Home » Archimedes archive » Acorn User » AU 1995-04.adf » !StarInfo_StarInfo » Viking/Hneftafl

Viking/Hneftafl

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.

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Tape/disk: Home » Archimedes archive » Acorn User » AU 1995-04.adf » !StarInfo_StarInfo
Filename: Viking/Hneftafl
Read OK:
File size: 1E8B bytes
Load address: 0000
Exec address: 0000
File contents
   10REM >Hneftafl - a game for Vikings
   20REM  By Dave Lawrence, 01Feb95
   30REM  Based on rules from Jan Af Geijerstam uploaded to Arcade BB
   40
   50ON ERROR ERROR EXT ERR,REPORT$+" at line "+STR$ERL:END
   60PROCmode
   70PROCinit
   80PROCpalette
   90PROCsprites
  100REPEAT
  110 PROCnewgame
  120 MOUSE ON
  130 REPEAT
  140  IF winner<0 PRINT TAB(0,0);LEFT$(p$(player)+STRING$(8," "),8)'"to play"
  150  move$=FNplayer(player)
  160  CASE LEFT$(move$,1) OF
  170   WHEN "M":
  180    move$(move)=move$
  190    move+=1:IF move>max_moves move=0
  200    last_move=move
  210    IF last_move=first_move first_move+=1:IF first_move>max_moves first_move=0
  220    player=1-player
  230   WHEN "U":
  240    move-=1
  250    IF move<0 move+=max_moves
  260    player=FNundo(move$(move))
  270    PROCwinner(-1)
  280   WHEN "R":
  290    player=FNredo(move$(move))
  300    move+=1
  310    IF move>max_moves move=0
  320   WHEN "P":
  330    player=1-player
  340   WHEN "Q":
  350    restart=TRUE
  360  ENDCASE
  370   
  380 UNTIL restart
  390UNTIL FALSE
  400END
  410
  420DEF PROCinit
  430max_moves=100
  440DIM board(11,11),state(11,11),t(4,3),button(1),dx(3),dy(3),move$(max_moves),p$(1)
  450spop=FNswi("OS_SpriteOp")
  460button()=4,1
  470board()=-1
  480dx()=0,1,0,-1
  490dy()=1,0,-1,0
  500p$()="Swedish","Moskovit"
  510FOR y=1 TO 9
  520 READ a$
  530 FOR x=1 TO 9
  540  CASE MID$(a$,x,1) OF
  550   WHEN "." : z=0
  560   WHEN "S" : z=1
  570   WHEN "X" : z=2
  580   WHEN "M" : z=3
  590   OTHERWISE: ERROR 1,"Bad string"
  600  ENDCASE
  610  board(x,y)=z
  620 NEXT
  630NEXT
  640FOR b=0 TO 3
  650 FOR s=0 TO 4
  660  READ t(s,b)
  670 NEXT
  680NEXT
  690ENDPROC
  700:
  710DATA ...MMM...
  720DATA ....M....
  730DATA ....S....
  740DATA M...S...M
  750DATA MMSSXSSMM
  760DATA M...S...M
  770DATA ....S....
  780DATA ....M....
  790DATA ...MMM...
  800:
  810DATA 0, 3, 4, 6, 6
  820DATA 0, 3, 4, 6, 6
  830DATA 1,-1, 5,-1,-1
  840DATA 2,-1,-1, 7, 7
  850:
  860DEF PROCpalette
  870COLOUR  0,&00,&00,&00 : REM fg .
  880COLOUR  1,&A0,&A0,&A0 : REM fg S
  890COLOUR  2,&80,&80,&80 : REM fg X
  900COLOUR  3,&D0,&00,&00 : REM fg M
  910COLOUR  4,&D0,&00,&00 : REM fg M (out)
  920COLOUR  7,&FF,&FF,&FF
  930COLOUR  8,&00,&00,&00 : REM bg .
