKE
	PUSHJ	P,LEAP
	PUSHJ	P,STACRS	;GET ACS BACK
	POPJ	P,
NOANS:	TRO	A,NOJOY
	POPJ	P,		;RETURN
COMMENT ⊗DELWRQ -- delete all wait requests⊗

;EXPECTS PB = THIS PROCESS
;MANGLES A,B,C,TABL

DELWRQ:	SKIPN	A,WAITES(PB)
	POPJ	P,
	PUSH	P,KL
	MOVE	A,(A)		;A IS LAST,,FIRST
DTHSRQ:	MOVE	A,(A)		;NEXT ENTRY
	HLRZ	C,A		;ITEM NUMBER OF TYPE
	PUSH	P,A		;FOR SAFE KEEPING
	MOVE	TABL,GOGTAB	;
GLOB <
;;%BE%
	CAIL	C,GBRK		;GLOBAL ??
	MOVEI	TABL,GLUSER	;
>;GLOB
	MOVE	A,@DATAB(TABL)
	MOVEI	KL,WAITLS(A)
	MOVE	B,PRCITM(PB)
	PUSHJ	P,DELTLE	;DELETE ELEMENT
				;SETS TABL BACK TO GOGTAB
				;(MAYBE)
	POP	P,A		
	TRNE	A,-1		;ANY LEFT
	JRST	DTHSRQ		;YES
	MOVE	A,WAITES(PB)
	MOVE	TABL,GOGTAB
	HLRZ	B,(A)		;ADDRESS OF LAST
	HRRZ	C,FP1(TABL)
	HRRM	C,(B)		;RELEASE THE LOT
	HRRM	A,FP1(TABL)
	SETZM	WAITES(PB)	;NONE LEFT
	POP	P,KL
	POPJ	P,
COMMENT ⊗INTERROGATE⊗
HERE(INTERROGATE)
	SKIPN	B,-2(P)		;SET OR ITEM
	ERR	<NULL INTERROGATION???>
	TLNN	B,-1		;SET?
	JRST	ASK1.0		;NO
	MOVEI	FF,MULTIN
	IORM	FF,-1(P)	;SAY MULT REQUEST
	MOVE	TMP,(B)		;LAST,,FIRST
MPCI:	MOVE	TMP,(TMP)	;NEXT ENTRY
	HLRZ	B,TMP
	PUSH	P,TMP
	PUSH	P,B		;TYPE ITEM
	PUSH	P,-3(P)		;OPTIONS WORD
	PUSHJ	P,ASK1.0
	POP	P,TMP		;GET LIST BACK
	CAIE	A,NIC		;FIND ONE??
	JRST	ASK1.X		;YES
	TRNE	TMP,-1		;DONE LIST???
	JRST	MPCI		;NO
	MOVE	FF,-1(P)
	TRNN	FF,WAIT		;WAITING REQUESTED
	JRST	ASK1.X		;NO
	MOVE	PB,RUNNER	;SUSPEND SELF
	MOVE	B,-2(P)		;THE LIST
	MOVE	TMP,(B)		;LAST,,FIRST
BWL:	MOVEI	KL,WAITES(PB)
	MOVE	TMP,(TMP)	;NEXT
	HLRZ	B,TMP		;ITEM NO
	MOVE	C,B
	MOVE	EVT,@DATM
	PUSHJ	P,ITAILS	;ON TAIL
	MOVE	B,PRCITM(PB)	;
	MOVEI	KL,WAITLS(EVT)
	PUSHJ	P,ITAILS	;ON EVENT WAIL LIST
	TRNE	TMP,-1
	JRST	BWL		;CDR DOWN LIST
	JRST	DOWAIT		;GO WAIT
COMMENT ⊗ASK -- used by INTERROGATE⊗

