StarInfo/Fletcher/!Setup/Files/Disc1/Program/NetGame/!NetGame/BasicLib/HeapLib

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This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.

Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.

Tape/disk:	Home » Recent acquisitions » Acorn ADFS disks » adfs_AcornUser_199801_2.adf » Regulars2
Filename:	StarInfo/Fletcher/!Setup/Files/Disc1/Program/NetGame/!NetGame/BasicLib/HeapLib
Read OK:	✔
File size:	149B bytes
Load address:	0000
Exec address:	0000

File contents

   10REM >HeapLib
   20REM LEN Justin Fletcher
   30REM Version : 1.04 (18 Jan 1997)
   40REM Heap control library
   50REM Load this after WimpLib to replace the claim/release calls
   60:
   70REM PROCinitheap : Initialise the Heap manager
   80DEFPROCinitheap
   90SYS "OS_ReadMemMapInfo" TO h_page
  100h_size=h_page:h_start=HIMEM
  110h_rsize=2:REM Space 2 relocatable entries
  120h_full=0:REM current number of entries
  130SYS "Wimp_SlotSize",-1,-1 TO h_appbase
  140SYS "Wimp_SlotSize",h_appbase+h_size,-1
  150SYS "OS_Heap",0,h_start,,h_size
  160SYS "OS_Heap",2,h_start,,4*h_rsize+4 TO ,,h_reloc
  170h_reloc+=4:h_reloc!-4=&434F4C52
  180FORI=0TO h_rsize*4-4 STEP4:h_reloc!I=-1:NEXT
  190ENDPROC
  200:
  210REM PROCheap_free : Return amount of free space in heap
  220DEFPROCheap_free(RETURN max,RETURN free)
  230SYS "OS_Heap",1,h_start TO ,,,free:max=h_size
  240ENDPROC
  250:
  260REM FNenlargeheap : Tries to increase heap size, TRUE if ok
  270DEFFNenlargeheap
  280LOCAL ok,new
  290SYS "XWimp_SlotSize",h_appbase+h_size+h_page,-1 TO new;ok
  300IF (ok AND 1)=1 OR new=h_appbase+h_size THEN=FALSE
  310h_size+=h_page:SYS "OS_Heap",5,h_start,,h_page
  320=TRUE
  330:
  340REM FNclaimRMA : Claim an RMA block (in replacement of WimpLib FN)
  350DEFFNclaimRMA(length%)
  360LOCAL flags:IF length%<1THENERROR &802,"Cannot claim negative RMA"
  370SYS "XOS_Module",6,,,length% TO ,,area%;flags
  380IF (flags AND1)>0 THENarea%=-1
  390=area%
  400:
  410REM FNclaim : Claim a block from the heap
  420REM use -ve to claim a relocatable block
  430DEFFNclaim(size)
  440LOCAL loc,big,ok,r:ok=TRUE
  450IF size<0 THENr=TRUE:size=ABS(size)+4 ELSEr=FALSE
  460SYS "OS_Heap",1,h_start TO ,,big
  470WHILE size>big AND ok
  480 ok=FNenlargeheap:SYS "OS_Heap",1,h_start TO ,,big
  490ENDWHILE
  500IF NOT ok THEN=-1
  510SYS "XOS_Heap",2,h_start,,size TO ,,loc;ok
  520IF (ok AND1)=1 THEN=-1
  530IF r THEN
  540 !loc=&434F4C52:loc+=4
  550 IF h_full=h_rsize THEN
  560  h_reloc=FNextend(h_reloc,4*16):h_rsize+=16
  570  IF(h_reloc AND1)=0 THENFORr=h_full TO h_rsize-1:h_reloc!(r*4)=-1:NEXT ELSEh_reloc-=1:SYS "OS_Heap",3,h_start,loc-4:=-1
  580 ENDIF
  590 h_reloc!(h_full*4)=loc:h_full+=1
  600ENDIF
  610=loc
  620:
  630REM PROCrelease : release a heap block
