Home » Archimedes archive » Acorn User » AU 1994-01.adf » !StarInfo_StarInfo » Vibe/Ballet

Vibe/Ballet

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 » Archimedes archive » Acorn User » AU 1994-01.adf » !StarInfo_StarInfo
Filename: Vibe/Ballet
Read OK:
File size: 0828 bytes
Load address: 0000
Exec address: 0000
File contents
   10REM     >Ballet
   20REM By  Jan Vibe
   30REM For 32-bit machines
   40REM (c) BAU January 1994
   50:
   60ON ERROR PROCerr:END
   70PROCinit_mode_and_palette
   80PROCinit_vars
   90PROCinit_sprite_area
  100PROCmake_ball
  110PROCchoose_random_figure
  120PROCcalc_coords(from_x%(),from_y%())
  130REPEAT
  140 PROCchoose_random_figure
  150 PROCcalc_coords(to_x%(),to_y%())
  160 PROCanimate
  170UNTIL FALSE
  180:
  190DEF PROCerr
  200SYS os_byte%,112,scr%
  210ON
  220PRINTREPORT$" at line ";ERL
  230ENDPROC
  240:
  250DEF PROCinit_mode_and_palette
  260MODE 9
  270MODE 137
  280OFF
  290FOR n%=1 TO 15
  300 COLOUR n%,16*n%,8*n%,4*n%
  310NEXT
  320COLOUR 0,0,128,255
  330VDU 19,0,24,0,128,255
  340ENDPROC
  350:
  360DEF PROCinit_vars
  370balls%=45
  380DIM a%(4)
  390DIM from_x%(balls%),from_y%(balls%)
  400DIM to_x%(balls%),to_y%(balls%)
  410a%=RND(-TIME)
  420scr%=1
  430stages%=40
  440x1%=60
  450y1%=70
  460r1%=84
  470x2%=48
  480y2%=48
  490r2%=48
  500os_byte%=&06
  510os_spriteop%=&2E
  520DIM m1(stages%),m2(stages%)
  530FOR i%=0 TO stages%
  540 m1(i%)=SIN(i%*PI/(2*stages%))^2
  550 m2(i%)=1-m1(i%)
  560NEXT
  570ENDPROC
  580:
  590DEF PROCinit_sprite_area
  600DIM spr% 1024
  610!spr%=1024
  620spr%!8=16
  630SYS os_spriteop%,&109,spr%
  640ENDPROC
  650:
  660DEF PROCmake_ball
  670LOCAL b%,x%,y%,s%
  680FOR y%=-r2% TO r2% STEP 4
  690 b%=4*(SQR(r2%^2-y%^2)DIV4)
  700 FOR x%=-b% TO b% STEP 4
  710  GCOL 16-SQR((x2%+x%-x1%)^2+(y2%+y%-y1%)^2)/(r1%/17)
  720  POINT x2%+x%,y2%+y%
  730 NEXT
  740NEXT
  750SYS os_spriteop%,&110,spr%,"kugle",0,0,0,96,96 TO ,,kugle%
  760SYS os_spriteop%,&21D,spr%,kugle%
  770FOR y%=0 TO 96 STEP 4
  780 FOR x%=0 TO 96 STEP 4
  790  IF POINT(x%,y%)=0 s%=0 ELSE s%=1
  800  SYS os_spriteop%,&22C,spr%,kugle%,x%/4,y%/4,s%
  810 NEXT
  820NEXT
  830ENDPROC
  840:
  850DEF PROCchoose_random_figure
  860LOCAL n%
  870FOR n%=1 TO 4
  880 a%(n%)=2*RND(4)
  890NEXT
  900ENDPROC
  910:
  920DEF PROCcalc_coords(RETURN x%(),RETURN y%())
  930LOCAL n%,i%
  940FOR i%=0 TO balls%
  950 n%=(i%+balls%)*2