ASK1I:	MOVE	B,-2(P)
ASK1.0:	JSP	TMP,EVTCKB	;GET DATUM OF EVENT TYPE
;;#NB# ! WAS SKIPE A,...
	SKIPE	PDA,INTRGP(EVT)	;USER WAIT PROCESS??
	JRST	USPPRC		;YES
;;# #! ASKNTC POINTS HERE
ASKN:	MOVE	FF,-1(P)	;CONTROL WORD
	SKIPN	A,NOTCLS(EVT)	;ANY READY TO GO
	JRST	ASK1.4		;NO
	TRNE	FF,RETAIN	;RETAIN THIS ONE??
	JRST 	ASK1.1		;YES
	MOVEI	KL,NOTCLS(EVT)
	PUSHJ	P,REMCAR	;GET THE FIRST
	JRST	ASK1.2		;TEST SAYWCH
ASK1.1:	MOVE	A,(A)
	HLRZ	A,(A)		;THI FIRST ITEM
ASK1.2:	TRNN	FF,SAYWCH	;WANT ASSOCIATION
	JRST	ASK1.3		;NO
	PUSH	P,[EVTYPI]	;EVENT TYPE
	PUSH	P,A		;NOTICE
	PUSH	P,-4(P)		;WHATEVER TYPE IT IS
	PUSHJ	P,STACSV	;SAVE REGS
	MOVEI	5,16		;MAKE
	PUSHJ	P,LEAP
	PUSHJ	P,STACRS	;GET ACS BACK
ASK1.3:
ASK1.X:	SUB	P,X33
	JRST	@3(P)		;RETURN

ASK1.4:	MOVEI	A,NIC
	TRNE	FF,WAIT		;IF NOT WAITING OR 
	TRNE	FF,MULTIN	;MUL REQ
	JRST	ASK1.X		;ALL DONE
	MOVE	PB,RUNNER
	MOVEI	KL,WAITES(PB)	;WAIT ON THIS ONE
	PUSHJ	P,ITAILS	;PUT ON TAIL
	MOVE	B,PRCITM(PB)
	MOVEI	KL,WAITLS(EVT)
	PUSHJ	P,ITAILS
DOWAIT:	SETZM	STATUS(PB)
	MOVEM	FF,INTRGC(PB)
	MOVEI	A,WAITNG
	MOVEM	A,REASON(PB)
	PUSHJ	P,SPSRN2	;WAIT
	JRST	ASK1.X		;RETURN

HERE(ASKNTC)
;;#NC# ! WAS A PUSHJ
	JSP  	TMP,EVTCK3	;CHECK EVENT TYPE
	JRST	ASKN		;GO DO IT

;ROUTINE TO SET UP EVENT TYPE ITEM
;SETS B & C TO ITEM #
;SETS EVT TO DATUM
;SETS TABL TO RIGHT THING FOR ITEM
;CALLED VIA JSP TMP,EVTCKX


EVTCK3:	SKIPA	B,-3(P)
EVTCK2:	MOVE	B,-2(P)
EVTCKB:	MOVE	TABL,GOGTAB
	MOVE	C,B
GLOB <
;;%BE% allow for global items RHT 1-8-74
	CAIL	C,GBRK		;IS THE ITEM GLOBAL
	MOVEI	TABL,GLUSER	;YES, USE GLOBAL INFO STUFF
>;GLOB
	LDB	A,INFOTAB(TABL)
	CAIE	A,EVTTYP
	ERR	<THIS ITEM IS NOT AN EVENT TYPE>,6
	MOVE	EVT,@DATAB(TABL)
GLOB <
;;%BE% real hack for now, only the item gets to be global.
	MOVE	TABL,GOGTAB
>;GLOB
	JRST	(TMP)
COMMENT ⊗MKEVTT,SETCP,& SETIP⊗
HERE(SETCP)
	JSP	TMP,EVTCK2
	MOVE	A,-1(P)
	MOVEM	A,CAUSEP(EVT)
XIT3:	SUB	P,X33
	JRST	@3(P)


