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EXMP2B
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 » Personal collection » Acorn DFS disks » dfs_box03_disk12_bcpl.scp |
| Filename: | EXMP2B |
| Read OK: | ✔ |
| File size: | 1143 bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
section "EXMP2"
get "exmphdr"
// This section of EXAMPLE contains the procedure to play a tune.
// PLAYTUNE uses the ENVELOPE and SOUND procedures to play a simple tune. The
// tune is stored in a string. Each note is represented by 3 characters - the
// octave number, the note (a-g) and +, - or space for sharp, flat or
// natural. The note is in lower case for a quaver and upper case for a
// crotchet. The first note in a bar is preceded by '!'. The string is assumed
// to be valid.
let playtune() be
$( let envnumber = 1 // envelope to use
let pitch = ? // pitch parameter for SOUND
let sbuffsz = adval(-6) // size of sound buffer 1 (number of free slots)
let soundvec = vec 3 // parameter for SOUND
let tune = "!3b-*
*!4e-4e-4e-4e-4e-4e-*
*!4d 4f 4b-4b-4a-4f *
*!4e-4e-4e-4e-4d 4e-*
*!4f 3b-3b-3B-3b-*
*!4e-4e-4e-4e-4e-4e-*
*!4d 4f 4b-4b-4a-4f *
*!4g 4b-4e-4f 4e-4f *
*!4e-3e-3e-3E-"
// NOTEVAL is a table of the pitch for the notes in one octave,
// starting with A and taking C as 0.
let noteval = table 36, 44, 0, 8, 16, 20, 28
// Set up screen display then set up envelopes. Envelope 1
// is for quaver. Envelope 2 is for crotchet. Envelope 3
// is for accented quaver at start of bar. (There are no
// accented crotchets.)
dodisplay()
envelope(table 1, 2, 0, 0, 0, 0, 0, 0, 30, -2, -127, -127, 120, 105)
envelope(table 2, 2, 0, 0, 0, 0, 0, 0, 60, -6, -30, -127, 120, 60)
envelope(table 3, 2, 0, 0, 0, 0, 0, 0, 64, -10, -65, -127, 126, 59)
soundvec!0 := 1 // initialise channel number
// Process each character in the tune string.
for i = 1 to tune%0 do
$( let ch = tune%i
test '1' <= ch <= '7' then
// Octave number - initialise pitch.
pitch := 48*(ch-'0') - 91
else test 'a' <= ch <= 'g' then
// Note (quaver) - update pitch and leave envelope as 1 (or 3).
pitch := pitch + noteval!(ch-'a')
else test 'A' <= ch <= 'G' then
// Note (crotchet) - update pitch and select envelope 2.
$( pitch := pitch + noteval!(ch-'A')
envnumber := 2
$)
else test ch = '!' then
// Start of bar so set envelope 3 for following note.
envnumber := 3
else
// Assume '+', '-' or space so adjust pitch for sharp or
// flat if appropriate then play the note.
$( test ch = '+' then
pitch := pitch + 4
else if ch = '-' then
pitch := pitch - 4
soundvec!1 := envnumber
soundvec!2 := pitch
soundvec!3 := envnumber = 2 -> 6, 3 // duration (longer for crotchet)
sound(soundvec)
envnumber := 1 // reset envelope number to quaver.
$)
$) // back for next character
// All notes put in buffer. Wait until they have been played
// before returning to the menu.
until adval(-6) = sbuffsz loop // wait for tune to end
$)
// DISPNOTE displays a note symbol in flashing white at a specified x position.
and dispnote(x) be
$( let chartab = table 160,160,234,228, // 4x5 array of graphics chars
141,160,234,160, // double height
141,160,234,160,
160,248,254,160,
160,181,234,160,
160,171,167,160
for i=0 to 5 do
$( txtcursor(x, 3+i) // position character on line 3
wrbin(136) // flashing
wrbin(151) // graphic white
for j=4*i to 4*i+3 do
wrbin(chartab!j)
wrbin(137) // steady
$)
$)
// DODISPLAY sets up the display.
and dodisplay() be
$( mode(7)
for i = 0 to 1 do // double height title
$( txtcursor(10, i+4)
writes("*x8D*x81*x9D*x86M U S I C *x9C")
$)
dispnote(1); dispnote(29) // note symbols
txtcursor(1, 10)
for i = 0 to 14 do
$( wrbin(129 + (i rem 3)) // select one of three colours
writes("MUSIC")
wrbin(10) // cursor down then 4 left
for j = 1 to 4 do wrbin(8)
$)
txtcursor(0, 23) // leave cursor at end of screen
$)
.