  960 x%(i%)=450*SINRAD(a%(1)*n%)*COSRAD(a%(2)*n%)+592
  970 y%(i%)=450*SINRAD(a%(3)*n%)*COSRAD(a%(4)*n%)+464
  980NEXT
  990ENDPROC
 1000:
 1010DEF PROCanimate
 1020LOCAL i%,x%,y%
 1030FOR i%=0 TO stages%
 1040 PROCswap_screens
 1050 FOR n%=0 TO balls%
 1060  x%=m1(i%)*to_x%(n%)+m2(i%)*from_x%(n%)
 1070  y%=m1(i%)*to_y%(n%)+m2(i%)*from_y%(n%)
 1080  SYS os_spriteop%,&222,spr%,kugle%,x%,y%,8
 1090 NEXT
 1100NEXT
 1110from_x%()=to_x%()
 1120from_y%()=to_y%()
 1130ENDPROC
 1140:
 1150DEF PROCswap_screens
 1160WAIT
 1170SYS os_byte%,113,scr%
 1180scr%=3-scr%
 1190SYS os_byte%,112,scr%
 1200CLS
 1210ENDPROC

�     >Ballet
� By  Jan Vibe
� For 32-bit machines
(� (c) BAU January 1994
2:
<� � �err:�
F�init_mode_and_palette
P�init_vars
Z�init_sprite_area
d�make_ball
n�choose_random_figure
x%�calc_coords(from_x%(),from_y%())
��
� �choose_random_figure
�" �calc_coords(to_x%(),to_y%())
�
 �animate
�� �
�:
�
� �err
�ș os_byte%,112,scr%
��
��$" at line ";�
��
�:
�� �init_mode_and_palette
� 9
	� 137
�
"� n%=1 � 15
, � n%,16*n%,8*n%,4*n%
6�
@� 0,0,128,255
J� 19,0,24,0,128,255
T�
^:
h� �init_vars
r
balls%=45
|� a%(4)
�%� from_x%(balls%),from_y%(balls%)
�!� to_x%(balls%),to_y%(balls%)
�a%=�(-�)
�
scr%=1
�stages%=40
�
x1%=60
�
y1%=70
�
r1%=84
�
x2%=48
�
y2%=48
�
r2%=48
�os_byte%=&06
�os_spriteop%=&2E
� m1(stages%),m2(stages%)
� i%=0 � stages%
! m1(i%)=�(i%*�/(2*stages%))^2
& m2(i%)=1-m1(i%)
0�
:�
D:
N� �init_sprite_area
X� spr% 1024
b!spr%=1024
l
spr%!8=16
vș os_spriteop%,&109,spr%
��
�:
�� �make_ball
�� b%,x%,y%,s%
�� y%=-r2% � r2% � 4
� b%=4*(�(r2%^2-y%^2)�4)
� � x%=-b% � b% � 4
�4  � 16-�((x2%+x%-x1%)^2+(y2%+y%-y1%)^2)/(r1%/17)
�  Ȓ x2%+x%,y2%+y%
� �
��
�<ș os_spriteop%,&110,spr%,"kugle",0,0,0,96,96 � ,,kugle%
�$ș os_spriteop%,&21D,spr%,kugle%
� y%=0 � 96 � 4
 � x%=0 � 96 � 4
  � �x%,y%)=0 s%=0 � s%=1
 3  ș os_spriteop%,&22C,spr%,kugle%,x%/4,y%/4,s%
* �
4�
>�
H:
R� �choose_random_figure
\� n%
f� n%=1 � 4
p a%(n%)=2*�(4)
z�
��
�:
�!� �calc_coords(� x%(),� y%())
�� n%,i%
�� i%=0 � balls%
� n%=(i%+balls%)*2
�- x%(i%)=450*��(a%(1)*n%)*��(a%(2)*n%)+592
�- y%(i%)=450*��(a%(3)*n%)*��(a%(4)*n%)+464
��
��
�:
�� �animate
�� i%,x%,y%
� i%=0 � stages%
 �swap_screens
 � n%=0 � balls%
$,  x%=m1(i%)*to_x%(n%)+m2(i%)*from_x%(n%)
.,  y%=m1(i%)*to_y%(n%)+m2(i%)*from_y%(n%)
8.  ș os_spriteop%,&222,spr%,kugle%,x%,y%,8
B �
L�
Vfrom_x%()=to_x%()
`from_y%()=to_y%()
j�
t:
~� �swap_screens
�Ȗ
�ș os_byte%,113,scr%
�scr%=3-scr%
�ș os_byte%,112,scr%
