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DTMF05.LST
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1990-01-08
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17KB
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299 lines
M6805 Portable Cross Assembler 0.05 MS-DOS/PC-DOS Page 1
Mon Jan 08 16:08:42 1990
Command line:
C:\DTMF\PASM05.EXE -l dtmf05.lst dtmf05.asm
Options list:
ON - b - Printing of macro definitions
ON - c - Printing of macro calls
OFF - d - Placing of symbolic debugging information in COFF
OFF - e - Printing of macro expansions
ON - f - Printing of conditional directives
OFF - g - Printing of generated constants list
OFF - q - Expanding and printing of structured syntax
OFF - s - Printing of symbol table
OFF - u - Printing of conditional unassembled source
OFF - x - Printing of cross reference table
OFF - m - Suppress printing of error messages
ON - w - Printing of warning messages
OFF - v - Suppress printing of updated status
OFF - y - Enabling of sgs extensions
ON - o - Create object code
ON - - Formatting of source line listing
Create listing file - l - dtmf05.lst
Xdefs:
NONE
Xrefs:
NONE
Input file(s): dtmf05.asm (191 lines)
sine56.asm (32 lines)
Output file: dtmf05.o
Listing file: dtmf05.lst
M6805 Portable Cross Assembler 0.05 dtmf05.asm Page 2
Mon Jan 08 16:08:42 1990
Options - MD,MC,NOG,NOU,W,NOMEX,CL,FMT,O
LINE S PC OPCO OPERANDS S LABEL MNEMO OPERANDS COMMENT
00001 * File: DTMF.ASM
00002 * Driver routines for 68HC05 to produce DTMF tones in software
00003
00004 * this version uses a fixed 256 byte sine table, and a fixed 128 us sample time