  640DEFPROCrelease(RETURN loc)
  650LOCAL full
  660IF loc>0 THEN
  670 IF loc>h_start+h_size THEN
  680  SYS "OS_Module",7,,loc
  690 ELSE
  700  IF loc!-4=&434F4C52 THEN
  710   full=0
  720   WHILE full<h_full AND h_reloc!(full*4)<>loc:full+=1:ENDWHILE
  730   IF full=h_full THENERROR &802,"Attempt to release unknown relocatable heap block"
  740   loc-=4:h_full-=1:h_reloc!(full*4)=h_reloc!(h_full*4)
  750   h_reloc!(h_full*4)=-1
  760  ENDIF
  770  SYS "OS_Heap",3,h_start,loc
  780 ENDIF
  790 loc=-1
  800ENDIF
  810ENDPROC
  820:
  830REM FNextend : Change size of a relocatable block
  840REM returns with bit 1 set if error (should be word aligned
  850REM otherwise)
  860DEFFNextend(loc,size)
  870LOCAL new,ok,full:full=FALSE
  880IF loc!-4<>&434F4C52 THENERROR &802,"Attempt to extend non-relocatable heap block"
  890REPEAT
  900 SYS "XOS_Heap",4,h_start,loc-4,size TO k,,new;ok
  910 IF (ok AND1)=1 THENfull=NOT FNenlargeheap
  920UNTIL (ok AND1)=0 OR full
  930IF full THEN
  940 new=loc-3
  950ELSE
  960 IF loc<>h_reloc THEN
  970  full=0
  980  WHILE full<h_full AND h_reloc!(full*4)<>loc:full+=1:ENDWHILE
  990  IF full=h_full THENERROR &802,"Unknown relocatable heap block"
 1000  h_reloc!(full*4)=new+4
 1010 ENDIF
 1020ENDIF
 1030=new+4
 1040:
 1050REM PROClockblock   : Prevent a block from being moved
 1060REM PROCunlockblock : Enable a block to be relocated
 1070DEFPROClockblock(loc)
 1080IF loc!-4<>&434F4C52 THENERROR &802,"Attempt to lock non-relocatable heap block" ELSEloc!-4=&4B434F4C
 1090ENDPROC
 1100DEFPROCunlockblock(loc)
 1110IF loc!-4<>&4B434F4C THENERROR &802,"Attempt to unlock non-relocatable heap block" ELSEloc!-4=&434F4C52
 1120ENDPROC
 1130:
 1140REM PROCheap_rsort : sort relocatable heap table
 1150DEFPROCheap_rsort:SYS "OS_HeapSort",h_rsize,h_reloc,0:ENDPROC
 1160:
 1170REM PROCheap_garbage : perform garbage collection on heap
 1180REM will call PROCheap_relocate(block,size) for each to be
 1190REM moved, so program must include a routine to update pointers
 1200DEFPROCheap_garbage
 1210LOCAL h_rblk,block,largest,ok,maxfree,b,
 1220SYS "OS_Heap",2,h_start,,8+h_full*4 TO ,,block;ok
 1230IF (ok AND1)=0 THEN
 1240 IF block>h_reloc THEN
 1250  SYS "OS_Heap",3,h_start,block
 1260 ELSE
 1270  h_rsize=h_full+1:!block=&434F4C52:block+=4
 1280  FOR b=0 TO h_full*4 STEP 4:block!b=h_reloc!b:NEXT
 1290  SYS "OS_Heap",3,h_start,h_reloc-4:h_reloc=block
 1300 ENDIF
 1310ENDIF
 1320PROCheap_rsort
 1330SYS "Hourglass_On"
 1340IF h_full>0 THEN
 1350 SYS "OS_Heap",1,h_start TO ,,largest
 1360 FORh_rblk=h_full-1 TO 0 STEP-1
 1370  block=h_reloc!(h_rblk*4)
 1380  IF block!-4<>&4B434F4C THEN
 1390   SYS "OS_Heap",6,h_start,block-4 TO ,,,size
 1400   ok=FALSE
 1410   REPEAT
 1420    IF size<largest THEN