��
��
�
00000000  0d 00 0a 11 f4 20 20 20  20 20 3e 42 61 6c 6c 65  |.....     >Balle|
00000010  74 0d 00 14 12 f4 20 42  79 20 20 4a 61 6e 20 56  |t..... By  Jan V|
00000020  69 62 65 0d 00 1e 19 f4  20 46 6f 72 20 33 32 2d  |ibe..... For 32-|
00000030  62 69 74 20 6d 61 63 68  69 6e 65 73 0d 00 28 1a  |bit machines..(.|
00000040  f4 20 28 63 29 20 42 41  55 20 4a 61 6e 75 61 72  |. (c) BAU Januar|
00000050  79 20 31 39 39 34 0d 00  32 05 3a 0d 00 3c 0e ee  |y 1994..2.:..<..|
00000060  20 85 20 f2 65 72 72 3a  e0 0d 00 46 1a f2 69 6e  | . .err:...F..in|
00000070  69 74 5f 6d 6f 64 65 5f  61 6e 64 5f 70 61 6c 65  |it_mode_and_pale|
00000080  74 74 65 0d 00 50 0e f2  69 6e 69 74 5f 76 61 72  |tte..P..init_var|
00000090  73 0d 00 5a 15 f2 69 6e  69 74 5f 73 70 72 69 74  |s..Z..init_sprit|
000000a0  65 5f 61 72 65 61 0d 00  64 0e f2 6d 61 6b 65 5f  |e_area..d..make_|
000000b0  62 61 6c 6c 0d 00 6e 19  f2 63 68 6f 6f 73 65 5f  |ball..n..choose_|
000000c0  72 61 6e 64 6f 6d 5f 66  69 67 75 72 65 0d 00 78  |random_figure..x|
000000d0  25 f2 63 61 6c 63 5f 63  6f 6f 72 64 73 28 66 72  |%.calc_coords(fr|
000000e0  6f 6d 5f 78 25 28 29 2c  66 72 6f 6d 5f 79 25 28  |om_x%(),from_y%(|
000000f0  29 29 0d 00 82 05 f5 0d  00 8c 1a 20 f2 63 68 6f  |))......... .cho|
00000100  6f 73 65 5f 72 61 6e 64  6f 6d 5f 66 69 67 75 72  |ose_random_figur|
00000110  65 0d 00 96 22 20 f2 63  61 6c 63 5f 63 6f 6f 72  |e..." .calc_coor|
00000120  64 73 28 74 6f 5f 78 25  28 29 2c 74 6f 5f 79 25  |ds(to_x%(),to_y%|
00000130  28 29 29 0d 00 a0 0d 20  f2 61 6e 69 6d 61 74 65  |()).... .animate|
00000140  0d 00 aa 07 fd 20 a3 0d  00 b4 05 3a 0d 00 be 0a  |..... .....:....|
00000150  dd 20 f2 65 72 72 0d 00  c8 18 c8 99 20 6f 73 5f  |. .err...... os_|
00000160  62 79 74 65 25 2c 31 31  32 2c 73 63 72 25 0d 00  |byte%,112,scr%..|
00000170  d2 05 ee 0d 00 dc 14 f1  f6 24 22 20 61 74 20 6c  |.........$" at l|
00000180  69 6e 65 20 22 3b 9e 0d  00 e6 05 e1 0d 00 f0 05  |ine ";..........|
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000001a0  65 5f 61 6e 64 5f 70 61  6c 65 74 74 65 0d 01 04  |e_and_palette...|
000001b0  07 eb 20 39 0d 01 0e 09  eb 20 31 33 37 0d 01 18  |.. 9..... 137...|
000001c0  05 87 0d 01 22 0f e3 20  6e 25 3d 31 20 b8 20 31  |....".. n%=1 . 1|
000001d0  35 0d 01 2c 19 20 fb 20  6e 25 2c 31 36 2a 6e 25  |5..,. . n%,16*n%|
000001e0  2c 38 2a 6e 25 2c 34 2a  6e 25 0d 01 36 05 ed 0d  |,8*n%,4*n%..6...|
