� >SmaTest
(� CODE% &400, BP% 6400
2� �0,5)"Run The RISC"
<� �0,8)"By Mike Cook"
F-� �0,10)"Sound Sampler Oscilloscope V0.1"
P1� �0,15)"You need the Sound Sampler for this"
Z�"Any key to continue"
nNewH%=�:SW%=1
�SPEED%=0:�_CSU
��_SAMPLE
��
�
N� �_SAMPLE
XG%=BP%+320*SW%:H%=320
bSW%=SW% � 1
l� SAMPN
v�
�
�� �_CSU :� CODE SETUP
�� A=0 � 2 � 2
�P%=CODE%
�[
�	OPT A
�.TVAL EQUD 0 \ TRIGGER �UE
�.SPE1 EQUD 0 \ LSB � SPEED
�.SPE2 EQUD 0 \ MSB � SPEED
�\ GATHER �
�
�".SAMPN \ ǖ HARDWARE SAMPLEING
�STMFD R13!,{R14}
�MOV R9,R15
�SWI "OS_EnterOS"
�(TEQP R15,#&C000003 \DISABLE �ERRUPTS
�MOVNV R0,R0
�)MOV R0,#&3200000 \ BASE ADDRESS � IOC
�'MOV R1,#&3000000 \ BASE � �ER LATCH
�ADD R1,R1,#&10000
�ADD R1,R1,#&9E0
�
\ HOLD � TRIGGER
LDR R2,TVAL

CMP R2,#0
&,BEQ TRUNN \ SKIP THIS � TRIGGER �UE IS 0
0
.THOLD
:MOV R2,#0 \ CHIP SELECT LOW
DSTR R2,[R1]
NMOV R3,#&A \ BITS � � IN
X!MOV R5,#0 \ COLLECT BITS HERE
b
.LOOP2
lLDR R4,[R1,#4] \ � �
vMOV R2,#&10000 \ CLOCK HIGH
�STR R2,[R1] \ PUT OUT � �ER
�MOV R4,R4,LSR #6
�� R4,R4,#1 \ MASK � BIT
�.MOV R5,R5,LSL #1 \ PREPARE R5 � RECIEVE IT
�#�R R5,R5,R4 \ MIX IT IN WITH R5
�MOV R2,#0 \ CLOCK LOW
�STR R2,[R1]
�SUBS R3,R3,#1
�
BNE LOOP2
�%MOV R2,#&20000 \ CHIP SELECT HIGH
�STR R2,[R1]
�#� R5,R5,#&FF \ MASK � START BIT
�\R5 NOW HAS SAMPLE

LDR R2,TVAL


CMP R2,R5


BLS THOLD

 

*
.TRUNN

4LDR R2,SPE2 \ T1 �UE HIGH

>$STR R2,[R0,#&44] \ T0 LATCH HIGH

HLDR R2,SPE1 \ T1 �UE LOW

R#STR R2,[R0,#&40] \ T0 LATCH LOW

\

f!LDR R2,[R0,#&18] \ � IRQ MASK

p�R R2,R2,#&20 \ ENABLE T0

zMOV  R2,R2,LSL #16

�STR R2,[R0,#&18] \ MASK REG

�

�"MOV R2,#&200000 \ � T0 �ERRUPT

�STR R2,[R0,#&14] \ IRQ �

�STR  R2,[R0,#&48] \ GO T0

�

�".TLOOP \ DELAY LOOP � TIMER T0

�LDRB R2,[R0,#&10]

