31_SCHEDULR 31 SCHEDULR

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0

01557 P

. 01557 53 3'ODO DO .......... .
01560
53500000
01561 ···00703263··'·'······
143tJuOU2
· · · · · ..···························01562
.. ·..· · · · · · · · ·
01563
1430170
01564 .53020 on
01565 15467777
0156 6
5342 a 0 06
01 5tr7""Ot 5000

()

0

1572
1.573

·······1:574·

1: 575
1576
···················.. ··1571"·

15
15
15
15

S WAPER5 3 EQU
"ff'A'

Jf.

···X3 ........ .w·-

Xi

TA I
EN!
RTT· ...

......2, X.3..... .....................................................

ENI
INA,S

·...···6·fj

T11A
TAM

o

SAVE THE BLOCK ADDRESS

4 WORDS
FREEMENFREE'lHE' sLbCR
SHAPER66,X3
RETURN ADDRESS
......

.............................................................................

-10000B
68

0
0

o

0

o

0

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0

........... C)

0

o

q

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Vi.O

PAGE

09/21/74 2259

SCHEOULR

28
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~('"

't. ;'>:' >" ¥ '"

o

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U1571

1592

01572
776i+OOOl
. '01573 '13077'717
0157 1t 14200776
01575
45204000

o

01576
01577

o
o
o
o
o

"'>

.01606
01611
01614
01615

EQU
SHA
APF
"SHACt
ENI

., ...,................ rIA,

1599
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1601
ST AO
·i6Q·2·····
·STAG
1603
ISD
160,4
IJD
.1:S0S· "...................'....... _....... VFD·· ..····
:loOt
TIA
160'7
rAJ . .
'1"6
609
SWAPER54

01(01).4520 TGnU
01601106[HIOGO
01602
02601575 P
oHr03'77T3 tHHJQ
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77

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1598

452050'00'
45206000

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SWAPZP

1593
15·94
1595
1596
1597

12000002

>r'f. ;;'JI.~;;' '1->;- 'f;;'

THIS ROUTINE ISCALLEOWHEN-AUSERFIRST REFFERENCES
A ZEROPAGE. THIS ROUTINE FILLS THE FAGE ~ITH ZEROS
NOT ALLOWING THE USER TO EXAMINE SOME OTHER USERS

1587
1588
·········1589····
1590
01570 P
01570 ...... 53200000.

!Jt.'~ >;'J,< ~J;f.·'1-'J.>:.. "'>tJ.·>;.'1-T>r'f.

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1585
1586

(}

SWAP PROCESSOR

~+~8'

(T~3-

11-

,.

X·2

2

P FLOC+PFW

. · . -'48
7768,X2
v

. . . . . . . . . . . . . . . .. .

CO'"'E+00008 X2
. . GO~E+l(jooa;X2'"

·,PH·.ySIGAL··FAGENUM8ER lOA
POINT PAGE FILE 1 AT THE PAGE
ZERO·AANO"Q
ZERO .. E:.I.G.HI WOEDS..... .....
••• IN 14 CORE CYCI:ES.

CORE + 20008, X2

CGRE+ 30 iiJ 08,X2,
O,X2

o
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.• .•.. 0.1.0 ..... IN.OE:J< ~.

.., .. X.2 ..

10
11
12

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GET VMM

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. A910,tU 5/PSA ~POI NTER ....
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JUMP-IFCRAINPROCEss£rr

FIND USERS HAlTING FOR •••
.... THIS PAGE TGSESWAPPED IN.
CLEAR THE MASS STORAGE WAIT.

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AoeRESS"OF· Bi::.CCK TO FREE""'''''''''·'''''''''''''·''''''

INDICATE 2 HORDS
AIJORESSDF' NEXTZv

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777400JB
25200.LUl2.