000001f0  01 40 11 fb 20 30 2c 30  2c 31 32 38 2c 32 35 35  |.@.. 0,0,128,255|
00000200  0d 01 4a 17 ef 20 31 39  2c 30 2c 32 34 2c 30 2c  |..J.. 19,0,24,0,|
00000210  31 32 38 2c 32 35 35 0d  01 54 05 e1 0d 01 5e 05  |128,255..T....^.|
00000220  3a 0d 01 68 10 dd 20 f2  69 6e 69 74 5f 76 61 72  |:..h.. .init_var|
00000230  73 0d 01 72 0d 62 61 6c  6c 73 25 3d 34 35 0d 01  |s..r.balls%=45..|
00000240  7c 0b de 20 61 25 28 34  29 0d 01 86 25 de 20 66  ||.. a%(4)...%. f|
00000250  72 6f 6d 5f 78 25 28 62  61 6c 6c 73 25 29 2c 66  |rom_x%(balls%),f|
00000260  72 6f 6d 5f 79 25 28 62  61 6c 6c 73 25 29 0d 01  |rom_y%(balls%)..|
00000270  90 21 de 20 74 6f 5f 78  25 28 62 61 6c 6c 73 25  |.!. to_x%(balls%|
00000280  29 2c 74 6f 5f 79 25 28  62 61 6c 6c 73 25 29 0d  |),to_y%(balls%).|
00000290  01 9a 0c 61 25 3d b3 28  2d 91 29 0d 01 a4 0a 73  |...a%=.(-.)....s|
000002a0  63 72 25 3d 31 0d 01 ae  0e 73 74 61 67 65 73 25  |cr%=1....stages%|
000002b0  3d 34 30 0d 01 b8 0a 78  31 25 3d 36 30 0d 01 c2  |=40....x1%=60...|
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000002d0  34 0d 01 d6 0a 78 32 25  3d 34 38 0d 01 e0 0a 79  |4....x2%=48....y|
000002e0  32 25 3d 34 38 0d 01 ea  0a 72 32 25 3d 34 38 0d  |2%=48....r2%=48.|
000002f0  01 f4 10 6f 73 5f 62 79  74 65 25 3d 26 30 36 0d  |...os_byte%=&06.|
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00000330  0d 02 12 14 e3 20 69 25  3d 30 20 b8 20 73 74 61  |..... i%=0 . sta|
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00000390  6e 69 74 5f 73 70 72 69  74 65 5f 61 72 65 61 0d  |nit_sprite_area.|
000003a0  02 58 0f de 20 73 70 72  25 20 31 30 32 34 0d 02  |.X.. spr% 1024..|
000003b0  62 0e 21 73 70 72 25 3d  31 30 32 34 0d 02 6c 0d  |b.!spr%=1024..l.|
000003c0  73 70 72 25 21 38 3d 31  36 0d 02 76 1d c8 99 20  |spr%!8=16..v... |
000003d0  6f 73 5f 73 70 72 69 74  65 6f 70 25 2c 26 31 30  |os_spriteop%,&10|
000003e0  39 2c 73 70 72 25 0d 02  80 05 e1 0d 02 8a 05 3a  |9,spr%.........:|
000003f0  0d 02 94 10 dd 20 f2 6d  61 6b 65 5f 62 61 6c 6c  |..... .make_ball|
00000400  0d 02 9e 11 ea 20 62 25  2c 78 25 2c 79 25 2c 73  |..... b%,x%,y%,s|
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00000420  20 72 32 25 20 88 20 34  0d 02 b2 1b 20 62 25 3d  | r2% . 4.... b%=|
00000430  34 2a 28 b6 28 72 32 25  5e 32 2d 79 25 5e 32 29  |4*(.(r2%^2-y%^2)|
00000440  81 34 29 0d 02 bc 16 20  e3 20 78 25 3d 2d 62 25  |.4).... . x%=-b%|