HERE(SETIP)
	JSP	TMP,EVTCK2
	MOVE	A,-1(P)
	MOVEM	A,INTRGP(EVT)
	JRST	XIT3

HERE(MKEVTT)	;MAKE EVENT TYPE
	MOVE	C,-1(P)
	MOVEI	A,EVTTYP
	MOVE	TABL,GOGTAB
	DPB	A,INFOTAB(TABL)
	MOVEI	C,NEVARS
	PUSHJ	P,CORGET
	ERR	<NO CORE LEFT -- MKEVT>
	MOVE	C,-1(P)
	MOVE	TABL,GOGTAB
	MOVEM	B,@DATAB(TABL)
	HRLI	D,(B)
	HRRI	D,1(B)
	SETZM	(B)
	BLT	D,NEVARS-1(B)
	SUB	P,X22
	JRST	@2(P)

COMMENT ⊗SPARE HERE TABLE ENTRIES⊗

;THE IDEA IS THAT THIS WAY WE HAVE FLEXIBILITY 
;WITHOUT GOING TO A NEW SEGMENT ALL THE TIME

HERE(NWLD1)
HERE(NWLD2)
HERE(NWLD3)
HERE(NWLD4)
HERE(NWLD5)
	ERR <DRYROT IN NWORLD>

BEND PROCSS

ENDCOM(PRC)

COMPIL(IRP,,,,,,DUMMYFORGDSCISS)
NOTENX <
DEFINE IENS1 < INTTBL,INTMOD,ENABLE,DISABLE,INTMAP>
>;NOTENX
TENX <
DEFINE IENS1 < INTTBL,ENABLE,DISABLE,ATI,DTI,INTMAP>
>;TENX
DEFINE IEXT1 < GOGTAB,INTRPT,X22,CORGET >

IFN APRISW <
DEFINE XJBCNI <JOBCNI>
DEFINE XJBTPC <JOBTPC>
DEFINE XJBAPR <JOBAPR>
DEFINE IEXT5 <JOBCNI,JOBTPC,JOBAPR,XJBENB,APRACS>
IFN ALWAYS <
EXTERN JOBCNI,JOBTPC,JOBAPR	;THESE ARE ALWAYS EXTERNAL
>;IFN ALWAYS
>;IFN APRISW
IFE APRISW <
DEFINE IEXT5 <XJBCNI,XJBTPC,XJBAPR,JOBINT>
IFN ALWAYS <
EXTERNAL JOBINT ;THIS FELLOW IS ALWAYS EXTERNAL
>;IFN ALWAYS
>;IFE APRISW

COMPXX(IRP,< IENS1 >,< IEXT1,IEXT5 >
		,<INTERRUPT STUFF>,,HIIFPOSSIB)

BEGIN IRPPKG

INTDBG←←0

NOTENX<
IFE APRISW <

IFE INTDBG <
OPDEF DISMIS [ CALLI 400024]
>;IFE INTDBG
IFN INTDBG <
DEFINE DISMIS < JRST DSMMSR >
DSMMSR:
	HRLZI	P,INACS
	BLT	P,P
	JRST	@JOBTPC
INACS:	BLOCK 	20
>;IFN ITDBG
OPDEF INTORM [ CALLI 400026]
OPDEF INTACM [ CALLI 400027]
OPDEF INTENB [ CALLI 400025]
>;IFE APRISW

IFN APRISW <
OPDEF APRENB [ CALLI 16]
DEFINE DISMIS < JRST DSMSSR >
DSMSSR:	HRLZI	17,APRACS
	BLT	17,17	;BLT BACK ALL ACS
	JRST	@XJBTPC
>;IFN APRISW
>;NOTENX

HERE(INTTBL)
;CALL IS INTTBL(BUFFER!SIZE)
;SETS UP TABLES NEEDED BY THE INTERRUPT SYSTEM
;ON TENEX, SEE DFEINT FOR OTHER TABLES OMITTED HERE