.VNt-L E GINTER ,18.alleORE. AOURESS

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v.... ,., .....
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.Mu;:)uMP"I F"NClf·····SY51E M' PtJRE" . eoeE"
PUT PAGE ACCESS POINTER IN Xi
'''G'ETv THE PAGE KUM8ER . " v , ..
PAGE NUMBER IS PUT INTO XJ
. . v. .IND.I. G.A I.E ..P_ UHE. ....P AGE .......v.'v... v............. .
SET UP PAGE ACCESS WORD
USER PURE Ptl,GE
•.·......... uu ....."...". GE·1'" ···VN M..··W6R 8 . . " .........
u..·. . . . . . u. . . . . . . . . . .,............u.............. ............. u. . . . .'. . ,. . ".
SKIP IF USER FAGE
HAKE INTO SYSTE~ PURE PAGE
.. ,.,., ... " "'''''P1rGE'ACCES S W0 R OPO IN TER
NEW PAGETA8L ~ORD IS FORMED IN A

53500000

M

1655

165"6

v

1657

53040000
1'Z730000
01660 P
403U1522 X

· · . ·..,.. ·....··,...... ". . ·£:1-16·61··5·3 02 0022
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1654

.. 1658.

1659
1660

....................

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·1. 6 6·1..............·.......... · . ·....'. . . ·

1662

AQA

.. VE.J.... .. A12.1.D.INI ,A121 Ovvv

EQU
JI.
STA
PAGE
ABL,X3
............. "",,•. ···T H"A· ...• ,"" .......... ·..•.. ·6'·1:,0 e /<'....... , ....... ,"•••••
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Vl.0 09/21/74 2259 PAGE
······OI6E3····403lJ1344·x
"'1663
01664
20200002
..01665 ··53500000

01666 17177600
01667
14401625
016'10"34101626
01671 47103334
01672 1~601046
. . 0:1.67 335udfD 5'0
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,

01675
01676

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01701 34003063 P
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01702 P
14477776
01703340030&0 p.
01704 01003060 P
01782

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29

SCHEOUlR

Sl1AP PROCESSOR

1664
·1665
1666
1667
'168'8'"

VNM POINTER
-

1674
1675

•••• INDICATE SWITCHING
'._,..

TIA
ENI

....................................... · · ..···187·6.. ············ .. ··· ..···· .. ················
·······RTJ .. ·
1677
1678
SWAPER66
:C6TS'" .. ...........
......... ..... EQU
ENA,'S'"
16BO
RAO

1·68·1···

1582

1683

·············1684··
1685

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1669

1670
1671"
1672
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Q.

UPO AlE' LA S T REFFERENCE"rrt-fE

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SWAPER68 EQU

ENA,S

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UJP

-_..

, ....

_.

()

X2

OLD REQUEST 8LOCK ADDRESS
2,X3
ENTER LENGTH OF 4 WORDS
npREEM E:M .. ~""'·~····· ..···~······ ... FREETH E'O lD'REGU ESY-'Sl:OCK-' .........,..,..... . . .

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INDICATE ANOTHER SWAP PROCESSED.

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o

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01713
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VL,Q 09/21/74 2259

54103323
14600000
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14 6U 1672
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P

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51t203323 P

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20002303 P
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20003314 P
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01725

01726
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10003356

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01735
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54703323 P
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17
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16138 ...
1689
1680

03334 0

1691
1692
1693"

1694

1695
······1696
1697
·1698·
1699
1700

'1'701
1702
1703
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. ··1706

30

SCHEDULR
USER SWITCHING
. 'Hc.TIME INiERRupr'fAQuAN1UM IS FINISHED.
RMTIMEUP LOI
RPSAPTR,Xl
POINT TO THE RUNNING USER.
ENA
0
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TIMElEFT,Xl+PSA
SAY THIS USER HAS NO TIME LEFT.
SACH
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ENA
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COME HERE·To·s~nTCHUSERS.
SJ5
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. , ....... , ';JUMP "IF'WEGOTT HE LkST'SWITCHING
AZj,GE····S·WITCHX·······
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LOA
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LD I R PS AP'r R',X2'
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S\UTGHX
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GET THE···N·U·HBER····OF USERS •
LOA
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'A'lJ
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SSH
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SKIP IF SCHEDULING NOT NEEDED
UJP
SCHED
PROCEDE TO 00 CORE SCHEDULING
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LOI
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GET LAST USERtS PSA
......... ISG
1,X3+PSA
SKIP IF WE ARE POINTINGATA PSA.
LOI,I
RPSAPTR,X3+PSA
START THE NEXT IJSER IF NOT.
RMSW3
LOA
IOBOUNO,X3+PSA
EXAMINE ONLY NBrTS IF NEGATED
JUMP IF THIS CSER IS I/O BOUND
•
.. INCREMENT COUNT OF UNBOUND
..........
USERS hE HAVE LeOKED AT.
····2·,X2········
XTEtlP lX3 +PSA