00000450  20 b8 20 62 25 20 88 20  34 0d 02 c6 34 20 20 e6  | . b% . 4...4  .|
00000460  20 31 36 2d b6 28 28 78  32 25 2b 78 25 2d 78 31  | 16-.((x2%+x%-x1|
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00000480  29 5e 32 29 2f 28 72 31  25 2f 31 37 29 0d 02 d0  |)^2)/(r1%/17)...|
00000490  16 20 20 c8 92 20 78 32  25 2b 78 25 2c 79 32 25  |.  .. x2%+x%,y2%|
000004a0  2b 79 25 0d 02 da 06 20  ed 0d 02 e4 05 ed 0d 02  |+y%.... ........|
000004b0  ee 3c c8 99 20 6f 73 5f  73 70 72 69 74 65 6f 70  |.<.. os_spriteop|
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000004d0  6c 65 22 2c 30 2c 30 2c  30 2c 39 36 2c 39 36 20  |le",0,0,0,96,96 |
000004e0  b8 20 2c 2c 6b 75 67 6c  65 25 0d 02 f8 24 c8 99  |. ,,kugle%...$..|
000004f0  20 6f 73 5f 73 70 72 69  74 65 6f 70 25 2c 26 32  | os_spriteop%,&2|
00000500  31 44 2c 73 70 72 25 2c  6b 75 67 6c 65 25 0d 03  |1D,spr%,kugle%..|
00000510  02 13 e3 20 79 25 3d 30  20 b8 20 39 36 20 88 20  |... y%=0 . 96 . |
00000520  34 0d 03 0c 14 20 e3 20  78 25 3d 30 20 b8 20 39  |4.... . x%=0 . 9|
00000530  36 20 88 20 34 0d 03 16  1d 20 20 e7 20 b0 78 25  |6 . 4....  . .x%|
00000540  2c 79 25 29 3d 30 20 73  25 3d 30 20 8b 20 73 25  |,y%)=0 s%=0 . s%|
00000550  3d 31 0d 03 20 33 20 20  c8 99 20 6f 73 5f 73 70  |=1.. 3  .. os_sp|
00000560  72 69 74 65 6f 70 25 2c  26 32 32 43 2c 73 70 72  |riteop%,&22C,spr|
00000570  25 2c 6b 75 67 6c 65 25  2c 78 25 2f 34 2c 79 25  |%,kugle%,x%/4,y%|
00000580  2f 34 2c 73 25 0d 03 2a  06 20 ed 0d 03 34 05 ed  |/4,s%..*. ...4..|
00000590  0d 03 3e 05 e1 0d 03 48  05 3a 0d 03 52 1b dd 20  |..>....H.:..R.. |
000005a0  f2 63 68 6f 6f 73 65 5f  72 61 6e 64 6f 6d 5f 66  |.choose_random_f|
000005b0  69 67 75 72 65 0d 03 5c  08 ea 20 6e 25 0d 03 66  |igure..\.. n%..f|
000005c0  0e e3 20 6e 25 3d 31 20  b8 20 34 0d 03 70 12 20  |.. n%=1 . 4..p. |
000005d0  61 25 28 6e 25 29 3d 32  2a b3 28 34 29 0d 03 7a  |a%(n%)=2*.(4)..z|
000005e0  05 ed 0d 03 84 05 e1 0d  03 8e 05 3a 0d 03 98 21  |...........:...!|
000005f0  dd 20 f2 63 61 6c 63 5f  63 6f 6f 72 64 73 28 f8  |. .calc_coords(.|
00000600  20 78 25 28 29 2c f8 20  79 25 28 29 29 0d 03 a2  | x%(),. y%())...|
00000610  0b ea 20 6e 25 2c 69 25  0d 03 ac 13 e3 20 69 25  |.. n%,i%..... i%|
00000620  3d 30 20 b8 20 62 61 6c  6c 73 25 0d 03 b6 15 20  |=0 . balls%.... |
00000630  6e 25 3d 28 69 25 2b 62  61 6c 6c 73 25 29 2a 32  |n%=(i%+balls%)*2|