 1430     PROCheap_relocate(block,size-8):SYS "OS_Heap",1,h_start TO ,,largest,maxfree:IF h_reloc!(h_rblk*4)=block THENok=TRUE ELSEblock=h_reloc!(h_rblk*4)
 1440    ELSE
 1450     ok=TRUE
 1460    ENDIF
 1470   UNTIL ok
 1480  ENDIF
 1490 NEXT
 1500ENDIF
 1510SYS "Hourglass_Off"
 1520PROCheap_reduce
 1530ENDPROC
 1540:
 1550REM PROCheap_reduce : reduce the heap to it's smallest size
 1560DEFPROCheap_reduce
 1570LOCAL maxfree,ok
 1580maxfree=h_size-h_start!8
 1590WHILE maxfree>h_page
 1600 SYS "XOS_Heap",5,h_start,,-h_page TO ;ok
 1610 IF (ok AND 1)=1 THENmaxfree=0 ELSEh_size-=h_page:maxfree-=h_page
 1620 SYS "XWimp_SlotSize",h_appbase+h_size,-1 TO ;ok
 1630ENDWHILE
 1640ENDPROC
 1650:
 1660REM PROCheap_oktomove : move a relocatable heap block
 1670REM Only called within PROCheap_garbage, from PROCheap_relocate
 1680DEFPROCheap_oktomove(RETURN block,size)
 1690LOCAL loc,b
 1700SYS "OS_Heap",2,h_start,,size+4 TO ,,loc
 1710IF loc>block THENSYS "OS_Heap",3,h_start,loc:ENDPROC
 1720!loc=&434F4C52:loc+=4
 1730FOR b=0 TO size-4 STEP 4:loc!b=block!b:NEXT
 1740SYS "OS_Heap",3,h_start,block-4:block=loc:h_reloc!(h_rblk*4)=loc
 1750ENDPROC
 1760:
 1770REM FNstrdup : Duplicate a string
 1780DEFFNstrdup(a$):LOCAL p%:p%=FNclaim(LEN(a$)+1)
 1790IF p%<>-1 THEN$(p%)=a$
 1800=p%


� >HeapLib
� � Justin Fletcher
"� Version : 1.04 (18 Jan 1997)
(� Heap control library
2@� Load this after WimpLib to replace the claim/release calls
<:
F0� PROCinitheap : Initialise the Heap manager
P��initheap
Z#ș "OS_ReadMemMapInfo" � h_page
dh_size=h_page:h_start=�
n+h_rsize=2:� Space 2 relocatable entries
x(h_full=0:� current number of entries
�(ș "Wimp_SlotSize",-1,-1 � h_appbase
�*ș "Wimp_SlotSize",h_appbase+h_size,-1
�"ș "OS_Heap",0,h_start,,h_size
�3ș "OS_Heap",2,h_start,,4*h_rsize+4 � ,,h_reloc
�#h_reloc+=4:h_reloc!-4=&434F4C52
�'�I=0� h_rsize*4-4 �4:h_reloc!I=-1:�
��
�:
�9� PROCheap_free : Return amount of free space in heap
���heap_free(� max,� free)
�/ș "OS_Heap",1,h_start � ,,,free:max=h_size
��
�:
=� FNenlargeheap : Tries to increase heap size, TRUE if ok
ݤenlargeheap
� ok,new
";ș "XWimp_SlotSize",h_appbase+h_size+h_page,-1 � new;ok
,+� (ok � 1)=1 � new=h_appbase+h_size �=�
61h_size+=h_page:ș "OS_Heap",5,h_start,,h_page
@=�
J:
TD� FNclaimRMA : Claim an RMA block (in replacement of WimpLib FN)
^ݤclaimRMA(length%)
h:� flags:� length%<1�� &802,"Cannot claim negative RMA"
r/ș "XOS_Module",6,,,length% � ,,area%;flags
|� (flags �1)>0 �area%=-1
�
=area%
�:
�+� FNclaim : Claim a block from the heap
�*� use -ve to claim a relocatable block
�ݤclaim(size)
�� loc,big,ok,r:ok=�
�%� size<0 �r=�:size=�(size)+4 �r=�
�"ș "OS_Heap",1,h_start � ,,big
�ȕ size>big � ok
�3 ok=�enlargeheap:ș "OS_Heap",1,h_start � ,,big
��
�� � ok �=-1
�,ș "XOS_Heap",2,h_start,,size � ,,loc;ok
� (ok �1)=1 �=-1
	� r �
 !loc=&434F4C52:loc+=4
& � h_full=h_rsize �
0/  h_reloc=�extend(h_reloc,4*16):h_rsize+=16
:l  �(h_reloc �1)=0 ��r=h_full � h_rsize-1:h_reloc!(r*4)=-1:� �h_reloc-=1:ș "OS_Heap",3,h_start,loc-4:=-1
D �
N% h_reloc!(h_full*4)=loc:h_full+=1
X�
b=loc
l:
v(� PROCrelease : release a heap block
���release(� loc)
�
� full
�
� loc>0 �
� � loc>h_start+h_size �
�  ș "OS_Module",7,,loc
� �
�  � loc!-4=&434F4C52 �
�
   full=0
�7   ȕ full<h_full � h_reloc!(full*4)<>loc:full+=1:�
�P   � full=h_full �� &802,"Attempt to release unknown relocatable heap block"
�;   loc-=4:h_full-=1:h_reloc!(full*4)=h_reloc!(h_full*4)
�   h_reloc!(h_full*4)=-1
�  �
   ș "OS_Heap",3,h_start,loc
 �
 loc=-1
 �
*�
4:
>3� FNextend : Change size of a relocatable block
H=� returns with bit 1 set if error (should be word aligned
R� otherwise)
\ݤextend(loc,size)
f� new,ok,full:full=�
pN� loc!-4<>&434F4C52 �� &802,"Attempt to extend non-relocatable heap block"
z�
�3 ș "XOS_Heap",4,h_start,loc-4,size � k,,new;ok
�% � (ok �1)=1 �full=� �enlargeheap
�� (ok �1)=0 � full
�� full �
� new=loc-3
��
� � loc<>h_reloc �
�  full=0
�6  ȕ full<h_full � h_reloc!(full*4)<>loc:full+=1:�
�<  � full=h_full �� &802,"Unknown relocatable heap block"
�  h_reloc!(full*4)=new+4
� �
��

=new+4
:
8� PROClockblock   : Prevent a block from being moved
$6� PROCunlockblock : Enable a block to be relocated
.��lockblock(loc)
8^� loc!-4<>&434F4C52 �� &802,"Attempt to lock non-relocatable heap block" �loc!-4=&4B434F4C
B�
L��unlockblock(loc)
V`� loc!-4<>&4B434F4C �� &802,"Attempt to unlock non-relocatable heap block" �loc!-4=&434F4C52
`�
j:
t2� PROCheap_rsort : sort relocatable heap table
~5��heap_rsort:ș "OS_HeapSort",h_rsize,h_reloc,0:�
�:
�;� PROCheap_garbage : perform garbage collection on heap
�<� will call PROCheap_relocate(block,size) for each to be
�A� moved, so program must include a routine to update pointers
���heap_garbage
�(� h_rblk,block,largest,ok,maxfree,b,
�3ș "OS_Heap",2,h_start,,8+h_full*4 � ,,block;ok
�� (ok �1)=0 �
� � block>h_reloc �
�"  ș "OS_Heap",3,h_start,block
� �
�0  h_rsize=h_full+1:!block=&434F4C52:block+=4
.  � b=0 � h_full*4 � 4:block!b=h_reloc!b:�

4  ș "OS_Heap",3,h_start,h_reloc-4:h_reloc=block
 �
�
(�heap_rsort
2ș "Hourglass_On"
<� h_full>0 �
F' ș "OS_Heap",1,h_start � ,,largest
P �h_rblk=h_full-1 � 0 �-1
Z  block=h_reloc!(h_rblk*4)
d  � block!-4<>&4B434F4C �
n/   ș "OS_Heap",6,h_start,block-4 � ,,,size
x   ok=�
�   �
�    � size<largest �
��     �heap_relocate(block,size-8):ș "OS_Heap",1,h_start � ,,largest,maxfree:� h_reloc!(h_rblk*4)=block �ok=� �block=h_reloc!(h_rblk*4)
�	    �
�
     ok=�
�	    �
�   � ok
�  �
� �
��
�ș "Hourglass_Off"
��heap_reduce
��
:
=� PROCheap_reduce : reduce the heap to it's smallest size
��heap_reduce
"� maxfree,ok
,maxfree=h_size-h_start!8
6ȕ maxfree>h_page