  940COLOUR  9,&00,&00,&00 : REM bg S
  950COLOUR 10,&40,&40,&40 : REM bg X
  960COLOUR 11,&40,&00,&00 : REM bg M
  970COLOUR 12,&00,&00,&00 : REM bg M (out) N/A
  980COLOUR 15,&20,&20,&20
  990ENDPROC
 1000
 1010DEF PROCnewgame
 1020state()=board()
 1030player=0
 1040PROCwinner(-1)
 1050FOR y=1 TO 9
 1060 FOR x=1 TO 9
 1070  PROCsquare(x,y)
 1080 NEXT
 1090NEXT
 1100move=0
 1110last_move=0
 1120first_move=0
 1130restart=FALSE
 1140ENDPROC
 1150:
 1160DEF PROCwinner(w)
 1170winner=w
 1180PRINT TAB(0,0);
 1190IF w=-1 THEN
 1200 PRINT SPCLENp$(1)'SPCLENp$(1)
 1210ELSE
 1220 PRINT p$(winner)'"wins!  "
 1230ENDIF
 1240ENDPROC
 1250:
 1260DEF PROCsquare(x,y)
 1270SYS spop,&122,sprites,STR$t(state(x,y),board(x,y)),xorg+(x-1)*size,yorg+(y-1)*size
 1280ENDPROC
 1290:
 1300DEF PROCtile(x,y,s,b)
 1310IF s>=0 t=t(s,b) ELSE t=5+t(-s,b)
 1320SYS spop,&122,sprites,STR$t,xorg+(x-1)*size,yorg+(y-1)*size
 1330ENDPROC
 1340:
 1350DEF FNkey
 1360k$=INKEY$0
 1370IF k$>="a" AND k$<="z" k$=CHR$(ASCk$-32)
 1380IF k$="P" THEN =k$
 1390IF k$="Q" THEN =k$
 1400IF k$="U" AND move<>first_move THEN =k$
 1410IF k$="R" AND move<>last_move THEN =k$
 1420=""
 1430:
 1440DEF FNplayer(p)
 1460REPEAT
 1470 REPEAT
 1480  REPEAT
 1490   MOUSE x,y,z
 1520   k$=FNkey
 1530   IF k$<>"" THEN =k$
 1540  UNTIL z<>0
 1550  x1=((x-xorg) DIV size)+1
 1560  y1=((y-yorg) DIV size)+1
 1570 UNTIL FNstart_ok(x1,y1,p)
 1590 PROCtile(x1,y1,-state(x1,y1),board(x1,y1))
 1600 ox=x1
 1610 oy=y1
 1620 REPEAT
 1630  MOUSE x,y,z
 1660  k$=FNkey
 1670  IF k$<>"" THEN
 1680   PROCsquare(ox,oy)
 1690   PROCsquare(x1,y1)
 1700   =k$
 1710  ENDIF
 1720  x2=((x-xorg) DIV size)+1
 1730  y2=((y-yorg) DIV size)+1
 1740  IF FNend_ok(x2,y2, x1,y1,p) THEN
 1750   IF x2<>ox OR y2<>oy THEN
 1760    PROCtile(ox,oy,0,board(ox,oy))
 1770    PROCtile(x2,y2,-state(x1,y1),board(x2,y2))
 1780    ox=x2
 1790    oy=y2
 1800   ENDIF
 1810  ENDIF
 1820 UNTIL z=0
 1821 x2=ox:y2=oy
 1840 IF x2=x1 AND y2=y1 PROCsquare(x1,y1)
 1850UNTIL x2<>x1 OR y2<>y1
 1860m$=STR$x1+STR$y1+STR$state(x1,y1)+STR$x2+STR$y2+STR$state(x2,y2)
 1870PROCmove(x1,y1,x2,y2)
 1880m$+=FNtake(x2,y2)
 1890="M"+STR$p+m$
 1900:
 1910DEF FNstart_ok(sx,sy,p)
 1920REM cannot continue playing if already won...
 1930IF winner<>-1 THEN =FALSE
 1940REM no squares off board
 1950IF sx<1 OR sy<1 OR sx>9 OR sy>9 THEN =FALSE
 1960ss=state(sx,sy)
 1970REM swedish pieces = 1 and 2
 1980IF (p=0 AND (ss=1 OR ss=2)) THEN =TRUE
 1990REM moskovit pieces = (3 and 4)
 2000IF (p=1 AND (ss=3 OR ss=4)) THEN =TRUE
 2010=FALSE
 2020:
 2030DEF FNend_ok(ex,ey, sx,sy,p)
 2040REM not allowed off board...