00000000 73 65 63 74 69 6f 6e 20 22 45 58 4d 50 32 22 0a |section "EXMP2".|
00000010 0d 0a 0d 67 65 74 20 22 65 78 6d 70 68 64 72 22 |...get "exmphdr"|
00000020 0a 0d 0a 0d 2f 2f 20 54 68 69 73 20 73 65 63 74 |....// This sect|
00000030 69 6f 6e 20 6f 66 20 45 58 41 4d 50 4c 45 20 63 |ion of EXAMPLE c|
00000040 6f 6e 74 61 69 6e 73 20 74 68 65 20 70 72 6f 63 |ontains the proc|
00000050 65 64 75 72 65 20 74 6f 20 70 6c 61 79 20 61 20 |edure to play a |
00000060 74 75 6e 65 2e 0a 0d 0a 0d 0a 0d 2f 2f 20 50 4c |tune.......// PL|
00000070 41 59 54 55 4e 45 20 75 73 65 73 20 74 68 65 20 |AYTUNE uses the |
00000080 45 4e 56 45 4c 4f 50 45 20 61 6e 64 20 53 4f 55 |ENVELOPE and SOU|
00000090 4e 44 20 70 72 6f 63 65 64 75 72 65 73 20 74 6f |ND procedures to|
000000a0 20 70 6c 61 79 20 61 20 73 69 6d 70 6c 65 20 74 | play a simple t|
000000b0 75 6e 65 2e 20 54 68 65 0a 0d 2f 2f 20 74 75 6e |une. The..// tun|
000000c0 65 20 69 73 20 73 74 6f 72 65 64 20 69 6e 20 61 |e is stored in a|
000000d0 20 73 74 72 69 6e 67 2e 20 45 61 63 68 20 6e 6f | string. Each no|
000000e0 74 65 20 69 73 20 72 65 70 72 65 73 65 6e 74 65 |te is represente|
000000f0 64 20 62 79 20 33 20 63 68 61 72 61 63 74 65 72 |d by 3 character|
00000100 73 20 2d 20 74 68 65 0a 0d 2f 2f 20 6f 63 74 61 |s - the..// octa|
00000110 76 65 20 6e 75 6d 62 65 72 2c 20 74 68 65 20 6e |ve number, the n|
00000120 6f 74 65 20 28 61 2d 67 29 20 61 6e 64 20 2b 2c |ote (a-g) and +,|
00000130 20 2d 20 6f 72 20 73 70 61 63 65 20 66 6f 72 20 | - or space for |
00000140 73 68 61 72 70 2c 20 66 6c 61 74 20 6f 72 0a 0d |sharp, flat or..|
00000150 2f 2f 20 6e 61 74 75 72 61 6c 2e 20 54 68 65 20 |// natural. The |
00000160 6e 6f 74 65 20 69 73 20 69 6e 20 6c 6f 77 65 72 |note is in lower|
00000170 20 63 61 73 65 20 66 6f 72 20 61 20 71 75 61 76 | case for a quav|
00000180 65 72 20 61 6e 64 20 75 70 70 65 72 20 63 61 73 |er and upper cas|
00000190 65 20 66 6f 72 20 61 0a 0d 2f 2f 20 63 72 6f 74 |e for a..// crot|
000001a0 63 68 65 74 2e 20 54 68 65 20 66 69 72 73 74 20 |chet. The first |
000001b0 6e 6f 74 65 20 69 6e 20 61 20 62 61 72 20 69 73 |note in a bar is|
000001c0 20 70 72 65 63 65 64 65 64 20 62 79 20 27 21 27 | preceded by '!'|
000001d0 2e 20 54 68 65 20 73 74 72 69 6e 67 20 69 73 20 |. The string is |
000001e0 61 73 73 75 6d 65 64 0a 0d 2f 2f 20 74 6f 20 62 |assumed..// to b|
000001f0 65 20 76 61 6c 69 64 2e 0a 0d 0a 0d 6c 65 74 20 |e valid.....let |
00000200 70 6c 61 79 74 75 6e 65 28 29 20 62 65 0a 0d 24 |playtune() be..$|
00000210 28 20 6c 65 74 20 65 6e 76 6e 75 6d 62 65 72 20 |( let envnumber |
00000220 3d 20 31 20 20 20 20 20 20 20 20 20 20 2f 2f 20 |= 1 // |