�TST R2,#&20

�
BEQ TLOOP

�"MOV R2,#&200000 \ � T0 �ERRUPT

�STR R2,[R0,#&14] \ IRQ �

�

�
B exit
\ TAKE �E SAMPLE
MOV R2,#0 \ CHIP SELECT LOW
STR R2,[R1]
$MOV R3,#&A \ BITS � � IN
.!MOV R5,#0 \ COLLECT BITS HERE
8
.LOOP1
BLDR R4,[R1,#4] \ � �
LMOV R2,#&10000 \ CLOCK HIGH
VSTR R2,[R1] \ PUT OUT � �ER
`MOV R4,R4,LSR #6
j� R4,R4,#1 \ MASK � BIT
t.MOV R5,R5,LSL #1 \ PREPARE R5 � RECIEVE IT
~#�R R5,R5,R4 \ MIX IT IN WITH R5
�MOV R2,#0 \ CLOCK LOW
�STR R2,[R1]
�SUBS R3,R3,#1
�
BNE LOOP1
�%MOV R2,#&20000 \ CHIP SELECT HIGH
�STR R2,[R1]
�#� R5,R5,#&FF \ MASK � START BIT
�\R5 NOW HAS SAMPLE
�*STRB R5,[R6],#1 \ PUT IT IN THE BUFFER
�)SUBS R7,R7,#1  \ DECREMENT BYTES � GO
�!BNE  TLOOP \ BACK �L ALL DONE
�
�	.exit
\PREPARE � EXIT

"MOV R2,#&200000 \ � T0 �ERRUPT
\STR R2,[R0,#&14] \ IRQ �
!LDR R2,[R0,#&18] \ � IRQ MASK
(� R2,R2,#&DF \ ENABLE T0
2MOV  R2,R2,LSL #16
< \STR R2,[R0,#&18] \ MASK REG
F
PTEQP R9,#0
ZMOVNV R0,R0
d-LDMFD R13!, {PC} \ BACK FROM �ST YOU CAME
n
�]
��
��
�

00000000  0d 00 0a 0e f4 20 3e 53  6d 61 54 65 73 74 0d 00  |..... >SmaTest..|
00000010  28 1a de 20 43 4f 44 45  25 20 26 34 30 30 2c 20  |(.. CODE% &400, |
00000020  42 50 25 20 36 34 30 30  0d 00 32 19 f1 20 8a 30  |BP% 6400..2.. .0|
00000030  2c 35 29 22 52 75 6e 20  54 68 65 20 52 49 53 43  |,5)"Run The RISC|
00000040  22 0d 00 3c 19 f1 20 8a  30 2c 38 29 22 42 79 20  |"..<.. .0,8)"By |
00000050  4d 69 6b 65 20 43 6f 6f  6b 22 0d 00 46 2d f1 20  |Mike Cook"..F-. |
00000060  8a 30 2c 31 30 29 22 53  6f 75 6e 64 20 53 61 6d  |.0,10)"Sound Sam|
00000070  70 6c 65 72 20 4f 73 63  69 6c 6c 6f 73 63 6f 70  |pler Oscilloscop|
00000080  65 20 56 30 2e 31 22 0d  00 50 31 f1 20 8a 30 2c  |e V0.1"..P1. .0,|
00000090  31 35 29 22 59 6f 75 20  6e 65 65 64 20 74 68 65  |15)"You need the|
000000a0  20 53 6f 75 6e 64 20 53  61 6d 70 6c 65 72 20 66  | Sound Sampler f|
000000b0  6f 72 20 74 68 69 73 22  0d 00 5a 1a f1 22 41 6e  |or this"..Z.."An|
000000c0  79 20 6b 65 79 20 74 6f  20 63 6f 6e 74 69 6e 75  |y key to continu|
000000d0  65 22 0d 00 6e 11 4e 65  77 48 25 3d a3 3a 53 57  |e"..n.NewH%=.:SW|
000000e0  25 3d 31 0d 00 aa 12 53  50 45 45 44 25 3d 30 3a  |%=1....SPEED%=0:|
000000f0  f2 5f 43 53 55 0d 00 e7  0c f2 5f 53 41 4d 50 4c  |._CSU....._SAMPL|
00000100  45 0d 00 e8 05 e0 0d 00  e9 04 0d 07 4e 0e dd 20  |E...........N.. |
00000110  f2 5f 53 41 4d 50 4c 45  0d 07 58 19 47 25 3d 42  |._SAMPLE..X.G%=B|
00000120  50 25 2b 33 32 30 2a 53  57 25 3a 48 25 3d 33 32  |P%+320*SW%:H%=32|
00000130  30 0d 07 62 0f 53 57 25  3d 53 57 25 20 82 20 31  |0..b.SW%=SW% . 1|
00000140  0d 07 6c 0b d6 20 53 41  4d 50 4e 0d 07 76 05 e1  |..l.. SAMPN..v..|
00000150  0d 07 80 04 0d 07 8a 19  dd 20 f2 5f 43 53 55 20  |......... ._CSU |
00000160  3a f4 20 43 4f 44 45 20  53 45 54 55 50 0d 07 94  |:. CODE SETUP...|
00000170  11 e3 20 41 3d 30 20 b8  20 32 20 88 20 32 0d 07  |.. A=0 . 2 . 2..|
00000180  9e 0c 50 25 3d 43 4f 44  45 25 0d 07 a8 05 5b 0d  |..P%=CODE%....[.|
00000190  07 b2 09 4f 50 54 20 41  0d 07 bc 1e 2e 54 56 41  |...OPT A.....TVA|
000001a0  4c 20 45 51 55 44 20 30  20 5c 20 54 52 49 47 47  |L EQUD 0 \ TRIGG|
000001b0  45 52 20 bb 55 45 0d 07  c6 1e 2e 53 50 45 31 20  |ER .UE.....SPE1 |
000001c0  45 51 55 44 20 30 20 5c  20 4c 53 42 20 ca 20 53  |EQUD 0 \ LSB . S|
000001d0  50 45 45 44 0d 07 d0 1e  2e 53 50 45 32 20 45 51  |PEED.....SPE2 EQ|