	MOVE	USER,GOGTAB	;
INTTB1:
NOTENX <
	MOVEI	C,=110
	ADD	C,-1(P)
>;NOTENX
TENX <
	MOVE	C,-1(P)
>;TENX
	PUSHJ	P,CORGET
	ERR <NOT ENOUGH SPACE FOR INTSET>
NOTENX <
	SKIPN	D,DISPAT(USER)	;ALREADY HABE ONE?
	JRST	INTTB2		;NO
	MOVSS	D		
	HRR	D,B		;D ← OLD,,NEW
	BLT	D,=71(B)	;COPY OLD DISPAT TABLE
	JRST	INTTB3
INTTB2:	SETZM	(B)
	HRL	A,B
	HRRI	A,1(B)
	ADDI	C,-1(B)
	BLT	A,(C)
INTTB3:	HRLI	B,10
	MOVEM	B,DISPAT(USER)
	ADDI	B,=36
	MOVEM	B,DFRINF(USER)
	ADDI	B,=36
>;NOTENX
	HRRZM	B,INTQWB(USER)
	HRRZM	B,INTQWP(USER)
	HRRZM	B,INTQRP(USER)
	ADD	B,-1(P)
	HRRZM	B,INTQWT(USER)
NOTENX <
	HRLI	B,-20
	MOVEM	B,IPDP(USER)
	ADD	B,[XWD -10,20]
	MOVEM	B,ISPDP(USER)
>;NOTENX
	SUB	P,X22
	JRST 	@2(P)




NOTENX <
;AGAIN SEE DFEINT FOR TENEX EQUIVALENT OF FOLLOWING STUFF.
IFN INTDBG,<
INTAPR:	MOVEM	P,INACS+17
	MOVEI	P,INACS
	BLT	P,INACS+16
>;IFN INTDBG

HERE(INTMOD)
IFN APRISW <
	MOVEM	17,APRACS+17
	MOVEI	17,APRACS
	BLT	17,APRACS+16	;SAVE THE ACS
>;IFN APRISW
	MOVE	USER,GOGTAB
	MOVE	7,XJBCNI	;PICK UP THE BITS
IFN APRISW <			
	ANDI	7,235110	;BE SURE LEGIT BITS ONLY
>;IFN APRISW
	MOVE	P,IPDP(USER)	;A PDL FOR THIS
	MOVE	SP,ISPDP(USER)	;A STRING PDL
DSPIT:	JFFO	7,DODISP	;DISPATCH INDEX
	ERR	<DRYROT: INTMOD>
DODISP:
	SKIPN	7,@DISPAT(USER)	;GO DISPATCH
	DISMIS			;DISMISS
	PUSHJ	P,(7)		;
	DISMIS
>;NOTENX

COMMENT ⊗PROCEDURES TO ENABLE FOR INTERRUPTS⊗

;ENABLE(INDEX) -- DOES AN INTORM, OR AIC ON TENEX
;DISABLE(INDEX) -- DOES AN INTACM, OR DIC ON TENEX

NOTENX <
IFE APRISW <
HERE(ENABLE)
	SKIPA	B,[ INTORM A, ]
HERE(DISABLE)
	MOVE	B,[ INTACM A, ]
	MOVN	C,-1(P)
	HRLZI	A,400000
	LSH	A,(C)
	XCT	B
	SUB	P,X22
	JRST	@2(P)
>;IFE APRISW
IFN APRISW <
HERE(ENABLE)
	SKIPA	B,[OR A,XJBENB]
HERE(DISABLE)
	MOVE	B,[ANDCA A,XJBENB]
	MOVN	C,-1(P)		;
	HRLZI	A,400000
	LSH	A,(C)		;THE BIT
EXPO <
	TRO	A,400000	;REPETITIVE ENABLE (THIS MIGHT GET YOU
				;IN TROUBLE WITH THE CLOCK INTERRUPT)
>;EXPO
	XCT	B
	MOVEM	A,XJBENB	;REMEMBER
	APRENB	A,
	SUB	P,X22
	JRST	@2(P)
>;IFN APRISW
>;NOTENX
TENX <
HERE(ENABLE)
	SKIPA C,AIC1
HERE(DISABLE)
	MOVE C,DIC1
	MOVN A,-1(P)
	HRLZI B,400000
	LSH B,(A)
	HRRZI A,400000	;Fork handle for 'this fork'
	XCT C
	SUB P,X22
	JRST @2(P)