 2050IF ex<1 OR ey<1 OR ex>9 OR ey>9 THEN =FALSE
 2060ss=state(sx,sy)
 2070es=state(ex,ey)
 2080eb=board(ex,ey)
 2090REM is allowed back to start square...
 2100IF ex=sx AND ey=sy THEN =TRUE
 2110REM not allowed off vertical or horizontal...
 2120IF ex<>sx AND ey<>sy THEN =FALSE
 2130REM check each square in move...
 2140xx=sx:yy=sy:zz=ss
 2150REPEAT
 2160 xx+=SGN(ex-sx) 
 2170 yy+=SGN(ey-sy)
 2180 REM squares must be empty, not castle and not camp unless piece moved from camp
 2190 no=(state(xx,yy)<>0 OR board(xx,yy)=2 OR (board(xx,yy)=3 AND zz<>3))
 2200 IF zz=3 AND board(xx,yy)<>3 zz=4
 2210UNTIL xx=ex AND yy=ey OR no
 2220IF no THEN =FALSE
 2230REM cannot end up on castle or camp square [unless a camped M]...
 2240REMIF eb=2 OR (eb=3 AND ss<>3) THEN =FALSE
 2250=TRUE
 2260:
 2270DEF PROCmove(sx,sy,ex,ey)
 2280state(ex,ey)=state(sx,sy)
 2290state(sx,sy)=0
 2300REM 'demote' moskovits when they leave camp
 2310IF state(ex,ey)=3 AND board(ex,ey)<>3 state(ex,ey)=4
 2320REM swedish wins when chief reaches the edge of the board
 2330IF state(ex,ey)=2 AND (ex=1 OR ex=9 OR ey=1 OR ey=9) PROCwinner(0)
 2340PROCsquare(sx,sy)
 2350PROCsquare(ex,ey)
 2360ENDPROC
 2370:
 2380DEF FNremove(rx,ry)
 2390r$=STR$rx+STR$ry+STR$state(rx,ry)
 2400state(rx,ry)=0
 2410PROCsquare(rx,ry)
 2420=r$
 2430:
 2440DEF FNtake(tx,ty)
 2450LOCAL t$
 2460t$=""
 2470REM chief cannot attack...
 2480ts=state(tx,ty)
 2490IF ts=2 THEN =""
 2500FOR d=0 TO 3
 2510 x1=tx+dx(d):y1=ty+dy(d)
 2520 s1=state(x1,y1)
 2530 IF ts=1 THEN
 2540  REM swedish attack...
 2550  IF s1=3 OR s1=4 THEN
 2560   REM if next piece is moskovit...
 2570   IF state(x1+dx(d),y1+dy(d))=1 THEN
 2580    REM and *next* piece is swedish (but not chief) then take
 2590    t$+=FNremove(x1,y1)
 2600   ENDIF
 2610  ENDIF
 2620 ELSE
 2630  REM moskovit attack... (3 or 4)
 2640  CASE s1 OF
 2650  WHEN 1:
 2660   REM if attacking a swedish soldier...
 2670   s2=state(x1+dx(d),y1+dy(d))
 2680   IF s2=3 OR s2=4 THEN
 2690    REM and *next* piece is moskovit then take
 2700    t$+=FNremove(x1,y1)