000001e0  55 44 20 30 20 5c 20 4d  53 42 20 ca 20 53 50 45  |UD 0 \ MSB . SPE|
000001f0  45 44 0d 07 da 0e 5c 20  47 41 54 48 45 52 20 d4  |ED....\ GATHER .|
00000200  0d 0b 90 04 0d 0b 9a 22  2e 53 41 4d 50 4e 20 5c  |.......".SAMPN \|
00000210  20 c7 96 20 48 41 52 44  57 41 52 45 20 53 41 4d  | .. HARDWARE SAM|
00000220  50 4c 45 49 4e 47 0d 0b  a4 14 53 54 4d 46 44 20  |PLEING....STMFD |
00000230  52 31 33 21 2c 7b 52 31  34 7d 0d 0b ae 0e 4d 4f  |R13!,{R14}....MO|
00000240  56 20 52 39 2c 52 31 35  0d 0b b8 14 53 57 49 20  |V R9,R15....SWI |
00000250  22 4f 53 5f 45 6e 74 65  72 4f 53 22 0d 0b c2 28  |"OS_EnterOS"...(|
00000260  54 45 51 50 20 52 31 35  2c 23 26 43 30 30 30 30  |TEQP R15,#&C0000|
00000270  30 33 20 5c 44 49 53 41  42 4c 45 20 a8 45 52 52  |03 \DISABLE .ERR|
00000280  55 50 54 53 0d 0b cc 0f  4d 4f 56 4e 56 20 52 30  |UPTS....MOVNV R0|
00000290  2c 52 30 0d 0b d6 29 4d  4f 56 20 52 30 2c 23 26  |,R0...)MOV R0,#&|
000002a0  33 32 30 30 30 30 30 20  5c 20 42 41 53 45 20 41  |3200000 \ BASE A|
000002b0  44 44 52 45 53 53 20 ca  20 49 4f 43 0d 0b e0 27  |DDRESS . IOC...'|
000002c0  4d 4f 56 20 52 31 2c 23  26 33 30 30 30 30 30 30  |MOV R1,#&3000000|
000002d0  20 5c 20 42 41 53 45 20  ca 20 f1 45 52 20 4c 41  | \ BASE . .ER LA|
000002e0  54 43 48 0d 0b ea 15 41  44 44 20 52 31 2c 52 31  |TCH....ADD R1,R1|
000002f0  2c 23 26 31 30 30 30 30  0d 0b f4 13 41 44 44 20  |,#&10000....ADD |
00000300  52 31 2c 52 31 2c 23 26  39 45 30 0d 0b ff 04 0d  |R1,R1,#&9E0.....|
00000310  0c 08 14 5c 20 48 4f 4c  44 20 e3 20 54 52 49 47  |...\ HOLD . TRIG|
00000320  47 45 52 0d 0c 12 0f 4c  44 52 20 52 32 2c 54 56  |GER....LDR R2,TV|
00000330  41 4c 0d 0c 1c 0d 43 4d  50 20 52 32 2c 23 30 0d  |AL....CMP R2,#0.|
00000340  0c 26 2c 42 45 51 20 54  52 55 4e 4e 20 5c 20 53  |.&,BEQ TRUNN \ S|
00000350  4b 49 50 20 54 48 49 53  20 e7 20 54 52 49 47 47  |KIP THIS . TRIGG|
00000360  45 52 20 bb 55 45 20 49  53 20 30 0d 0c 30 0a 2e  |ER .UE IS 0..0..|
00000370  54 48 4f 4c 44 0d 0c 3a  1f 4d 4f 56 20 52 32 2c  |THOLD..:.MOV R2,|
00000380  23 30 20 5c 20 43 48 49  50 20 53 45 4c 45 43 54  |#0 \ CHIP SELECT|
00000390  20 4c 4f 57 0d 0c 44 0f  53 54 52 20 52 32 2c 5b  | LOW..D.STR R2,[|
000003a0  52 31 5d 0d 0c 4e 1c 4d  4f 56 20 52 33 2c 23 26  |R1]..N.MOV R3,#&|
000003b0  41 20 5c 20 42 49 54 53  20 b8 20 f3 20 49 4e 0d  |A \ BITS . . IN.|
000003c0  0c 58 21 4d 4f 56 20 52  35 2c 23 30 20 5c 20 43  |.X!MOV R5,#0 \ C|