AIC1:	JSYS	AIC
DIC1:	JSYS	DIC

HERE(DTI)
	HRRZ	A,-1(P)		;CHARACTER TO DE-ACTIVATE
	JUMPL	A,DTIERR
	CAILE	A,=35
DTIERR:	  ERR 	<DTI:  Terminal interrupt code not in range>
	JSYS	DTI
	SUB	P,X22
	JRST	@2(P)


HERE(ATI)
	HRRZ	B,-2(P)		;1ST ARG IS "TERMINAL INTERRUPT CODE"
	JUMPL	B,.+2		;31-35 UNUSED, 0 IS BREAK OR ↑@
	 CAILE	B,=35		;OTHERS OUT OF RANGE
	 ERR	<ATI: Terminal Interrupt Code not in range>,1
	MOVE	A,-1(P)		;2nd arg is interrupt channel, 0-35
	JUMPL	A,BADCHN
	CAILE	A,=35
	 JRST	BADCHN
	CAIGE	A,=24
	 CAIG	A,=5
	SKIPA
BADCHN:	 ERR	<ATI: Term. Intrpt. Chnl. not 0-5 or 24-35 dec.>,1
	HRL	A,B		;MAKE XWD TERMINAL CODE, CHANNEL NUMBER
	JSYS	ATI
	SUB	P,X33
	JRST	@3(P)

ATI1:	JSYS	ATI
DTI1:	JSYS	DTI

;To arm a keybd interrupt on TENEX you must do the ATI in addition
;to the regular stuff (INTMAP's & ENABLE's) because any channel which
;can take a keybd interrupt (namely 0-5 and 24-35) can take any
;interrupt character so you must declare.
>;TENX

;INTMAP(INDEX,ENTRY!ADDR,PARAM);
NOTENX <
;DISPAT[INDEX]←ENTRY!ADDR
;DFRINF[INDEX]←PARAM

HERE(INTMAP)

IFE APRISW <
	MOVEI	A,XJBCNI
	MOVEM	A,JOBINT
>;IFE APRISW

IFE INTDBG,<
	MOVEI	A,INTMOD
>;IFE INTDBG
IFN INTDBG,<
	MOVEI	A,INTAPR
>;IFN INTDBG
	MOVEM	A,XJBAPR
	MOVE	USER,GOGTAB
	SKIPE	DISPAT(USER)
	JRST	.+3
	PUSH	P,[=128]
	PUSHJ	P,INTTB1	;GET MINIMAL TABLES
	MOVE	10,-3(P)	;GET INDEX
	POP	P,-3(P)		;RET ADR
	POP	P,@DFRINF(USER)
	POP	P,@DISPAT(USER)
	POPJ	P,
>;NOTENX
TENX <
HERE(INTMAP)
	HRRZI	A,400000
	JSYS	RIR
	JUMPE	2,[MOVE	2,[XWD	LEVTAB,CHNTAB]
		   JSYS SIR
		   JRST .+1]
	JSYS	EIR		;ENABLE INTERRUPT SYSTEM IN GENERAL
	SKIPL	A,-3(P)		;CHNL
	CAILE	A,=35
	 ERR	<INTMAP: Channel # not between 0 and 35 dec.>



;The CHNL'th word of the actual TENEX channel table gets the value
;	LVL,,jmpchn-slot		The LVL is the interrupt level. The
;dispatch is to the parallel entry of JMPCHN, a table of 3-word slots,
;one per channel, addressed by the XX var JMPCHN, each of which
;looks like this if the channel is in use:
;	JSA USER,EINT<N>
;	Ptr to simple-procedure		;POPJ'D TO IN EINTA
;	AOBJN ptr for calling block
;
;The EINTn is EINT1, EINT2,  or EINT3, depending on the level of
;the interrupt. INTMAP always initializes an interrupt to level 3,
;i.e. EINT3, but in the future a subr may be provided to change the level
;after the INTMAP is done (or perhaps an argument to INTMAP).
;The three EINT's all immediately jrst to EINTA, but each must have
;its own return vector for reentrancy's sake.