00000230 65 6e 76 65 6c 6f 70 65 20 74 6f 20 75 73 65 0a |envelope to use.|
00000240 0d 20 20 20 6c 65 74 20 70 69 74 63 68 20 3d 20 |. let pitch = |
00000250 3f 20 20 20 20 20 20 20 20 20 20 20 20 20 20 2f |? /|
00000260 2f 20 70 69 74 63 68 20 70 61 72 61 6d 65 74 65 |/ pitch paramete|
00000270 72 20 66 6f 72 20 53 4f 55 4e 44 0a 0d 20 20 20 |r for SOUND.. |
00000280 6c 65 74 20 73 62 75 66 66 73 7a 20 3d 20 61 64 |let sbuffsz = ad|
00000290 76 61 6c 28 2d 36 29 20 20 20 20 2f 2f 20 73 69 |val(-6) // si|
000002a0 7a 65 20 6f 66 20 73 6f 75 6e 64 20 62 75 66 66 |ze of sound buff|
000002b0 65 72 20 31 20 28 6e 75 6d 62 65 72 20 6f 66 20 |er 1 (number of |
000002c0 66 72 65 65 20 73 6c 6f 74 73 29 0a 0d 20 20 20 |free slots).. |
000002d0 6c 65 74 20 73 6f 75 6e 64 76 65 63 20 3d 20 76 |let soundvec = v|
000002e0 65 63 20 33 20 20 20 20 20 20 20 2f 2f 20 70 61 |ec 3 // pa|
000002f0 72 61 6d 65 74 65 72 20 66 6f 72 20 53 4f 55 4e |rameter for SOUN|
00000300 44 0a 0d 20 20 20 6c 65 74 20 74 75 6e 65 20 3d |D.. let tune =|
00000310 20 22 21 33 62 2d 2a 0a 0d 20 20 20 20 20 20 20 | "!3b-*.. |
00000320 20 20 20 20 20 20 20 2a 21 34 65 2d 34 65 2d 34 | *!4e-4e-4|
00000330 65 2d 34 65 2d 34 65 2d 34 65 2d 2a 0a 0d 20 20 |e-4e-4e-4e-*.. |
00000340 20 20 20 20 20 20 20 20 20 20 20 20 2a 21 34 64 | *!4d|
00000350 20 34 66 20 34 62 2d 34 62 2d 34 61 2d 34 66 20 | 4f 4b-4b-4a-4f |
00000360 2a 0a 0d 20 20 20 20 20 20 20 20 20 20 20 20 20 |*.. |
00000370 20 2a 21 34 65 2d 34 65 2d 34 65 2d 34 65 2d 34 | *!4e-4e-4e-4e-4|
00000380 64 20 34 65 2d 2a 0a 0d 20 20 20 20 20 20 20 20 |d 4e-*.. |
00000390 20 20 20 20 20 20 2a 21 34 66 20 33 62 2d 33 62 | *!4f 3b-3b|
000003a0 2d 33 42 2d 33 62 2d 2a 0a 0d 20 20 20 20 20 20 |-3B-3b-*.. |
000003b0 20 20 20 20 20 20 20 20 2a 21 34 65 2d 34 65 2d | *!4e-4e-|
000003c0 34 65 2d 34 65 2d 34 65 2d 34 65 2d 2a 0a 0d 20 |4e-4e-4e-4e-*.. |
000003d0 20 20 20 20 20 20 20 20 20 20 20 20 20 2a 21 34 | *!4|
000003e0 64 20 34 66 20 34 62 2d 34 62 2d 34 61 2d 34 66 |d 4f 4b-4b-4a-4f|
000003f0 20 2a 0a 0d 20 20 20 20 20 20 20 20 20 20 20 20 | *.. |
00000400 20 20 2a 21 34 67 20 34 62 2d 34 65 2d 34 66 20 | *!4g 4b-4e-4f |
00000410 34 65 2d 34 66 20 2a 0a 0d 20 20 20 20 20 20 20 |4e-4f *.. |
00000420 20 20 20 20 20 20 20 2a 21 34 65 2d 33 65 2d 33 | *!4e-3e-3|
00000430 65 2d 33 45 2d 22 0a 0d 0a 0d 20 20 20 2f 2f 20 |e-3E-".... // |
00000440 4e 4f 54 45 56 41 4c 20 69 73 20 61 20 74 61 62 |NOTEVAL is a tab|
00000450 6c 65 20 6f 66 20 74 68 65 20 70 69 74 63 68 20 |le of the pitch |
00000460 66 6f 72 20 74 68 65 20 6e 6f 74 65 73 20 69 6e |for the notes in|
00000470 20 6f 6e 65 20 6f 63 74 61 76 65 2c 0a 0d 20 20 | one octave,.. |