000003d0  4f 4c 4c 45 43 54 20 42  49 54 53 20 48 45 52 45  |OLLECT BITS HERE|
000003e0  0d 0c 62 0a 2e 4c 4f 4f  50 32 0d 0c 6c 18 4c 44  |..b..LOOP2..l.LD|
000003f0  52 20 52 34 2c 5b 52 31  2c 23 34 5d 20 5c 20 a5  |R R4,[R1,#4] \ .|
00000400  20 dc 0d 0c 76 1f 4d 4f  56 20 52 32 2c 23 26 31  | ...v.MOV R2,#&1|
00000410  30 30 30 30 20 5c 20 43  4c 4f 43 4b 20 48 49 47  |0000 \ CLOCK HIG|
00000420  48 0d 0c 80 1f 53 54 52  20 52 32 2c 5b 52 31 5d  |H....STR R2,[R1]|
00000430  20 5c 20 50 55 54 20 4f  55 54 20 b8 20 f1 45 52  | \ PUT OUT . .ER|
00000440  0d 0c 8a 14 4d 4f 56 20  52 34 2c 52 34 2c 4c 53  |....MOV R4,R4,LS|
00000450  52 20 23 36 0d 0c 94 1b  80 20 52 34 2c 52 34 2c  |R #6..... R4,R4,|
00000460  23 31 20 5c 20 4d 41 53  4b 20 dc 20 42 49 54 0d  |#1 \ MASK . BIT.|
00000470  0c 9e 2e 4d 4f 56 20 52  35 2c 52 35 2c 4c 53 4c  |...MOV R5,R5,LSL|
00000480  20 23 31 20 5c 20 50 52  45 50 41 52 45 20 52 35  | #1 \ PREPARE R5|
00000490  20 b8 20 52 45 43 49 45  56 45 20 49 54 0d 0c a8  | . RECIEVE IT...|
000004a0  23 84 52 20 52 35 2c 52  35 2c 52 34 20 5c 20 4d  |#.R R5,R5,R4 \ M|
000004b0  49 58 20 49 54 20 49 4e  20 57 49 54 48 20 52 35  |IX IT IN WITH R5|
000004c0  0d 0c b2 19 4d 4f 56 20  52 32 2c 23 30 20 5c 20  |....MOV R2,#0 \ |
000004d0  43 4c 4f 43 4b 20 4c 4f  57 0d 0c bc 0f 53 54 52  |CLOCK LOW....STR|
000004e0  20 52 32 2c 5b 52 31 5d  0d 0c c6 11 53 55 42 53  | R2,[R1]....SUBS|
000004f0  20 52 33 2c 52 33 2c 23  31 0d 0c d0 0d 42 4e 45  | R3,R3,#1....BNE|
00000500  20 4c 4f 4f 50 32 0d 0c  da 25 4d 4f 56 20 52 32  | LOOP2...%MOV R2|
00000510  2c 23 26 32 30 30 30 30  20 5c 20 43 48 49 50 20  |,#&20000 \ CHIP |
00000520  53 45 4c 45 43 54 20 48  49 47 48 0d 0c e4 0f 53  |SELECT HIGH....S|
00000530  54 52 20 52 32 2c 5b 52  31 5d 0d 0c ee 23 80 20  |TR R2,[R1]...#. |
00000540  52 35 2c 52 35 2c 23 26  46 46 20 5c 20 4d 41 53  |R5,R5,#&FF \ MAS|
00000550  4b 20 87 20 53 54 41 52  54 20 42 49 54 0d 0c f8  |K . START BIT...|
00000560  16 5c 52 35 20 4e 4f 57  20 48 41 53 20 53 41 4d  |.\R5 NOW HAS SAM|
00000570  50 4c 45 0d 0d 02 0f 4c  44 52 20 52 32 2c 54 56  |PLE....LDR R2,TV|
00000580  41 4c 0d 0d 0c 0d 43 4d  50 20 52 32 2c 52 35 0d  |AL....CMP R2,R5.|
00000590  0d 16 0d 42 4c 53 20 54  48 4f 4c 44 0d 0d 20 04  |...BLS THOLD.. .|
000005a0  0d 0d 2a 0a 2e 54 52 55  4e 4e 0d 0d 34 1d 4c 44  |..*..TRUNN..4.LD|