00000640  0d 03 c0 2d 20 78 25 28  69 25 29 3d 34 35 30 2a  |...- x%(i%)=450*|
00000650  b5 b2 28 61 25 28 31 29  2a 6e 25 29 2a 9b b2 28  |..(a%(1)*n%)*..(|
00000660  61 25 28 32 29 2a 6e 25  29 2b 35 39 32 0d 03 ca  |a%(2)*n%)+592...|
00000670  2d 20 79 25 28 69 25 29  3d 34 35 30 2a b5 b2 28  |- y%(i%)=450*..(|
00000680  61 25 28 33 29 2a 6e 25  29 2a 9b b2 28 61 25 28  |a%(3)*n%)*..(a%(|
00000690  34 29 2a 6e 25 29 2b 34  36 34 0d 03 d4 05 ed 0d  |4)*n%)+464......|
000006a0  03 de 05 e1 0d 03 e8 05  3a 0d 03 f2 0e dd 20 f2  |........:..... .|
000006b0  61 6e 69 6d 61 74 65 0d  03 fc 0e ea 20 69 25 2c  |animate..... i%,|
000006c0  78 25 2c 79 25 0d 04 06  14 e3 20 69 25 3d 30 20  |x%,y%..... i%=0 |
000006d0  b8 20 73 74 61 67 65 73  25 0d 04 10 12 20 f2 73  |. stages%.... .s|
000006e0  77 61 70 5f 73 63 72 65  65 6e 73 0d 04 1a 14 20  |wap_screens.... |
000006f0  e3 20 6e 25 3d 30 20 b8  20 62 61 6c 6c 73 25 0d  |. n%=0 . balls%.|
00000700  04 24 2c 20 20 78 25 3d  6d 31 28 69 25 29 2a 74  |.$,  x%=m1(i%)*t|
00000710  6f 5f 78 25 28 6e 25 29  2b 6d 32 28 69 25 29 2a  |o_x%(n%)+m2(i%)*|
00000720  66 72 6f 6d 5f 78 25 28  6e 25 29 0d 04 2e 2c 20  |from_x%(n%)..., |
00000730  20 79 25 3d 6d 31 28 69  25 29 2a 74 6f 5f 79 25  | y%=m1(i%)*to_y%|
00000740  28 6e 25 29 2b 6d 32 28  69 25 29 2a 66 72 6f 6d  |(n%)+m2(i%)*from|
00000750  5f 79 25 28 6e 25 29 0d  04 38 2e 20 20 c8 99 20  |_y%(n%)..8.  .. |
00000760  6f 73 5f 73 70 72 69 74  65 6f 70 25 2c 26 32 32  |os_spriteop%,&22|
00000770  32 2c 73 70 72 25 2c 6b  75 67 6c 65 25 2c 78 25  |2,spr%,kugle%,x%|
00000780  2c 79 25 2c 38 0d 04 42  06 20 ed 0d 04 4c 05 ed  |,y%,8..B. ...L..|
00000790  0d 04 56 15 66 72 6f 6d  5f 78 25 28 29 3d 74 6f  |..V.from_x%()=to|
000007a0  5f 78 25 28 29 0d 04 60  15 66 72 6f 6d 5f 79 25  |_x%()..`.from_y%|
000007b0  28 29 3d 74 6f 5f 79 25  28 29 0d 04 6a 05 e1 0d  |()=to_y%()..j...|
000007c0  04 74 05 3a 0d 04 7e 13  dd 20 f2 73 77 61 70 5f  |.t.:..~.. .swap_|
000007d0  73 63 72 65 65 6e 73 0d  04 88 06 c8 96 0d 04 92  |screens.........|
000007e0  18 c8 99 20 6f 73 5f 62  79 74 65 25 2c 31 31 33  |... os_byte%,113|
000007f0  2c 73 63 72 25 0d 04 9c  0f 73 63 72 25 3d 33 2d  |,scr%....scr%=3-|
00000800  73 63 72 25 0d 04 a6 18  c8 99 20 6f 73 5f 62 79  |scr%...... os_by|
00000810  74 65 25 2c 31 31 32 2c  73 63 72 25 0d 04 b0 05  |te%,112,scr%....|
00000820  db 0d 04 ba 05 e1 0d ff                           |........|
00000828