	ADDI	2,(A)		;2 pts to CHNTAB slot.
	IMULI	A,3
	ADDI	A,JMPCHN	;A pts to JMPCHN slot.
	HRLI	A,3		;Level 3 assumed.
	MOVEM	A,(2)		;CHNTAB[chnl]←level3,,JMPCHN[3*chnl]
	POP	P,-3(P)		;Return goes over 1st arg (chnl)
	POP	P,2(A)		;3rd INTMAP arg, AOBJN ptr, to 3rd
				;word of JMPCHN slot. DFRINT uses it.
	POP	P,1(A)		;2nd JMPCHN wrd gets XWD unused,user's simple
				;procedure. Goes onto stack and is POPJ'd to.
	MOVE	B,[JSA	USER,EINT3]	;Level 3 assumed.
	MOVEM	B,(A)	;1st JMPCHN slot word.
	POPJ	P,






;EINT1, EINT2, and EINT3 are in the XX table since they get JSA'd to.
;Each immediately JRST's to EINTA so that all share the code thru the
;DEBRK in EINTR. Note that the TENEX DEBRK call is the normal way to
;leave interrupt level whether continuing normally or forcing continuation
;at a specified place (this is different than Stanford's DEBRK call).
;The following code saves all accumulators because that's what the DEC 
;monitor does and any other solution would have destroyed all semblance of
;compatibility between DECUS or Stanford SAIL and TENEX SAIL.
;Note however that the work of saving AC's has to be done somewhere
;if you are going to run SAIL code at interrupt level; and if you want to
;hack a very fast interrupt in machine language you can easily do it yourself
;by using RIR to find the channel table and so on.
;
;A few more stack words than are really necessary are covered by the
;ADD P,[XWD 21,21] deliberately, in order to leave some room in case the
;interrupted code was not observing stack discipline religiously, because
;it is fairly common in the SAIL system to see routines end with sequences like:
;	SUB	P,X44
;	JRST	4(P)
;
;One non-obvious trick here is that the BLT's which save and restore ac's 
;save and restore a clobbered value of USER, because the value of USER which
;prevailed in the nterrupted code is saved by the JSA/JRA pair around the
;whole mess. Finally it may be helpful to note that at the point just before
;EINTR, i.e. the POPJ, the top of the stack contains:
;0(P)		USERCODE	;addr. of his simple procedure, so that we
				;"call" it with POPJ
;-1(P)		AOBJN ptr	;to the "calling block" parameters to his code
;-2(P)		EINTR		;Fake return so his stuff returns to us.

;We also save 40 for reentrancy since his simple procedure may
;use compiler-emitted UUO's like any other code and thus clobber UUO's in
;progres in the interrupted code (obviously).

INTERNAL	EINTA
EINTA:	ADD	P,[XWD 23,23]
	TLNN	P,400000	;TEST FOR PDL OVERFLOW
	  ERR	<EINTA:  PDL overflow>
	MOVEM	16,0(P)
	HRRZI	16,-15(P)
	BLT	16,-1(P)
	MOVE	16,0(P)
	PUSH	P,40
	PUSH	P,1(USER)	;AOBJN PTR
	PUSH	P,[EINTR]	;FAKE RETURN TO REGAIN CONTROL FROM USERCODE
	PUSH	P,(USER)	;USERCODE
	MOVE	USER,GOGTAB
	POPJ	P,		;GO OFF TO RUN HIS STUFF AT INTERRUPT LEVEL

;IT RETURNS HERE BY VIRTUE OF FAKE RETURN WORD
EINTR:	POP	P,40
	HRLZI	16,-15(P)
	BLT	16,15
	MOVE	16,0(P)
	SUB	P,[XWD 23,23]
	JRA	USER,.+1
	JSYS	DEBRK		;BACK TO INTERRUPTED CODE
>;TENX

HERE(IRPSP1)
HERE(IRPSP2)
HERE(IRPSP3)

BEND IRPPKG

ENDCOM(IRP)