00000480 20 2f 2f 20 73 74 61 72 74 69 6e 67 20 77 69 74 | // starting wit|
00000490 68 20 41 20 61 6e 64 20 74 61 6b 69 6e 67 20 43 |h A and taking C|
000004a0 20 61 73 20 30 2e 0a 0d 0a 0d 20 20 20 6c 65 74 | as 0..... let|
000004b0 20 6e 6f 74 65 76 61 6c 20 3d 20 74 61 62 6c 65 | noteval = table|
000004c0 20 33 36 2c 20 34 34 2c 20 30 2c 20 38 2c 20 31 | 36, 44, 0, 8, 1|
000004d0 36 2c 20 32 30 2c 20 32 38 0a 0d 0a 0d 20 20 20 |6, 20, 28.... |
000004e0 2f 2f 20 53 65 74 20 75 70 20 73 63 72 65 65 6e |// Set up screen|
000004f0 20 64 69 73 70 6c 61 79 20 74 68 65 6e 20 73 65 | display then se|
00000500 74 20 75 70 20 65 6e 76 65 6c 6f 70 65 73 2e 20 |t up envelopes. |
00000510 45 6e 76 65 6c 6f 70 65 20 31 0a 0d 20 20 20 2f |Envelope 1.. /|
00000520 2f 20 69 73 20 66 6f 72 20 71 75 61 76 65 72 2e |/ is for quaver.|
00000530 20 45 6e 76 65 6c 6f 70 65 20 32 20 69 73 20 66 | Envelope 2 is f|
00000540 6f 72 20 63 72 6f 74 63 68 65 74 2e 20 45 6e 76 |or crotchet. Env|
00000550 65 6c 6f 70 65 20 33 0a 0d 20 20 20 2f 2f 20 69 |elope 3.. // i|
00000560 73 20 66 6f 72 20 61 63 63 65 6e 74 65 64 20 71 |s for accented q|
00000570 75 61 76 65 72 20 61 74 20 73 74 61 72 74 20 6f |uaver at start o|
00000580 66 20 62 61 72 2e 20 28 54 68 65 72 65 20 61 72 |f bar. (There ar|
00000590 65 20 6e 6f 0a 0d 20 20 20 2f 2f 20 61 63 63 65 |e no.. // acce|
000005a0 6e 74 65 64 20 63 72 6f 74 63 68 65 74 73 2e 29 |nted crotchets.)|
000005b0 0a 0d 0a 0d 20 20 20 64 6f 64 69 73 70 6c 61 79 |.... dodisplay|
000005c0 28 29 0a 0d 20 20 20 65 6e 76 65 6c 6f 70 65 28 |().. envelope(|
000005d0 74 61 62 6c 65 20 31 2c 20 32 2c 20 30 2c 20 30 |table 1, 2, 0, 0|
000005e0 2c 20 30 2c 20 30 2c 20 30 2c 20 30 2c 20 33 30 |, 0, 0, 0, 0, 30|
000005f0 2c 20 20 2d 32 2c 20 2d 31 32 37 2c 20 2d 31 32 |, -2, -127, -12|
00000600 37 2c 20 31 32 30 2c 20 31 30 35 29 0a 0d 20 20 |7, 120, 105).. |
00000610 20 65 6e 76 65 6c 6f 70 65 28 74 61 62 6c 65 20 | envelope(table |
00000620 32 2c 20 32 2c 20 30 2c 20 30 2c 20 30 2c 20 30 |2, 2, 0, 0, 0, 0|
00000630 2c 20 30 2c 20 30 2c 20 36 30 2c 20 20 2d 36 2c |, 0, 0, 60, -6,|
00000640 20 20 2d 33 30 2c 20 2d 31 32 37 2c 20 31 32 30 | -30, -127, 120|
00000650 2c 20 20 36 30 29 0a 0d 20 20 20 65 6e 76 65 6c |, 60).. envel|
00000660 6f 70 65 28 74 61 62 6c 65 20 33 2c 20 32 2c 20 |ope(table 3, 2, |
00000670 30 2c 20 30 2c 20 30 2c 20 30 2c 20 30 2c 20 30 |0, 0, 0, 0, 0, 0|
00000680 2c 20 36 34 2c 20 2d 31 30 2c 20 20 2d 36 35 2c |, 64, -10, -65,|
00000690 20 2d 31 32 37 2c 20 31 32 36 2c 20 20 35 39 29 | -127, 126, 59)|
000006a0 0a 0d 0a 0d 20 20 20 73 6f 75 6e 64 76 65 63 21 |.... soundvec!|
000006b0 30 20 3a 3d 20 31 20 20 20 20 20 20 20 20 20 2f |0 := 1 /|