000005b0  52 20 52 32 2c 53 50 45  32 20 5c 20 54 31 20 bb  |R R2,SPE2 \ T1 .|
000005c0  55 45 20 48 49 47 48 0d  0d 3e 24 53 54 52 20 52  |UE HIGH..>$STR R|
000005d0  32 2c 5b 52 30 2c 23 26  34 34 5d 20 5c 20 54 30  |2,[R0,#&44] \ T0|
000005e0  20 4c 41 54 43 48 20 48  49 47 48 0d 0d 48 1c 4c  | LATCH HIGH..H.L|
000005f0  44 52 20 52 32 2c 53 50  45 31 20 5c 20 54 31 20  |DR R2,SPE1 \ T1 |
00000600  bb 55 45 20 4c 4f 57 0d  0d 52 23 53 54 52 20 52  |.UE LOW..R#STR R|
00000610  32 2c 5b 52 30 2c 23 26  34 30 5d 20 5c 20 54 30  |2,[R0,#&40] \ T0|
00000620  20 4c 41 54 43 48 20 4c  4f 57 0d 0d 5c 04 0d 0d  | LATCH LOW..\...|
00000630  66 21 4c 44 52 20 52 32  2c 5b 52 30 2c 23 26 31  |f!LDR R2,[R0,#&1|
00000640  38 5d 20 5c 20 a5 20 49  52 51 20 4d 41 53 4b 0d  |8] \ . IRQ MASK.|
00000650  0d 70 1d 84 52 20 52 32  2c 52 32 2c 23 26 32 30  |.p..R R2,R2,#&20|
00000660  20 5c 20 45 4e 41 42 4c  45 20 54 30 0d 0d 7a 16  | \ ENABLE T0..z.|
00000670  4d 4f 56 20 20 52 32 2c  52 32 2c 4c 53 4c 20 23  |MOV  R2,R2,LSL #|
00000680  31 36 0d 0d 84 1f 53 54  52 20 52 32 2c 5b 52 30  |16....STR R2,[R0|
00000690  2c 23 26 31 38 5d 20 5c  20 4d 41 53 4b 20 52 45  |,#&18] \ MASK RE|
000006a0  47 0d 0d 8e 04 0d 0d 98  22 4d 4f 56 20 52 32 2c  |G......."MOV R2,|
000006b0  23 26 32 30 30 30 30 30  20 5c 20 d8 20 54 30 20  |#&200000 \ . T0 |
000006c0  a8 45 52 52 55 50 54 0d  0d a2 1c 53 54 52 20 52  |.ERRUPT....STR R|
000006d0  32 2c 5b 52 30 2c 23 26  31 34 5d 20 5c 20 49 52  |2,[R0,#&14] \ IR|
000006e0  51 20 d8 0d 0d ac 1d 53  54 52 20 20 52 32 2c 5b  |Q .....STR  R2,[|
000006f0  52 30 2c 23 26 34 38 5d  20 5c 20 47 4f 20 54 30  |R0,#&48] \ GO T0|
00000700  0d 0d b6 04 0d 0d c0 22  2e 54 4c 4f 4f 50 20 5c  |.......".TLOOP \|
00000710  20 44 45 4c 41 59 20 4c  4f 4f 50 20 e3 20 54 49  | DELAY LOOP . TI|
00000720  4d 45 52 20 54 30 0d 0d  ca 15 4c 44 52 42 20 52  |MER T0....LDRB R|
00000730  32 2c 5b 52 30 2c 23 26  31 30 5d 0d 0d d4 0f 54  |2,[R0,#&10]....T|
00000740  53 54 20 52 32 2c 23 26  32 30 0d 0d de 0d 42 45  |ST R2,#&20....BE|
00000750  51 20 54 4c 4f 4f 50 0d  0d e8 22 4d 4f 56 20 52  |Q TLOOP..."MOV R|
00000760  32 2c 23 26 32 30 30 30  30 30 20 5c 20 d8 20 54  |2,#&200000 \ . T|
00000770  30 20 a8 45 52 52 55 50  54 0d 0d f2 1c 53 54 52  |0 .ERRUPT....STR|
00000780  20 52 32 2c 5b 52 30 2c  23 26 31 34 5d 20 5c 20  | R2,[R0,#&14] \ |