01744

01745
01746

···ENG):

.. 01.753

.. · ·

··MQuAI'nuM··..
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AQJ,GE
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01750

01751
01152

T IMELI::FT, X3+PSJl.

. 'r]'~

p
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X3+PSA
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o
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····S.KIP··IF····THIS·· .. IS·· ·NOT THE FIRST •
REMEMBER HIM IF HE IS.

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JUMP IF ENOUGH TIME LEFT.
.llS E;S.
lOOP THROUGH ALL THE USERS.

o

.. l,.,0 0 KAT JHE,: N.t: XJ

JUMP. IF. ANY USER NOT IoaCUND ..

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.

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C!J

ASSErl3LER/OS3

PAGE

Vl.U 09/21/74 2259

1734

1736
1737

()

PAGE/FILE CORE-BLOCK MANAGEMENT

01754 P
·01754· ..7774000 0··
01755 53020022
01756 30001662 X
. .... 0175? '15 47405 y.
0176U
40003344 P

• ••

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• • • •••• N.W

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".
• ., ...' . . ,,,.,.......,.......... 'rOtE"IS"NCT'RtJ'N'ANO"12'U
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BEFORE RUNNING IDLE.................................................,¥
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SER·····S\tJITCHESOCCURE"o···
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A1·2/·EI NT·· ..... ....
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AGELI MIT

1747

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• • • •. . . . . .

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1735

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Oi

°
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01761
01762
"'0176 3
01764

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47003346
141U1337
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X3
3-24
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·01765..537 G a·u·D.·f)·····
01766 12077752
01767 21101663 X

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01771

01772

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01201772
01002026

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o

01774 15500000
··1l1775 ... ·17·377 Ed) i}.
01776 20301736 X
01777 03302005 P

..·77·00·08,X3··-...

I0i30UNO,X3+PSA

SVAL12
NK6ITS"
S'ifAL12

020'00"
02001
020U2
0200 j '
02004 15

,NE

INQ,S

14

o

02011
02501763 P
020'12····
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D2fJ14
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A 121-0 TNT .....

fCLIST, X3
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02023
02024
02025

360G3
03lHJ2
24301
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34301
Q1QLJ2

02026

147QOOOO

02030

03302011

"02021

U2022

0"

02027

02031

X3+PS
PRT':fP
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SVAL14

ENQ
0
LOA
FPCNT
···AZJ,LT-....S VALTit

ENI

g

UJP.....

1804
nro 5'
18U6
,~

02033

20300000
02034 ....·03302 052"P""
02035
12000001

0'

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.76
PAGE REQ, X3+PSA

14300767 X

.....~.....-....................."

o ;:: UNUSEO PAGE

IDLE,X3+PSA

.SVAL12...

=

3·=· USER IMPURE PAGE.
GET rOBOUND STATUS
JUMP IF NEGATED

o

JUMP IF NOT IN TERMINAL HAlT

o

····\:OOK···AT·TERMINAt···wA..IT . SI·TS···

DEDUCT 5 SEC FOR BEING 1/0 BOUND
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JUMP IF VALUABLE

•

c·o MPUTE

NUMBER OF EMPTY FAGES IN X2
GET START OF Fe LIST
"'-,

o
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GET THE USERS PAGE VALUE
GE.lH1E V.ALUE OF HIS MEMORY.
AOD ONE TO THE CWNERS PAGECNT
UNUSED PAGE HAS NO AGE
NUM8ER OF FREE PAGES
'JUNPIFNOTEI\OUGHFREE PAGES
SAY IDLE GWNES THE PAGE

o

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TH E"NUM 8 ER' OFTO W:;;; VALU E' FILE' CC RE 8 LOCKS . .