 2710   ENDIF
 2720  WHEN 2:
 2730   REM if attacking swedish chief...
 2740   n=0
 2750   FOR e=0 TO 3
 2760    REM if all surrounding squares are moskovits (not in camp) or their camps...
 2770    IF state(x1+dx(e),y1+dy(e))=4 OR board(x1+dx(e),y1+dy(e))=3 THEN
 2780     n+=1
 2790    ENDIF
 2800   NEXT
 2810   IF n=4 THEN
 2820    REM ...game is won
 2830    t$+=FNremove(x1,y1)
 2840    PROCwinner(1)
 2850   ENDIF
 2860  ENDCASE
 2870 ENDIF
 2880NEXT
 2890=t$
 2900:
 2910DEF FNundo(m$)
 2920REM M p [x y s]*
 2930p=VALMID$(m$,2,1)
 2940m$=MID$(m$,3)
 2950WHILE m$<>""
 2960 x=VALMID$(m$,1,1)
 2970 y=VALMID$(m$,2,1)
 2980 s=VALMID$(m$,3,1)
 2990 state(x,y)=s
 3000 PROCsquare(x,y)
 3010 m$=MID$(m$,4)
 3020ENDWHILE
 3030=p
 3040:
 3050DEF FNredo(m$)
 3060p=VALMID$(m$,2,1)
 3070x1=VALMID$(m$,3,1)
 3080y1=VALMID$(m$,4,1)
 3090x2=VALMID$(m$,6,1)
 3100y2=VALMID$(m$,7,1)
 3110PROCmove(x1,y1,x2,y2)
 3120z$=FNtake(x2,y2)
 3130=1-p
 3140:
 3150: --------------------------
 3160:
 3170DEF PROCsprites
 3180tiles=13
 3190w=4*((((size>>FNmodevar(4))+1) DIV 8)+1)
 3200mem=w*((size>>FNmodevar(5))+1)+256
 3210sprites=FNsprite_area(tiles*mem+1024)
 3220n=0
 3230REPEAT
 3240 READ fg,bg
 3250 IF fg<>-1 THEN
 3260  PROCdraw(fg,bg,-1)
 3270  PROCgrab(STR$n,0,0,size,size)
 3280  IF fg<>0 THEN
 3290   PROCdraw(fg,bg,15)
 3300   PROCgrab(STR$(n+5),0,0,size,size)
 3310  ENDIF
 3320  n+=1
 3330 ENDIF
 3340UNTIL fg=-1
 3350IF n+5<>tiles ERROR 1,"Tiles gorn wrong"
 3360CLS
 3370ENDPROC
 3380:
 3390DATA 0,9, 0,10, 0,11
 3400DATA 1,9
 3410DATA 2,9, 2,10
 3420DATA 3,9,       3,11
 3430DATA -1,-1
 3440:
 3450DEF PROCdraw(fg,bg,sh)
 3460GCOL bg
 3470 RECTANGLE FILL 0,0,size-1
 3480GCOL 15
 3490 RECTANGLE 0,0,size
 3500IF fg>0 THEN
 3510 xc=size/2
 3520 yc=size/2
 3530 r=size*2/5
 3540 IF sh<>-1 THEN
 3550  GCOL sh
 3560  CIRCLE FILL xc+4,yc-4,r
 3570  xc-=4
 3580  yc+=4
 3590 ENDIF
 3600 GCOL fg
 3610 CIRCLE FILL xc,yc,r
 3620 IF fg=2 THEN
 3630 r=r/SQR(2)
 3640  GCOL 10
 3650  MOVE xc-r,yc+r:DRAW xc+r,yc-r
 3660  MOVE xc-r,yc-r:DRAW xc+r,yc+r
 3670 ENDIF
 3680ENDIF
 3690ENDPROC
 3700:
 3710: ----------
 3720:
 3730DEF FNswi(swi$)
 3740SYS "OS_SWINumberFromString",,swi$ TO swi
 3750=swi
 3760:
 3770DEF PROCmode
 3780mode=12
 3790IF FNcheck_mode(20) mode=20
 3800IF FNcheck_mode(27) mode=27
 3810MODE mode:OFF
 3820screenx=(FNmodevar(11)+1)<<FNmodevar(4)
 3830screeny=(FNmodevar(12)+1)<<FNmodevar(5)
 3840IF screenx<screeny s=screenx ELSE s=screeny
 3850size=((s DIV 9) DIV 4)*4
 3860xorg=(screenx-size*9)/2
 3870yorg=(screeny-size*9)/2
 3880ENDPROC
 3890
 3900DEF FNcheck_mode(mode)
 3910SYS "OS_CheckModeValid",mode TO ok
 3920=(ok<>-1)
 3930:
 3940DEF FNmodevar(var)