000006c0 2f 20 69 6e 69 74 69 61 6c 69 73 65 20 63 68 61 |/ initialise cha|
000006d0 6e 6e 65 6c 20 6e 75 6d 62 65 72 0a 0d 0a 0d 20 |nnel number.... |
000006e0 20 20 2f 2f 20 50 72 6f 63 65 73 73 20 65 61 63 | // Process eac|
000006f0 68 20 63 68 61 72 61 63 74 65 72 20 69 6e 20 74 |h character in t|
00000700 68 65 20 74 75 6e 65 20 73 74 72 69 6e 67 2e 0a |he tune string..|
00000710 0d 0a 0d 20 20 20 66 6f 72 20 69 20 3d 20 31 20 |... for i = 1 |
00000720 74 6f 20 74 75 6e 65 25 30 20 64 6f 0a 0d 20 20 |to tune%0 do.. |
00000730 20 24 28 20 6c 65 74 20 63 68 20 3d 20 74 75 6e | $( let ch = tun|
00000740 65 25 69 0a 0d 0a 0d 20 20 20 20 20 20 74 65 73 |e%i.... tes|
00000750 74 20 27 31 27 20 3c 3d 20 63 68 20 3c 3d 20 27 |t '1' <= ch <= '|
00000760 37 27 20 74 68 65 6e 0a 0d 0a 0d 20 20 20 20 20 |7' then.... |
00000770 20 2f 2f 20 4f 63 74 61 76 65 20 6e 75 6d 62 65 | // Octave numbe|
00000780 72 20 2d 20 69 6e 69 74 69 61 6c 69 73 65 20 70 |r - initialise p|
00000790 69 74 63 68 2e 0a 0d 20 20 20 20 20 20 20 20 20 |itch... |
000007a0 70 69 74 63 68 20 3a 3d 20 34 38 2a 28 63 68 2d |pitch := 48*(ch-|
000007b0 27 30 27 29 20 2d 20 39 31 0a 0d 0a 0d 20 20 20 |'0') - 91.... |
000007c0 20 20 20 65 6c 73 65 20 74 65 73 74 20 27 61 27 | else test 'a'|
000007d0 20 3c 3d 20 63 68 20 3c 3d 20 27 67 27 20 74 68 | <= ch <= 'g' th|
000007e0 65 6e 0a 0d 0a 0d 20 20 20 20 20 20 2f 2f 20 4e |en.... // N|
000007f0 6f 74 65 20 28 71 75 61 76 65 72 29 20 2d 20 75 |ote (quaver) - u|
00000800 70 64 61 74 65 20 70 69 74 63 68 20 61 6e 64 20 |pdate pitch and |
00000810 6c 65 61 76 65 20 65 6e 76 65 6c 6f 70 65 20 61 |leave envelope a|
00000820 73 20 31 20 28 6f 72 20 33 29 2e 0a 0d 20 20 20 |s 1 (or 3)... |
00000830 20 20 20 20 20 20 70 69 74 63 68 20 3a 3d 20 70 | pitch := p|
00000840 69 74 63 68 20 2b 20 6e 6f 74 65 76 61 6c 21 28 |itch + noteval!(|
00000850 63 68 2d 27 61 27 29 0a 0d 0a 0d 20 20 20 20 20 |ch-'a').... |
00000860 20 65 6c 73 65 20 74 65 73 74 20 27 41 27 20 3c | else test 'A' <|
00000870 3d 20 63 68 20 3c 3d 20 27 47 27 20 74 68 65 6e |= ch <= 'G' then|
00000880 0a 0d 0a 0d 20 20 20 20 20 20 2f 2f 20 4e 6f 74 |.... // Not|
00000890 65 20 28 63 72 6f 74 63 68 65 74 29 20 2d 20 75 |e (crotchet) - u|
000008a0 70 64 61 74 65 20 70 69 74 63 68 20 61 6e 64 20 |pdate pitch and |
000008b0 73 65 6c 65 63 74 20 65 6e 76 65 6c 6f 70 65 20 |select envelope |
000008c0 32 2e 0a 0d 20 20 20 20 20 20 24 28 20 70 69 74 |2... $( pit|
000008d0 63 68 20 3a 3d 20 70 69 74 63 68 20 2b 20 6e 6f |ch := pitch + no|
000008e0 74 65 76 61 6c 21 28 63 68 2d 27 41 27 29 0a 0d |teval!(ch-'A')..|
000008f0 20 20 20 20 20 20 20 20 20 65 6e 76 6e 75 6d 62 | envnumb|