@+ ș "XOS_Heap",5,h_start,,-h_page � ;ok
J< � (ok � 1)=1 �maxfree=0 �h_size-=h_page:maxfree-=h_page
T2 ș "XWimp_SlotSize",h_appbase+h_size,-1 � ;ok
^�
h�
r:
|7� PROCheap_oktomove : move a relocatable heap block
�A� Only called within PROCheap_garbage, from PROCheap_relocate
�!��heap_oktomove(� block,size)
�� loc,b
�*ș "OS_Heap",2,h_start,,size+4 � ,,loc
�-� loc>block �ș "OS_Heap",3,h_start,loc:�
�!loc=&434F4C52:loc+=4
�&� b=0 � size-4 � 4:loc!b=block!b:�
�Cș "OS_Heap",3,h_start,block-4:block=loc:h_reloc!(h_rblk*4)=loc
��
�:
�#� FNstrdup : Duplicate a string
�(ݤstrdup(a$):� p%:p%=�claim(�(a$)+1)
�� p%<>-1 �$(p%)=a$
=p%
�

00000000  0d 00 0a 0e f4 20 3e 48  65 61 70 4c 69 62 0d 00  |..... >HeapLib..|
00000010  14 17 f4 20 a9 20 4a 75  73 74 69 6e 20 46 6c 65  |... . Justin Fle|
00000020  74 63 68 65 72 0d 00 1e  22 f4 20 56 65 72 73 69  |tcher...". Versi|
00000030  6f 6e 20 3a 20 31 2e 30  34 20 28 31 38 20 4a 61  |on : 1.04 (18 Ja|
00000040  6e 20 31 39 39 37 29 0d  00 28 1a f4 20 48 65 61  |n 1997)..(.. Hea|
00000050  70 20 63 6f 6e 74 72 6f  6c 20 6c 69 62 72 61 72  |p control librar|
00000060  79 0d 00 32 40 f4 20 4c  6f 61 64 20 74 68 69 73  |y..2@. Load this|
00000070  20 61 66 74 65 72 20 57  69 6d 70 4c 69 62 20 74  | after WimpLib t|
00000080  6f 20 72 65 70 6c 61 63  65 20 74 68 65 20 63 6c  |o replace the cl|
00000090  61 69 6d 2f 72 65 6c 65  61 73 65 20 63 61 6c 6c  |aim/release call|
000000a0  73 0d 00 3c 05 3a 0d 00  46 30 f4 20 50 52 4f 43  |s..<.:..F0. PROC|
000000b0  69 6e 69 74 68 65 61 70  20 3a 20 49 6e 69 74 69  |initheap : Initi|
000000c0  61 6c 69 73 65 20 74 68  65 20 48 65 61 70 20 6d  |alise the Heap m|
000000d0  61 6e 61 67 65 72 0d 00  50 0e dd f2 69 6e 69 74  |anager..P...init|
000000e0  68 65 61 70 0d 00 5a 23  c8 99 20 22 4f 53 5f 52  |heap..Z#.. "OS_R|
000000f0  65 61 64 4d 65 6d 4d 61  70 49 6e 66 6f 22 20 b8  |eadMemMapInfo" .|
00000100  20 68 5f 70 61 67 65 0d  00 64 1b 68 5f 73 69 7a  | h_page..d.h_siz|
00000110  65 3d 68 5f 70 61 67 65  3a 68 5f 73 74 61 72 74  |e=h_page:h_start|
00000120  3d 93 0d 00 6e 2b 68 5f  72 73 69 7a 65 3d 32 3a  |=...n+h_rsize=2:|
00000130  f4 20 53 70 61 63 65 20  32 20 72 65 6c 6f 63 61  |. Space 2 reloca|
00000140  74 61 62 6c 65 20 65 6e  74 72 69 65 73 0d 00 78  |table entries..x|
00000150  28 68 5f 66 75 6c 6c 3d  30 3a f4 20 63 75 72 72  |(h_full=0:. curr|
00000160  65 6e 74 20 6e 75 6d 62  65 72 20 6f 66 20 65 6e  |ent number of en|
00000170  74 72 69 65 73 0d 00 82  28 c8 99 20 22 57 69 6d  |tries...(.. "Wim|
00000180  70 5f 53 6c 6f 74 53 69  7a 65 22 2c 2d 31 2c 2d  |p_SlotSize",-1,-|
00000190  31 20 b8 20 68 5f 61 70  70 62 61 73 65 0d 00 8c  |1 . h_appbase...|
000001a0  2a c8 99 20 22 57 69 6d  70 5f 53 6c 6f 74 53 69  |*.. "Wimp_SlotSi|