 3950SYS "OS_ReadModeVariable",-1,var TO ,,val
 3960=val
 3970:
 3980DEF FNsprite_area(size)
 3990DIM s size
 4000!s=size
 4010s!8=16
 4020SYS spop,&109,s
 4030=s
 4040:
 4050DEF PROCgrab(name$,x0,y0,x1,y1)
 4060SYS spop,&110,sprites,name$,1,x0,y0,x1,y1
 4070ENDPROC

$� >Hneftafl - a game for Vikings
 �  By Dave Lawrence, 01Feb95
B�  Based on rules from Jan Af Geijerstam uploaded to Arcade BB
(
2!� � � � �,�$+" at line "+Þ:�
<	�mode
F	�init
P�palette
Z�sprites
d�
n
 �newgame
x	 ȗ �
� �
�9  � winner<0 � �0,0);�p$(player)+�8," "),8)'"to play"
�  move$=�player(player)
�  Ȏ �move$,1) �
�
   � "M":
�    move$(move)=move$
�'    move+=1:� move>max_moves move=0
�    last_move=move
�P    � last_move=first_move first_move+=1:� first_move>max_moves first_move=0
�    player=1-player
�
   � "U":
�    move-=1
�     � move<0 move+=max_moves
!    player=�undo(move$(move))
    �winner(-1)

   � "R":
"!    player=�redo(move$(move))
,    move+=1
6    � move>max_moves move=0
@
   � "P":
J    player=1-player
T
   � "Q":
^    restart=�
h  �
r   
| � restart
�� �
��
�
�� �init
�max_moves=100
�S� board(11,11),state(11,11),t(4,3),button(1),dx(3),dy(3),move$(max_moves),p$(1)
�spop=�swi("OS_SpriteOp")
�button()=4,1
�board()=-1
�dx()=0,1,0,-1
�dy()=1,0,-1,0
�p$()="Swedish","Moskovit"
�
� y=1 � 9
	 � a$
 � x=1 � 9
  Ȏ �a$,x,1) �
&   � "." : z=0
0   � "S" : z=1
:   � "X" : z=2
D   � "M" : z=3
N   : � 1,"Bad string"
X  �
b  board(x,y)=z
l �
v�
�
� b=0 � 3
� � s=0 � 4
�  � t(s,b)
� �
��
��
�:
�� ...MMM...
�� ....M....
�� ....S....
�� M...S...M
�� MMSSXSSMM
�� M...S...M
� ....S....
� ....M....
� ...MMM...
 :
*� 0, 3, 4, 6, 6
4� 0, 3, 4, 6, 6
>� 1,-1, 5,-1,-1
H� 2,-1,-1, 7, 7
R:
\� �palette
f�  0,&00,&00,&00 : � fg .
p�  1,&A0,&A0,&A0 : � fg S
z�  2,&80,&80,&80 : � fg X
��  3,&D0,&00,&00 : � fg M
�#�  4,&D0,&00,&00 : � fg M (out)
��  7,&FF,&FF,&FF
��  8,&00,&00,&00 : � bg .
��  9,&00,&00,&00 : � bg S
�� 10,&40,&40,&40 : � bg X
�� 11,&40,&00,&00 : � bg M
�'� 12,&00,&00,&00 : � bg M (out) N/A
�� 15,&20,&20,&20
��
�
�� �newgame
�state()=board()
player=0
�winner(-1)

� y=1 � 9
$ � x=1 � 9
.  �square(x,y)
8 �
B�
L
move=0
Vlast_move=0
`first_move=0
j
restart=�
t�
~:
�� �winner(w)
�winner=w
�� �0,0);
�� w=-1 �
� � ��p$(1)'��p$(1)
��
� � p$(winner)'"wins!  "
��
��
�:
�� �square(x,y)
�Rș spop,&122,sprites,�t(state(x,y),board(x,y)),xorg+(x-1)*size,yorg+(y-1)*size
�

:
� �tile(x,y,s,b)
!� s>=0 t=t(s,b) � t=5+t(-s,b)
(;ș spop,&122,sprites,�t,xorg+(x-1)*size,yorg+(y-1)*size
2�
<:
F
� �key
P	k$=�0
Z$� k$>="a" � k$<="z" k$=�(�k$-32)
d� k$="P" � =k$
n� k$="Q" � =k$
x%� k$="U" � move<>first_move � =k$
�$� k$="R" � move<>last_move � =k$
�=""
�:
�� �player(p)
��
� �
�  �
�   ȗ x,y,z
�   k$=�key
�   � k$<>"" � =k$
  � z<>0