00000900 65 72 20 3a 3d 20 32 0a 0d 20 20 20 20 20 20 24 |er := 2.. $|
00000910 29 0a 0d 0a 0d 20 20 20 20 20 20 65 6c 73 65 20 |).... else |
00000920 74 65 73 74 20 63 68 20 3d 20 27 21 27 20 74 68 |test ch = '!' th|
00000930 65 6e 0a 0d 0a 0d 20 20 20 20 20 20 2f 2f 20 53 |en.... // S|
00000940 74 61 72 74 20 6f 66 20 62 61 72 20 73 6f 20 73 |tart of bar so s|
00000950 65 74 20 65 6e 76 65 6c 6f 70 65 20 33 20 66 6f |et envelope 3 fo|
00000960 72 20 66 6f 6c 6c 6f 77 69 6e 67 20 6e 6f 74 65 |r following note|
00000970 2e 0a 0d 20 20 20 20 20 20 20 20 20 65 6e 76 6e |... envn|
00000980 75 6d 62 65 72 20 3a 3d 20 33 0a 0d 0a 0d 20 20 |umber := 3.... |
00000990 20 20 20 20 65 6c 73 65 0a 0d 0a 0d 20 20 20 20 | else.... |
000009a0 20 20 2f 2f 20 41 73 73 75 6d 65 20 27 2b 27 2c | // Assume '+',|
000009b0 20 27 2d 27 20 6f 72 20 73 70 61 63 65 20 73 6f | '-' or space so|
000009c0 20 61 64 6a 75 73 74 20 70 69 74 63 68 20 66 6f | adjust pitch fo|
000009d0 72 20 73 68 61 72 70 20 6f 72 0a 0d 20 20 20 20 |r sharp or.. |
000009e0 20 20 2f 2f 20 66 6c 61 74 20 69 66 20 61 70 70 | // flat if app|
000009f0 72 6f 70 72 69 61 74 65 20 74 68 65 6e 20 70 6c |ropriate then pl|
00000a00 61 79 20 74 68 65 20 6e 6f 74 65 2e 0a 0d 20 20 |ay the note... |
00000a10 20 20 20 20 24 28 20 74 65 73 74 20 63 68 20 3d | $( test ch =|
00000a20 20 27 2b 27 20 74 68 65 6e 0a 0d 20 20 20 20 20 | '+' then.. |
00000a30 20 20 20 20 20 20 20 70 69 74 63 68 20 3a 3d 20 | pitch := |
00000a40 70 69 74 63 68 20 2b 20 34 0a 0d 20 20 20 20 20 |pitch + 4.. |
00000a50 20 20 20 20 65 6c 73 65 20 69 66 20 63 68 20 3d | else if ch =|
00000a60 20 27 2d 27 20 74 68 65 6e 0a 0d 20 20 20 20 20 | '-' then.. |
00000a70 20 20 20 20 20 20 20 70 69 74 63 68 20 3a 3d 20 | pitch := |
00000a80 70 69 74 63 68 20 2d 20 34 0a 0d 0a 0d 20 20 20 |pitch - 4.... |
00000a90 20 20 20 20 20 20 73 6f 75 6e 64 76 65 63 21 31 | soundvec!1|
00000aa0 20 3a 3d 20 65 6e 76 6e 75 6d 62 65 72 0a 0d 20 | := envnumber.. |
00000ab0 20 20 20 20 20 20 20 20 73 6f 75 6e 64 76 65 63 | soundvec|
00000ac0 21 32 20 3a 3d 20 70 69 74 63 68 0a 0d 20 20 20 |!2 := pitch.. |
00000ad0 20 20 20 20 20 20 73 6f 75 6e 64 76 65 63 21 33 | soundvec!3|
00000ae0 20 3a 3d 20 65 6e 76 6e 75 6d 62 65 72 20 3d 20 | := envnumber = |
00000af0 32 20 2d 3e 20 36 2c 20 33 20 2f 2f 20 64 75 72 |2 -> 6, 3 // dur|
00000b00 61 74 69 6f 6e 20 28 6c 6f 6e 67 65 72 20 66 6f |ation (longer fo|
00000b10 72 20 63 72 6f 74 63 68 65 74 29 0a 0d 20 20 20 |r crotchet).. |
00000b20 20 20 20 20 20 20 73 6f 75 6e 64 28 73 6f 75 6e | sound(soun|
00000b30 64 76 65 63 29 0a 0d 0a 0d 20 20 20 20 20 20 20 |dvec).... |