00005 * this allows operation under interrupt control
00006
00007 * hardware requirements: 8 bit DAC on port a of 68HC05
00008 * To use, do a JSR to DTINIT to set up timer
00009 * then do a JSR to location DTMF with the digit in the lower nibble of
00010 * Accumulator A
00011 * digit values: 0-9, 10 = #, 11 = *, 12-15 represent a through d
00012 * A 60 ms tone burst will be generated, followed by 60 ms of silence
00013 * The location TTIME may be altered to change this timing
00014
00015 opt mul allow multiply instruction
00016 asct
00017
00018 * define test to be non-zero to create test version
00019
00020 A 0000 0001 A test equ 1
00021
00022 * First a few definitions
00023
00024 A 0000 003c A deftt equ 60 default tone time (60 ms)
00025 A 0000 0000 A dac equ $0 DAC output on port a
00026 A 0000 0004 A dacddr equ $4 data direction register for port with DAC
00027 A 0000 0001 A portb equ 1 port b address
00028 A 0000 0005 A ddrb equ 5 ... and its ddr
00029 A 0000 0018 A ctrhi equ $18 timer free running counter
00030 A 0000 0019 A ctrlo equ $19
00031 A 0000 0016 A ocrhi equ $16 output compare register
00032 A 0000 0017 A ocrlo equ $17
00033 A 0000 0012 A tcr equ $12 timer control register
00034 A 0000 0040 A ocie equ $40 output compare interrupt enable
00035 A 0000 0013 A tsr equ $13 timer status register
00036 A 0000 0006 A ocf equ 6 output compare flag bit position
00037 A 0000 0040 A intcnt equ 128/2 count to load into output compare
00038
00039 A 0000 0017 A row1 equ 23 row intervals
00040 A 0000 0019 A row2 equ 25
00041 A 0000 001c A row3 equ 28
00042 A 0000 001f A row4 equ 31
00043
00044 A 0000 0028 A col1 equ 40 column intervals
00045 A 0000 002c A col2 equ 44
00046 A 0000 0030 A col3 equ 48
00047 A 0000 0036 A col4 equ 54
00048
00049 A 0050 org $50 RAM scratchpad - move this to fit your system
00050 A 0050 01 A ttime rmb 1 tone time in milliseconds
00051 A 0051 02 A ttctr rmb 2 time counter
00052 A 0053 02 A ttsave rmb 2 save the count value for interdigit pause
M6805 Portable Cross Assembler 0.05 dtmf05.asm Page 3
Mon Jan 08 16:08:42 1990
Options - MD,MC,NOG,NOU,W,NOMEX,CL,FMT,O
LINE S PC OPCO OPERANDS S LABEL MNEMO OPERANDS COMMENT
00053 A 0055 01 A ttflag rmb 1 non zero means generate tones
00054 A 0056 01 A rowptr rmb 1 next row sample to load
00055 A 0057 01 A colptr rmb 1 ditto for columns
00056 A 0058 01 A rowint rmb 1 row interval - added to row counter each sample
00057 A 0059 01 A colint rmb 1 ditto for column
00058 A 005a 01 A sample rmb 1 temp storage for sample
00059
00060 A 1000 org $1000
00061 A 1000 9b dtinit sei disable interrupts
00062 ifne test
00063 A 1001 9c rsp set default stack
00064 endc
00065 A 1002 a6 3c A lda #deftt set up time counter
00066 A 1004 b7 50 A sta ttime
00067 A 1006 a6 ff A lda #$ff set up ddr - all outputs
00068 A 1008 b7 04 A sta dacddr
00069 ifne test
00070 A 100a b7 05 A sta ddrb set up port b to flag entry to interrupt
00071 A 100c 3f 01 A clr portb
00072 endc
00073 A 100e a6 80 A lda #$80 set dac to halfway point
00074 A 1010 b7 00 A sta dac
00075 A 1012 3f 55 A clr ttflag no tones please
00076 A 1014 a6 40 A lda #ocie enable output compare interrupt
00077 A 1016 b7 12 A sta tcr
00078 A 1018 b6 18 A lda ctrhi freeze counter
00079 A 101a b7 16 A sta ocrhi
00080 A 101c b6 19 A lda ctrlo