00000790  49 52 51 20 d8 0d 0d fc  04 0d 0d fd 0a 42 20 65  |IRQ .........B e|
000007a0  78 69 74 0d 0e 06 14 5c  20 54 41 4b 45 20 ee 45  |xit....\ TAKE .E|
000007b0  20 53 41 4d 50 4c 45 0d  0e 10 1f 4d 4f 56 20 52  | SAMPLE....MOV R|
000007c0  32 2c 23 30 20 5c 20 43  48 49 50 20 53 45 4c 45  |2,#0 \ CHIP SELE|
000007d0  43 54 20 4c 4f 57 0d 0e  1a 0f 53 54 52 20 52 32  |CT LOW....STR R2|
000007e0  2c 5b 52 31 5d 0d 0e 24  1c 4d 4f 56 20 52 33 2c  |,[R1]..$.MOV R3,|
000007f0  23 26 41 20 5c 20 42 49  54 53 20 b8 20 f3 20 49  |#&A \ BITS . . I|
00000800  4e 0d 0e 2e 21 4d 4f 56  20 52 35 2c 23 30 20 5c  |N...!MOV R5,#0 \|
00000810  20 43 4f 4c 4c 45 43 54  20 42 49 54 53 20 48 45  | COLLECT BITS HE|
00000820  52 45 0d 0e 38 0a 2e 4c  4f 4f 50 31 0d 0e 42 18  |RE..8..LOOP1..B.|
00000830  4c 44 52 20 52 34 2c 5b  52 31 2c 23 34 5d 20 5c  |LDR R4,[R1,#4] \|
00000840  20 a5 20 dc 0d 0e 4c 1f  4d 4f 56 20 52 32 2c 23  | . ...L.MOV R2,#|
00000850  26 31 30 30 30 30 20 5c  20 43 4c 4f 43 4b 20 48  |&10000 \ CLOCK H|
00000860  49 47 48 0d 0e 56 1f 53  54 52 20 52 32 2c 5b 52  |IGH..V.STR R2,[R|
00000870  31 5d 20 5c 20 50 55 54  20 4f 55 54 20 b8 20 f1  |1] \ PUT OUT . .|
00000880  45 52 0d 0e 60 14 4d 4f  56 20 52 34 2c 52 34 2c  |ER..`.MOV R4,R4,|
00000890  4c 53 52 20 23 36 0d 0e  6a 1b 80 20 52 34 2c 52  |LSR #6..j.. R4,R|
000008a0  34 2c 23 31 20 5c 20 4d  41 53 4b 20 dc 20 42 49  |4,#1 \ MASK . BI|
000008b0  54 0d 0e 74 2e 4d 4f 56  20 52 35 2c 52 35 2c 4c  |T..t.MOV R5,R5,L|
000008c0  53 4c 20 23 31 20 5c 20  50 52 45 50 41 52 45 20  |SL #1 \ PREPARE |
000008d0  52 35 20 b8 20 52 45 43  49 45 56 45 20 49 54 0d  |R5 . RECIEVE IT.|
000008e0  0e 7e 23 84 52 20 52 35  2c 52 35 2c 52 34 20 5c  |.~#.R R5,R5,R4 \|
000008f0  20 4d 49 58 20 49 54 20  49 4e 20 57 49 54 48 20  | MIX IT IN WITH |
00000900  52 35 0d 0e 88 19 4d 4f  56 20 52 32 2c 23 30 20  |R5....MOV R2,#0 |
00000910  5c 20 43 4c 4f 43 4b 20  4c 4f 57 0d 0e 92 0f 53  |\ CLOCK LOW....S|
00000920  54 52 20 52 32 2c 5b 52  31 5d 0d 0e 9c 11 53 55  |TR R2,[R1]....SU|
00000930  42 53 20 52 33 2c 52 33  2c 23 31 0d 0e a6 0d 42  |BS R3,R3,#1....B|
00000940  4e 45 20 4c 4f 4f 50 31  0d 0e b0 25 4d 4f 56 20  |NE LOOP1...%MOV |
00000950  52 32 2c 23 26 32 30 30  30 30 20 5c 20 43 48 49  |R2,#&20000 \ CHI|
00000960  50 20 53 45 4c 45 43 54  20 48 49 47 48 0d 0e ba  |P SELECT HIGH...|
00000970  0f 53 54 52 20 52 32 2c  5b 52 31 5d 0d 0e c4 23  |.STR R2,[R1]...#|