00000b40 20 20 65 6e 76 6e 75 6d 62 65 72 20 3a 3d 20 31 | envnumber := 1|
00000b50 20 20 20 20 2f 2f 20 72 65 73 65 74 20 65 6e 76 | // reset env|
00000b60 65 6c 6f 70 65 20 6e 75 6d 62 65 72 20 74 6f 20 |elope number to |
00000b70 71 75 61 76 65 72 2e 0a 0d 20 20 20 20 20 20 24 |quaver... $|
00000b80 29 0a 0d 20 20 20 24 29 20 20 20 20 20 20 20 20 |).. $) |
00000b90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 2f 2f | //|
00000ba0 20 62 61 63 6b 20 66 6f 72 20 6e 65 78 74 20 63 | back for next c|
00000bb0 68 61 72 61 63 74 65 72 0a 0d 0a 0d 20 20 20 2f |haracter.... /|
00000bc0 2f 20 41 6c 6c 20 6e 6f 74 65 73 20 70 75 74 20 |/ All notes put |
00000bd0 69 6e 20 62 75 66 66 65 72 2e 20 57 61 69 74 20 |in buffer. Wait |
00000be0 75 6e 74 69 6c 20 74 68 65 79 20 68 61 76 65 20 |until they have |
00000bf0 62 65 65 6e 20 70 6c 61 79 65 64 0a 0d 20 20 20 |been played.. |
00000c00 2f 2f 20 62 65 66 6f 72 65 20 72 65 74 75 72 6e |// before return|
00000c10 69 6e 67 20 74 6f 20 74 68 65 20 6d 65 6e 75 2e |ing to the menu.|
00000c20 0a 0d 0a 0d 20 20 20 75 6e 74 69 6c 20 61 64 76 |.... until adv|
00000c30 61 6c 28 2d 36 29 20 3d 20 73 62 75 66 66 73 7a |al(-6) = sbuffsz|
00000c40 20 6c 6f 6f 70 20 20 20 20 20 20 2f 2f 20 77 61 | loop // wa|
00000c50 69 74 20 66 6f 72 20 74 75 6e 65 20 74 6f 20 65 |it for tune to e|
00000c60 6e 64 0a 0d 24 29 0a 0d 0a 0d 0a 0d 2f 2f 20 44 |nd..$)......// D|
00000c70 49 53 50 4e 4f 54 45 20 64 69 73 70 6c 61 79 73 |ISPNOTE displays|
00000c80 20 61 20 6e 6f 74 65 20 73 79 6d 62 6f 6c 20 69 | a note symbol i|
00000c90 6e 20 66 6c 61 73 68 69 6e 67 20 77 68 69 74 65 |n flashing white|
00000ca0 20 61 74 20 61 20 73 70 65 63 69 66 69 65 64 20 | at a specified |
00000cb0 78 20 70 6f 73 69 74 69 6f 6e 2e 0a 0d 0a 0d 61 |x position.....a|
00000cc0 6e 64 20 64 69 73 70 6e 6f 74 65 28 78 29 20 62 |nd dispnote(x) b|
00000cd0 65 0a 0d 24 28 20 6c 65 74 20 63 68 61 72 74 61 |e..$( let charta|
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00000cf0 30 2c 32 33 34 2c 32 32 38 2c 20 20 20 2f 2f 20 |0,234,228, // |
00000d00 34 78 35 20 61 72 72 61 79 20 6f 66 20 67 72 61 |4x5 array of gra|
00000d10 70 68 69 63 73 20 63 68 61 72 73 0a 0d 20 20 20 |phics chars.. |
00000d20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
00000d30 20 20 20 20 31 34 31 2c 31 36 30 2c 32 33 34 2c | 141,160,234,|
00000d40 31 36 30 2c 20 20 20 2f 2f 20 64 6f 75 62 6c 65 |160, // double|
00000d50 20 68 65 69 67 68 74 0a 0d 20 20 20 20 20 20 20 | height.. |
00000d60 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
00000d70 31 34 31 2c 31 36 30 2c 32 33 34 2c 31 36 30 2c |141,160,234,160,|