1808
........""". . "."...,,. ""1· 8,ln. .
1811

SCVOI

LOA
............ A:Z: d,' I:T"
SHA

FCS,X3
S e V03·. .
1

···N...................~..

GET STATUS
.........;j UN
N·· . . . PROG D4=. .'C;:·C;:nnn.....'. n.n ....n. .
GET RESERVED EIT
pn'IFn"EIO~I

o

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1809

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.........

()

r"=SYSTEN'PUREPAGE .
2:
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DO NOT BILL
FORRIS
PAGESTHE PRIORITY
......................... .

S'JAII

200Q3335

.~2032nl002005

-5000

GELlfl11
,)(2

02016..,........ ......... .
02017
533UO

02020

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······SVA LiZ···

""'02 (J 1: O'S LrOti3346"P

q;

QELAY

··lDA······AGELIMIT··
AI~J,Lr
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1
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02tJ 05 . ···2·[]
02006
03

02007

. ". .·...'..PAGE.... t;J SEAG E'" () (} flE"~f O'''X2:' . . ...............

¥-

TH7T3' "0'1 DO 202.T

START WITH ZERO
NUM8ER OF PAGETABL ENTRIES - 1
GETFAGETA. 8CENTRY" . ...
JUMP IF SYSTE~ PAGE
SAVE V·MMFCINIER
GE T UF PER 3 BIT S
GET LAST REFFERENCEO TIME

~n.·n

............ ·...·..

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(1'...

0'2036'033 J 2051 P

02037

r

1

1
I
I

12077757

0204053500000
02041
17100003

(JJ

02042 20300003
020430510 0002
02044
03302050 P
02045 20300001
02046 301T7777'X
02047 03602051 P

~,

I

Vlo0 09/21/74 2259

.0 20 5 0 .... t 52U 0 001

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02051
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02054 01002033 P
0'205 S'T77 if 0000

()

PAGE

32

AZJ,LT

·T8:1.2

SHA
··TAl·
ANI
LOA

1813
·1814

1815
181 C
n1'Sl?'
1818
1819
1820

1821
1822

1823

1824

····1825
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09/21/74 2259

PAGE

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Vl.0 09/21/74 2259 PAGE 4'3
SCHE DU LR
.. """"', .. "· ..·25T5
2516
SWAP£XIT EQU
~
03055 P
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Vi.O 09/21/74 2259

PAGE

SCHE OU LR

50

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Vl.0 09/21/74 2259 PAGE
·03.172···0:100311T"P··
'2'62'5
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2626
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PCI~TER

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c

SAVE THE ADDRESS OF THE BLOCK
FREE H~LF OF THE BLOCK

SEr·A·=2 POWER INDEX 3
... "'M., •.•• ,._'M"_""'."""""

SKIP IF DONE
RETURN

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03215
03216
03217
03220
03221
03222

V1.1) 09,21/74

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01000000
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03227 47303245 P
03230143 U Ou U 2·
03231
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03234 20003325 P
03235
47303325
0323E40"3[JOOOO
03237
14600001
..03240
341103G EI3.P

03241

03242

225~j

PAGE
2641
2642
2643 .
2E44
2645
2·6·46···
2647
254E
264'!
2650
2651
2652

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52

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03244

2654 .
2655
2656
2658
2659
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2661
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RETURN

ENA
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2664

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35003145 X

14604000

2675

FREE STORAGE PAGE HAS ARRIVED
FR2E PAGE
INDICATE-ONE-KORE AVAILA8LEPAGE

ENA
STA

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2657·

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COMPLETION AOCRESS
START A-P~GE GeMMING IN·

'2QU

2653

14677777 X

U3246
03247
03250

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. RAO
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()

FREE STORAGE ROUTINES
~.

o.oEXPANTION INHIBIT BITo

IMPURE

GETPX3, X3

SAVE RETURN ADDRESS
ASK FOR·A 4WGRD·BLCGK
OF FREE STORAGE
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PUT -IT IN' THE 'PAGE REQUEST8tOC~1{
LINK IN THE PftGE REQUEST BLOCK

···21. X3

Gt.n1E~i

GETPX3

·2,X·3
RMSWAPQ

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1

SHAPeIT

IN 0 IC ATE ONE 1'1 O~E······P·A·GE . REQ·UEST·
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IMMEDIATE RETURN

·Q·COUNl ..