000001b0  7a 65 22 2c 68 5f 61 70  70 62 61 73 65 2b 68 5f  |ze",h_appbase+h_|
000001c0  73 69 7a 65 2c 2d 31 0d  00 96 22 c8 99 20 22 4f  |size,-1...".. "O|
000001d0  53 5f 48 65 61 70 22 2c  30 2c 68 5f 73 74 61 72  |S_Heap",0,h_star|
000001e0  74 2c 2c 68 5f 73 69 7a  65 0d 00 a0 33 c8 99 20  |t,,h_size...3.. |
000001f0  22 4f 53 5f 48 65 61 70  22 2c 32 2c 68 5f 73 74  |"OS_Heap",2,h_st|
00000200  61 72 74 2c 2c 34 2a 68  5f 72 73 69 7a 65 2b 34  |art,,4*h_rsize+4|
00000210  20 b8 20 2c 2c 68 5f 72  65 6c 6f 63 0d 00 aa 23  | . ,,h_reloc...#|
00000220  68 5f 72 65 6c 6f 63 2b  3d 34 3a 68 5f 72 65 6c  |h_reloc+=4:h_rel|
00000230  6f 63 21 2d 34 3d 26 34  33 34 46 34 43 35 32 0d  |oc!-4=&434F4C52.|
00000240  00 b4 27 e3 49 3d 30 b8  20 68 5f 72 73 69 7a 65  |..'.I=0. h_rsize|
00000250  2a 34 2d 34 20 88 34 3a  68 5f 72 65 6c 6f 63 21  |*4-4 .4:h_reloc!|
00000260  49 3d 2d 31 3a ed 0d 00  be 05 e1 0d 00 c8 05 3a  |I=-1:..........:|
00000270  0d 00 d2 39 f4 20 50 52  4f 43 68 65 61 70 5f 66  |...9. PROCheap_f|
00000280  72 65 65 20 3a 20 52 65  74 75 72 6e 20 61 6d 6f  |ree : Return amo|
00000290  75 6e 74 20 6f 66 20 66  72 65 65 20 73 70 61 63  |unt of free spac|
000002a0  65 20 69 6e 20 68 65 61  70 0d 00 dc 1d dd f2 68  |e in heap......h|
000002b0  65 61 70 5f 66 72 65 65  28 f8 20 6d 61 78 2c f8  |eap_free(. max,.|
000002c0  20 66 72 65 65 29 0d 00  e6 2f c8 99 20 22 4f 53  | free).../.. "OS|
000002d0  5f 48 65 61 70 22 2c 31  2c 68 5f 73 74 61 72 74  |_Heap",1,h_start|
000002e0  20 b8 20 2c 2c 2c 66 72  65 65 3a 6d 61 78 3d 68  | . ,,,free:max=h|
000002f0  5f 73 69 7a 65 0d 00 f0  05 e1 0d 00 fa 05 3a 0d  |_size.........:.|
00000300  01 04 3d f4 20 46 4e 65  6e 6c 61 72 67 65 68 65  |..=. FNenlargehe|
00000310  61 70 20 3a 20 54 72 69  65 73 20 74 6f 20 69 6e  |ap : Tries to in|
00000320  63 72 65 61 73 65 20 68  65 61 70 20 73 69 7a 65  |crease heap size|
00000330  2c 20 54 52 55 45 20 69  66 20 6f 6b 0d 01 0e 11  |, TRUE if ok....|
00000340  dd a4 65 6e 6c 61 72 67  65 68 65 61 70 0d 01 18  |..enlargeheap...|
00000350  0c ea 20 6f 6b 2c 6e 65  77 0d 01 22 3b c8 99 20  |.. ok,new..";.. |
00000360  22 58 57 69 6d 70 5f 53  6c 6f 74 53 69 7a 65 22  |"XWimp_SlotSize"|
00000370  2c 68 5f 61 70 70 62 61  73 65 2b 68 5f 73 69 7a  |,h_appbase+h_siz|
00000380  65 2b 68 5f 70 61 67 65  2c 2d 31 20 b8 20 6e 65  |e+h_page,-1 . ne|
00000390  77 3b 6f 6b 0d 01 2c 2b  e7 20 28 6f 6b 20 80 20  |w;ok..,+. (ok . |
000003a0  31 29 3d 31 20 84 20 6e  65 77 3d 68 5f 61 70 70  |1)=1 . new=h_app|
000003b0  62 61 73 65 2b 68 5f 73  69 7a 65 20 8c 3d a3 0d  |base+h_size .=..|
000003c0  01 36 31 68 5f 73 69 7a  65 2b 3d 68 5f 70 61 67  |.61h_size+=h_pag|
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0000149b

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