00081 A 101e ab 40 A add #intcnt
00082 A 1020 24 02 1024 bcc dti1
00083 A 1022 3c 16 A inc ocrhi
00084 A 1024 3d 13 A dti1 tst tsr
00085 A 1026 b7 17 A sta ocrlo
00086 A 1028 9a cli
00087 ifeq test
00089 endc
00090 ifne test
00091 A 1029 9d nop
00092 A 102a 20 fe 102a here bra here endless loop
00093 endc
00094
00095 A 102c a4 0f A dtmf and #$0f clear out junk
00096 A 102e 97 tax get row interval
00097 A 102f d6 10bc A lda rowtab,x
00098 A 1032 b7 58 A sta rowint
00099 A 1034 d6 10ac A lda coltab,x and column
00100 A 1037 b7 59 A sta colint
00101 A 1039 3f 56 A clr rowptr start at 0
00102 A 103b 3f 57 A clr colptr
00103 A 103d b6 50 A lda ttime start tone - set time
00104 A 103f ae fa A ldx #250 adjust for # of samples in (ttime) msec
00105 A 1041 42 mul (125/128) * ttime * 8
M6805 Portable Cross Assembler 0.05 dtmf05.asm Page 4
Mon Jan 08 16:08:42 1990
Options - MD,MC,NOG,NOU,W,NOMEX,CL,FMT,O
LINE S PC OPCO OPERANDS S LABEL MNEMO OPERANDS COMMENT
00106 A 1042 4f clra x now contains adjusted sample count
00107 A 1043 58 aslx multiply by 8 to produce sample count
00108 A 1044 49 rola
00109 A 1045 58 aslx
00110 A 1046 49 rola
00111 A 1047 58 aslx
00112 A 1048 49 rola
00113 A 1049 43 coma
00114 A 104a 50 negx negate so tisr can increment
00115 A 104b 25 01 104e bcs dtmf05 carry if necessary
00116 A 104d 4c inca
00117 A 104e b7 51 A dtmf05 sta ttctr put into timer
00118 A 1050 bf 52 A stx ttctr+1
00119 A 1052 b7 53 A sta ttsave save for pause time
00120 A 1054 bf 54 A stx ttsave+1
00121 A 1056 3c 55 A inc ttflag start tones
00122 A 1058 00 55fd 1058 dtmf1 brset 0,ttflag,dtmf1 loop till tone complete
00123 A 105b b6 53 A lda ttsave now do pause
00124 A 105d b7 51 A sta ttctr
00125 A 105f b6 54 A lda ttsave+1
00126 A 1061 b7 52 A sta ttctr+1
00127 A 1063 3f 58 A clr rowint do the pause by not moving pointers
00128 A 1065 3f 59 A clr colint
00129 A 1067 3c 55 A inc ttflag start pause
00130 A 1069 00 55fd 1069 dtmf2 brset 0,ttflag,dtmf2
00131 A 106c 81 rts done
00132
00133 * timer interrupt service routine
00134 * if ttctr != 0, then output next sample to dac
00135
00136 tisr ifne test
00137 A 106d 10 01 A bset 0,portb
00138 endc
00139 A 106f b6 17 A lda ocrlo (3) add timer count
00140 A 1071 ab 40 A add #intcnt (2)
00141 A 1073 24 02 1077 bcc tisr2 (3) do carry if needed
00142 A 1075 3c 16 A inc ocrhi (5)
00143 A 1077 3d 13 A tisr2 tst tsr (4) clear flag
00144 A 1079 b7 17 A sta ocrlo (4)
00145 A 107b 01 552b 10a9 brclr 0,ttflag,tisr1 (5) don't generate tone if flag cleared
00146 A 107e be 56 A ldx rowptr (3) get next row sample
00147 A 1080 d6 10cc A lda sine,x (5)
00148 A 1083 b7 5a A sta sample (4)
00149 A 1085 9f txa (2) update pointer
00150 A 1086 bb 58 A add rowint (3)
00151 A 1088 b7 56 A sta rowptr (4)
00152 A 108a be 57 A ldx colptr (3) get next col sample
00153 A 108c d6 10cc A lda sine,x (5)
00154 A 108f 47 asra (3) divide by 4
00155 A 1090 47 asra (3) divide by 4
00156 A 1091 db 10cc A add sine,x (5) now have 1.25 * column sample
00157 A 1094 bb 5a A add sample (3) add to row sample
M6805 Portable Cross Assembler 0.05 dtmf05.asm Page 5
Mon Jan 08 16:08:42 1990
Options - MD,MC,NOG,NOU,W,NOMEX,CL,FMT,O
LINE S PC OPCO OPERANDS S LABEL MNEMO OPERANDS COMMENT
00158 A 1096 a8 80 A eor #$80 (2) fix sign bit