  x1=((x-xorg) � size)+1
  y1=((y-yorg) � size)+1
" � �start_ok(x1,y1,p)
6, �tile(x1,y1,-state(x1,y1),board(x1,y1))
@
 ox=x1
J
 oy=y1
T �
^  ȗ x,y,z
|
  k$=�key
�  � k$<>"" �
�   �square(ox,oy)
�   �square(x1,y1)
�
   =k$
�  �
�  x2=((x-xorg) � size)+1
�  y2=((y-yorg) � size)+1
�!  � �end_ok(x2,y2, x1,y1,p) �
�   � x2<>ox � y2<>oy �
�#    �tile(ox,oy,0,board(ox,oy))
�/    �tile(x2,y2,-state(x1,y1),board(x2,y2))
�
    ox=x2
�
    oy=y2
   �
  �

 � z=0
 x2=ox:y2=oy
0# � x2=x1 � y2=y1 �square(x1,y1)
:� x2<>x1 � y2<>y1
D2m$=�x1+�y1+�state(x1,y1)+�x2+�y2+�state(x2,y2)
N�move(x1,y1,x2,y2)
Xm$+=�take(x2,y2)
b="M"+�p+m$
l:
v� �start_ok(sx,sy,p)
�/� cannot continue playing if already won...
�� winner<>-1 � =�
�� no squares off board
�$� sx<1 � sy<1 � sx>9 � sy>9 � =�
�ss=state(sx,sy)
�� swedish pieces = 1 and 2
� � (p=0 � (ss=1 � ss=2)) � =�
�!� moskovit pieces = (3 and 4)
� � (p=1 � (ss=3 � ss=4)) � =�
�=�
�:
�� �end_ok(ex,ey, sx,sy,p)
�� not allowed off board...
$� ex<1 � ey<1 � ex>9 � ey>9 � =�
ss=state(sx,sy)
es=state(ex,ey)
 eb=board(ex,ey)
*(� is allowed back to start square...
4� ex=sx � ey=sy � =�
>/� not allowed off vertical or horizontal...
H� ex<>sx � ey<>sy � =�
R"� check each square in move...
\xx=sx:yy=sy:zz=ss
f�
p xx+=�(ex-sx) 
z yy+=�(ey-sy)
�R � squares must be empty, not castle and not camp unless piece moved from camp
�E no=(state(xx,yy)<>0 � board(xx,yy)=2 � (board(xx,yy)=3 � zz<>3))
�" � zz=3 � board(xx,yy)<>3 zz=4
�� xx=ex � yy=ey � no
�
� no � =�
�C� cannot end up on castle or camp square [unless a camped M]...
�,�IF eb=2 OR (eb=3 AND ss<>3) THEN =FALSE
�=�
�:
�� �move(sx,sy,ex,ey)
�state(ex,ey)=state(sx,sy)
�state(sx,sy)=0
�-� 'demote' moskovits when they leave camp
	5� state(ex,ey)=3 � board(ex,ey)<>3 state(ex,ey)=4
	;� swedish wins when chief reaches the edge of the board
	=� state(ex,ey)=2 � (ex=1 � ex=9 � ey=1 � ey=9) �winner(0)
	$�square(sx,sy)
	.�square(ex,ey)
	8�
	B:
	L� �remove(rx,ry)
	Vr$=�rx+�ry+�state(rx,ry)
	`state(rx,ry)=0
	j�square(rx,ry)
	t=r$
	~:
	�� �take(tx,ty)
	�� t$
	�	t$=""
	�� chief cannot attack...
	�ts=state(tx,ty)
	�� ts=2 � =""
	�
� d=0 � 3
	� x1=tx+dx(d):y1=ty+dy(d)
	� s1=state(x1,y1)
	�
 � ts=1 �
	�  � swedish attack...
	�  � s1=3 � s1=4 �
%   � if next piece is moskovit...

%   � state(x1+dx(d),y1+dy(d))=1 �
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�   �
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+� screenx<screeny s=screenx � s=screeny

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�
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00001b50  20 e7 20 66 67 3d 32 20  8c 0d 0e 2e 0d 20 72 3d  | . fg=2 ..... r=|
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00001e8b