00000d80 0a 0d 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |.. |
00000d90 20 20 20 20 20 20 20 20 20 31 36 30 2c 32 34 38 | 160,248|
00000da0 2c 32 35 34 2c 31 36 30 2c 0a 0d 20 20 20 20 20 |,254,160,.. |
00000db0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
00000dc0 20 20 31 36 30 2c 31 38 31 2c 32 33 34 2c 31 36 | 160,181,234,16|
00000dd0 30 2c 0a 0d 20 20 20 20 20 20 20 20 20 20 20 20 |0,.. |
00000de0 20 20 20 20 20 20 20 20 20 20 20 31 36 30 2c 31 | 160,1|
00000df0 37 31 2c 31 36 37 2c 31 36 30 0a 0d 20 20 20 66 |71,167,160.. f|
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00000e30 73 69 74 69 6f 6e 20 63 68 61 72 61 63 74 65 72 |sition character|
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00000e50 20 20 77 72 62 69 6e 28 31 33 36 29 20 20 20 20 | wrbin(136) |
00000e60 20 20 20 20 20 20 20 2f 2f 20 66 6c 61 73 68 69 | // flashi|
00000e70 6e 67 0a 0d 20 20 20 20 20 20 77 72 62 69 6e 28 |ng.. wrbin(|
00000e80 31 35 31 29 20 20 20 20 20 20 20 20 20 20 20 2f |151) /|
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00000ea0 0d 20 20 20 20 20 20 66 6f 72 20 6a 3d 34 2a 69 |. for j=4*i|
00000eb0 20 74 6f 20 34 2a 69 2b 33 20 64 6f 0a 0d 20 20 | to 4*i+3 do.. |
00000ec0 20 20 20 20 20 20 20 77 72 62 69 6e 28 63 68 61 | wrbin(cha|
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00000ee0 72 62 69 6e 28 31 33 37 29 20 20 20 20 20 20 20 |rbin(137) |
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00000f00 20 20 24 29 0a 0d 24 29 0a 0d 0a 0d 0a 0d 2f 2f | $)..$)......//|
00000f10 20 44 4f 44 49 53 50 4c 41 59 20 73 65 74 73 20 | DODISPLAY sets |
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00000f30 0d 0a 0d 61 6e 64 20 64 6f 64 69 73 70 6c 61 79 |...and dodisplay|
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00000f50 29 0a 0d 20 20 20 66 6f 72 20 69 20 3d 20 30 20 |).. for i = 0 |
00000f60 74 6f 20 31 20 64 6f 20 20 20 20 20 20 20 2f 2f |to 1 do //|
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00000fa0 20 20 20 20 20 20 77 72 69 74 65 73 28 22 2a 78 | writes("*x|
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00000fc0 55 20 53 20 49 20 43 20 20 2a 78 39 43 22 29 0a |U S I C *x9C").|
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00000ff0 28 32 39 29 20 20 20 20 20 20 20 20 2f 2f 20 6e |(29) // n|
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00001060 73 65 6c 65 63 74 20 6f 6e 65 20 6f 66 20 74 68 |select one of th|
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000010d0 66 74 0a 0d 20 20 20 20 20 20 66 6f 72 20 6a 20 |ft.. for j |
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00001140 0d 0a 0d |...|
00001143 
EXMP2B.m0
EXMP2B.m1
EXMP2B.m2
EXMP2B.m4
EXMP2B.m5
.