00159 A 1098 b7 00 A sta dac (4) out it goes
00160 A 109a 9f txa (2) update pointer
00161 A 109b bb 59 A add colint (3)
00162 A 109d b7 57 A sta colptr (4)
00163 A 109f 3c 52 A inc ttctr+1 (5) increment timer
00164 A 10a1 26 06 10a9 bne tisr1 (3) carry needed?
00165 A 10a3 3c 51 A inc ttctr (5) yes - do it
00166 A 10a5 26 02 10a9 bne tisr1 (3) overflow?
00167 A 10a7 3f 55 A clr ttflag yes - turn off tones
00168 tisr1 ifne test
00169 A 10a9 11 01 A bclr 0,portb
00170 endc
00171 A 10ab 80 rti (9)
00172 * (7) interrupt response
00173 * ===
00174 * 116 cycles when generating tones
00175 * total overhead at 2 MHz E clock = 116/256 == 45%
00176
00177 A 10ac 2c282c30 A coltab fcb col2,col1,col2,col3 0,1,2,3
00178 A 10b0 282c30 A fcb col1,col2,col3 4,5,6
00179 A 10b3 282c30 A fcb col1,col2,col3 7,8,9
00180 A 10b6 2830 A fcb col1,col3 #,*
00181 A 10b8 36363636 A fcb col4,col4,col4,col4 a,b,c,d
00182
00183 A 10bc 1f171717 A rowtab fcb row4,row1,row1,row1 0,1,2,3
00184 A 10c0 191919 A fcb row2,row2,row2 4,5,6
00185 A 10c3 1c1c1c A fcb row3,row3,row3 7,8,9
00186 A 10c6 1f1f A fcb row4,row4 #,*
00187 A 10c8 17191c1f A fcb row1,row2,row3,row4 a,b,c,d
00188
00189 include sine56.asm
00001 A 10cc 00010304 A sine fcb 0,1,3,4,5,7,8,10
00002 A 10d4 0b0c0e0f A fcb 11,12,14,15,16,18,19,20
00003 A 10dc 15171819 A fcb 21,23,24,25,26,28,29,30
00004 A 10e4 1f202122 A fcb 31,32,33,34,36,37,38,39
00005 A 10ec 2829292a A fcb 40,41,41,42,43,44,45,46
00006 A 10f4 2f2f3031 A fcb 47,47,48,49,49,50,51,51
00007 A 10fc 34343535 A fcb 52,52,53,53,54,54,54,55
00008 A 1104 37373738 A fcb 55,55,55,56,56,56,56,56
00009 A 110c 38383838 A fcb 56,56,56,56,56,56,55,55
00010 A 1114 37373636 A fcb 55,55,54,54,54,53,53,52
00011 A 111c 34333332 A fcb 52,51,51,50,49,49,48,47
00012 A 1124 2f2e2d2c A fcb 47,46,45,44,43,42,41,41
00013 A 112c 28272625 A fcb 40,39,38,37,36,34,33,32
00014 A 1134 1f1e1d1c A fcb 31,30,29,28,26,25,24,23
00015 A 113c 15141312 A fcb 21,20,19,18,16,15,14,12
00016 A 1144 0b0a0807 A fcb 11,10,8,7,5,4,3,1
00017 A 114c 00fffdfc A fcb 0,-1,-3,-4,-5,-7,-8,-10
00018 A 1154 f5f4f2f1 A fcb -11,-12,-14,-15,-16,-18,-19,-20
00019 A 115c ebe9e8e7 A fcb -21,-23,-24,-25,-26,-28,-29,-30
00020 A 1164 e1e0dfde A fcb -31,-32,-33,-34,-36,-37,-38,-39
M6805 Portable Cross Assembler 0.05 sine56.asm Page 6
Mon Jan 08 16:08:42 1990
Options - MD,MC,NOG,NOU,W,NOMEX,CL,FMT,O
LINE S PC OPCO OPERANDS S LABEL MNEMO OPERANDS COMMENT
00021 A 116c d8d7d7d6 A fcb -40,-41,-41,-42,-43,-44,-45,-46
00022 A 1174 d1d1d0cf A fcb -47,-47,-48,-49,-49,-50,-51,-51
00023 A 117c cccccbcb A fcb -52,-52,-53,-53,-54,-54,-54,-55
00024 A 1184 c9c9c9c8 A fcb -55,-55,-55,-56,-56,-56,-56,-56
00025 A 118c c8c8c8c8 A fcb -56,-56,-56,-56,-56,-56,-55,-55
00026 A 1194 c9c9caca A fcb -55,-55,-54,-54,-54,-53,-53,-52
00027 A 119c cccdcdce A fcb -52,-51,-51,-50,-49,-49,-48,-47
00028 A 11a4 d1d2d3d4 A fcb -47,-46,-45,-44,-43,-42,-41,-41
00029 A 11ac d8d9dadb A fcb -40,-39,-38,-37,-36,-34,-33,-32
00030 A 11b4 e1e2e3e4 A fcb -31,-30,-29,-28,-26,-25,-24,-23
00031 A 11bc ebecedee A fcb -21,-20,-19,-18,-16,-15,-14,-12
00032 A 11c4 f5f6f8f9 A fcb -11,-10,-8,-7,-5,-4,-3,-1
00190
00191 end
Total number of errors: 0
Total number of warnings: 0
Total number of lines: 223
Number of bytes in section ASCT: 471
Number of bytes in program: 471