00000980  80 20 52 35 2c 52 35 2c  23 26 46 46 20 5c 20 4d  |. R5,R5,#&FF \ M|
00000990  41 53 4b 20 87 20 53 54  41 52 54 20 42 49 54 0d  |ASK . START BIT.|
000009a0  0e ce 16 5c 52 35 20 4e  4f 57 20 48 41 53 20 53  |...\R5 NOW HAS S|
000009b0  41 4d 50 4c 45 0d 0e d8  2a 53 54 52 42 20 52 35  |AMPLE...*STRB R5|
000009c0  2c 5b 52 36 5d 2c 23 31  20 5c 20 50 55 54 20 49  |,[R6],#1 \ PUT I|
000009d0  54 20 49 4e 20 54 48 45  20 42 55 46 46 45 52 0d  |T IN THE BUFFER.|
000009e0  0e e2 29 53 55 42 53 20  52 37 2c 52 37 2c 23 31  |..)SUBS R7,R7,#1|
000009f0  20 20 5c 20 44 45 43 52  45 4d 45 4e 54 20 42 59  |  \ DECREMENT BY|
00000a00  54 45 53 20 b8 20 47 4f  0d 0e ec 21 42 4e 45 20  |TES . GO...!BNE |
00000a10  20 54 4c 4f 4f 50 20 5c  20 42 41 43 4b 20 fd 4c  | TLOOP \ BACK .L|
00000a20  20 41 4c 4c 20 44 4f 4e  45 0d 0e f6 04 0d 0e f7  | ALL DONE.......|
00000a30  09 2e 65 78 69 74 0d 0f  00 13 5c 50 52 45 50 41  |..exit....\PREPA|
00000a40  52 45 20 b8 20 45 58 49  54 0d 0f 0a 22 4d 4f 56  |RE . EXIT..."MOV|
00000a50  20 52 32 2c 23 26 32 30  30 30 30 30 20 5c 20 d8  | R2,#&200000 \ .|
00000a60  20 54 30 20 a8 45 52 52  55 50 54 0d 0f 14 1d 5c  | T0 .ERRUPT....\|
00000a70  53 54 52 20 52 32 2c 5b  52 30 2c 23 26 31 34 5d  |STR R2,[R0,#&14]|
00000a80  20 5c 20 49 52 51 20 d8  0d 0f 1e 21 4c 44 52 20  | \ IRQ ....!LDR |
00000a90  52 32 2c 5b 52 30 2c 23  26 31 38 5d 20 5c 20 a5  |R2,[R0,#&18] \ .|
00000aa0  20 49 52 51 20 4d 41 53  4b 0d 0f 28 1c 80 20 52  | IRQ MASK..(.. R|
00000ab0  32 2c 52 32 2c 23 26 44  46 20 5c 20 45 4e 41 42  |2,R2,#&DF \ ENAB|
00000ac0  4c 45 20 54 30 0d 0f 32  16 4d 4f 56 20 20 52 32  |LE T0..2.MOV  R2|
00000ad0  2c 52 32 2c 4c 53 4c 20  23 31 36 0d 0f 3c 20 5c  |,R2,LSL #16..< \|
00000ae0  53 54 52 20 52 32 2c 5b  52 30 2c 23 26 31 38 5d  |STR R2,[R0,#&18]|
00000af0  20 5c 20 4d 41 53 4b 20  52 45 47 0d 0f 46 04 0d  | \ MASK REG..F..|
00000b00  0f 50 0e 54 45 51 50 20  52 39 2c 23 30 0d 0f 5a  |.P.TEQP R9,#0..Z|
00000b10  0f 4d 4f 56 4e 56 20 52  30 2c 52 30 0d 0f 64 2d  |.MOVNV R0,R0..d-|
00000b20  4c 44 4d 46 44 20 52 31  33 21 2c 20 7b 50 43 7d  |LDMFD R13!, {PC}|
00000b30  20 5c 20 42 41 43 4b 20  46 52 4f 4d 20 c9 53 54  | \ BACK FROM .ST|
00000b40  20 59 4f 55 20 43 41 4d  45 0d 0f 6e 04 0d 10 86  | YOU CAME..n....|
00000b50  05 5d 0d 10 90 05 ed 0d  10 c2 05 e1 0d ff        |.]............|
00000b5e