. ,.". FLAGS
Fl:A·G·SM. . . . . ,...,' . . . "..". . ,...".

••• 8E STARTED ..

····Allr;A81 rr,A151 IMPURE

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PS+PPW~;···X2·······

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.. ... RUNNING USER
ARCH

-.RAG£ZX2,X224
2

SAVE~X2

0 DE ST ROY IHEP AGEF ICE'

NUMBER TO Q
MAKE INTO A QUARTER PAGE NUMBER
.'d'~.tPU-1,X2·' ..."_. ··'''·SEARCH·AltUSE RSPAGEFIl:E
PS+PFW,X2
GET QUARTER PAGE NUMBER
7748
REMOVE THE PROTECT 8IT
··PZ PI l 2 - J U MPI F FAG E' I NU Sf' .. . . .. .
JUMP IF MeRE USER PAGES
PZP01,X2
P~AGEZ

1.0

X2

PAGE

RETURN

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LTII'_U

ASSEM9LER/OS3

V1.D

09/21/74 2259

PAGE

53

SCHEOULR

FREE STORAGE ROUTINES

·-··--····--·~·~··--··········--·-····-···-~T~'·~·-..-·.-.-...--.- ...--..-.--~.--.. -.-......- ....--....-.-- ....-.----..-..- -..- .....- ..... --.-.........---.....- .. -....-.--..........-.-......-..-----...----...,..---...- ...692

x.

..--..- ...... -...........-..........................-............. ....... .•..... .............. ""-" .-...... "- _..............-.-....................................._.......~:,:¥:.;.t.~~. !1:...'f:..>t.X...lt.*.. ~<.*- .*-.Jf. 3t..'J:. ..~.*-. .:,':. 't.!f:.'f:..'B:.. 't.'t.'t_'k..:'it.*!f:..'i.!f:3J:. .."i:.'>I: . X_¥.X..."f:..¥..!1!!:. ..

Ill>.

~

---.-.-.zCD

...•- ............---..:-.....,..- .......- ..-..--......--....-........--......-......,.. - ...---....-.-..---.....--.-.--.... --...- ......

x..'f.?t...T.!f..iIJ._*-?t,.." ..'1:..~._'f..'f._'f._'f..>f..*.::!f.Jf. *:. ¥:lI'..'k...¥..,"_'J:..'1:.'1:_'k..'k...-...- ..........

2694
•
.
.. •
2695·
ROUTINE TO RETURN A SLOCK OF MEMORY TO THE FREE STORAGE LIST
•
"-~-..- ..~,~....- ..•. - •.-....-.-.•..----.. ~-.-...--.-...·-···-··-············--·..··········-··-~'···.. 2·6·9·6·--..-·····-.·-·,··--· ..·-,..····---t;A·l=c·... W-J:·T·H·..r·HE-·-B·A·3"E:-·1'·W·O~·t·OG--·O·F····T·H··E·-e-cO·eK-S·iTE--"IN_"··I-NfJ·E"'~··-3"-~·--.v.·-···-·..·---·····-·~····----··-·---··· II
2697
"ITHE ADDRESS OF THE BLOCK IN THE A REGISTER AND EXECUTE AN
..
()
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B. LJ ......____......._......__....E..RE.E. M.~.t1 ......_...._.................... --..---........RE. IJ.J.R.N .....lH.E. . . . !lLCCK...Q.F . ..t1.E.ttQ.RY.._ ........__..__........ : ............ --.... -.. .
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..:. . .- . . . . . . . . -.. . . . . .

C1

03264
77730000
2703
VFD
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