� > Alt-Boot
� by Paul Mason, 1992
*� avoids autobooting of filer displays
(� when ALT is depressed
2
<ș &1E,6,,,1024 � ,,code%
F� opt%=0 � 2 � 2
PP%=code%
Z
[OPT opt%
d
.filev
n
TEQ R0,#5
xTEQNE R0,#13
�TEQNE R0,#15
�TEQNE R0,#17
�MOVNE PC,R14
�
MOV R2,R1
�.lp0
�LDRB R3,[R2],#1
�CMP R3,#32
�BGE lp0
�SUB R2,R2,#2
�LDRB R3,[R2,#0]
��R R3,R3,#32
�.b
�TEQ R3,#�"t"

BNE finish

LDRB R3,[R2,#-1]

�R R3,R3,#32

"TEQ R3,#�"o"

,BNE finish

6LDRB R3,[R2,#-2]

@�R R3,R3,#32

JTEQ R3,#�"o"

TBNE finish

^LDRB R3,[R2,#-3]

h�R R3,R3,#32

rTEQ R3,#�"b"

|BNE finish

�LDRB R3,[R2,#-4]

��R R3,R3,#32

�TEQ R3,#�"!"

�SUB R2,R2,#5

�
CMP R2,R1

�BLE refuse

�LDRB R3,[R2]

�TEQ R3,#�"."

�BNE finish

�.refuse

�STMFD R13!,{R0-R12,R14}

�MOV R0,#&81

�MOV R1,#(2�&FF)
MOV R2,#&FF
SWI &20006
TEQ R1,#&FF
&LDMFD R13!,{R0-R12,R14}
0�Q R0,#0
:LDMEQFD R13!,{PC}
D.finish
NMOVS PC,R14
X]
b�
lș &1F,&8,filev,0
v�
�

00000000  0d 00 0a 10 f4 20 3e 20  41 6c 74 2d 42 6f 6f 74  |..... > Alt-Boot|
00000010  0d 00 14 19 f4 20 62 79  20 50 61 75 6c 20 4d 61  |..... by Paul Ma|
00000020  73 6f 6e 2c 20 31 39 39  32 0d 00 1e 2a f4 20 61  |son, 1992...*. a|
00000030  76 6f 69 64 73 20 61 75  74 6f 62 6f 6f 74 69 6e  |voids autobootin|
00000040  67 20 6f 66 20 66 69 6c  65 72 20 64 69 73 70 6c  |g of filer displ|
00000050  61 79 73 0d 00 28 1b f4  20 77 68 65 6e 20 41 4c  |ays..(.. when AL|
00000060  54 20 69 73 20 64 65 70  72 65 73 73 65 64 0d 00  |T is depressed..|
00000070  32 04 0d 00 3c 1d c8 99  20 26 31 45 2c 36 2c 2c  |2...<... &1E,6,,|
00000080  2c 31 30 32 34 20 b8 20  2c 2c 63 6f 64 65 25 0d  |,1024 . ,,code%.|
00000090  00 46 14 e3 20 6f 70 74  25 3d 30 20 b8 20 32 20  |.F.. opt%=0 . 2 |
000000a0  88 20 32 0d 00 50 0c 50  25 3d 63 6f 64 65 25 0d  |. 2..P.P%=code%.|
000000b0  00 5a 0d 5b 4f 50 54 20  6f 70 74 25 0d 00 64 0a  |.Z.[OPT opt%..d.|
000000c0  2e 66 69 6c 65 76 0d 00  6e 0d 54 45 51 20 52 30  |.filev..n.TEQ R0|
000000d0  2c 23 35 0d 00 78 10 54  45 51 4e 45 20 52 30 2c  |,#5..x.TEQNE R0,|
000000e0  23 31 33 0d 00 82 10 54  45 51 4e 45 20 52 30 2c  |#13....TEQNE R0,|
000000f0  23 31 35 0d 00 8c 10 54  45 51 4e 45 20 52 30 2c  |#15....TEQNE R0,|
00000100  23 31 37 0d 00 96 10 4d  4f 56 4e 45 20 50 43 2c  |#17....MOVNE PC,|
00000110  52 31 34 0d 00 a0 0d 4d  4f 56 20 52 32 2c 52 31  |R14....MOV R2,R1|
00000120  0d 00 aa 08 2e 6c 70 30  0d 00 b4 13 4c 44 52 42  |.....lp0....LDRB|
00000130  20 52 33 2c 5b 52 32 5d  2c 23 31 0d 00 be 0e 43  | R3,[R2],#1....C|
00000140  4d 50 20 52 33 2c 23 33  32 0d 00 c8 0b 42 47 45  |MP R3,#32....BGE|
00000150  20 6c 70 30 0d 00 d2 10  53 55 42 20 52 32 2c 52  | lp0....SUB R2,R|
00000160  32 2c 23 32 0d 00 dc 13  4c 44 52 42 20 52 33 2c  |2,#2....LDRB R3,|
00000170  5b 52 32 2c 23 30 5d 0d  00 e6 10 84 52 20 52 33  |[R2,#0].....R R3|
00000180  2c 52 33 2c 23 33 32 0d  00 f0 06 2e 62 0d 00 fa  |,R3,#32.....b...|
00000190  10 54 45 51 20 52 33 2c  23 97 22 74 22 0d 01 04  |.TEQ R3,#."t"...|
000001a0  0e 42 4e 45 20 66 69 6e  69 73 68 0d 01 0e 14 4c  |.BNE finish....L|
000001b0  44 52 42 20 52 33 2c 5b  52 32 2c 23 2d 31 5d 0d  |DRB R3,[R2,#-1].|
000001c0  01 18 10 84 52 20 52 33  2c 52 33 2c 23 33 32 0d  |....R R3,R3,#32.|
000001d0  01 22 10 54 45 51 20 52  33 2c 23 97 22 6f 22 0d  |.".TEQ R3,#."o".|
000001e0  01 2c 0e 42 4e 45 20 66  69 6e 69 73 68 0d 01 36  |.,.BNE finish..6|
000001f0  14 4c 44 52 42 20 52 33  2c 5b 52 32 2c 23 2d 32  |.LDRB R3,[R2,#-2|
00000200  5d 0d 01 40 10 84 52 20  52 33 2c 52 33 2c 23 33  |]..@..R R3,R3,#3|
00000210  32 0d 01 4a 10 54 45 51  20 52 33 2c 23 97 22 6f  |2..J.TEQ R3,#."o|
00000220  22 0d 01 54 0e 42 4e 45  20 66 69 6e 69 73 68 0d  |"..T.BNE finish.|
00000230  01 5e 14 4c 44 52 42 20  52 33 2c 5b 52 32 2c 23  |.^.LDRB R3,[R2,#|
00000240  2d 33 5d 0d 01 68 10 84  52 20 52 33 2c 52 33 2c  |-3]..h..R R3,R3,|
00000250  23 33 32 0d 01 72 10 54  45 51 20 52 33 2c 23 97  |#32..r.TEQ R3,#.|
00000260  22 62 22 0d 01 7c 0e 42  4e 45 20 66 69 6e 69 73  |"b"..|.BNE finis|
00000270  68 0d 01 86 14 4c 44 52  42 20 52 33 2c 5b 52 32  |h....LDRB R3,[R2|
00000280  2c 23 2d 34 5d 0d 01 90  10 84 52 20 52 33 2c 52  |,#-4].....R R3,R|
00000290  33 2c 23 33 32 0d 01 9a  10 54 45 51 20 52 33 2c  |3,#32....TEQ R3,|
000002a0  23 97 22 21 22 0d 01 a4  10 53 55 42 20 52 32 2c  |#."!"....SUB R2,|
000002b0  52 32 2c 23 35 0d 01 ae  0d 43 4d 50 20 52 32 2c  |R2,#5....CMP R2,|
000002c0  52 31 0d 01 b8 0e 42 4c  45 20 72 65 66 75 73 65  |R1....BLE refuse|
000002d0  0d 01 c2 10 4c 44 52 42  20 52 33 2c 5b 52 32 5d  |....LDRB R3,[R2]|
000002e0  0d 01 cc 10 54 45 51 20  52 33 2c 23 97 22 2e 22  |....TEQ R3,#."."|
000002f0  0d 01 d6 0e 42 4e 45 20  66 69 6e 69 73 68 0d 01  |....BNE finish..|
00000300  e0 0b 2e 72 65 66 75 73  65 0d 01 ea 1b 53 54 4d  |...refuse....STM|
00000310  46 44 20 52 31 33 21 2c  7b 52 30 2d 52 31 32 2c  |FD R13!,{R0-R12,|
00000320  52 31 34 7d 0d 01 f4 0f  4d 4f 56 20 52 30 2c 23  |R14}....MOV R0,#|
00000330  26 38 31 0d 01 fe 13 4d  4f 56 20 52 31 2c 23 28  |&81....MOV R1,#(|
00000340  32 82 26 46 46 29 0d 02  08 0f 4d 4f 56 20 52 32  |2.&FF)....MOV R2|
00000350  2c 23 26 46 46 0d 02 12  0e 53 57 49 20 26 32 30  |,#&FF....SWI &20|
00000360  30 30 36 0d 02 1c 0f 54  45 51 20 52 31 2c 23 26  |006....TEQ R1,#&|
00000370  46 46 0d 02 26 1b 4c 44  4d 46 44 20 52 31 33 21  |FF..&.LDMFD R13!|
00000380  2c 7b 52 30 2d 52 31 32  2c 52 31 34 7d 0d 02 30  |,{R0-R12,R14}..0|
00000390  0c ec 51 20 52 30 2c 23  30 0d 02 3a 15 4c 44 4d  |..Q R0,#0..:.LDM|
000003a0  45 51 46 44 20 52 31 33  21 2c 7b 50 43 7d 0d 02  |EQFD R13!,{PC}..|
000003b0  44 0b 2e 66 69 6e 69 73  68 0d 02 4e 0f 4d 4f 56  |D..finish..N.MOV|
000003c0  53 20 50 43 2c 52 31 34  0d 02 58 05 5d 0d 02 62  |S PC,R14..X.]..b|
000003d0  05 ed 0d 02 6c 15 c8 99  20 26 31 46 2c 26 38 2c  |....l... &1F,&8,|
000003e0  66 69 6c 65 76 2c 30 0d  02 76 05 e0 0d ff        |filev,0..v....|
000003ee