diff options
| -rw-r--r-- | jumpmanjr.dasm | 22 | ||||
| -rw-r--r-- | jumpmanjr.inc | 2 | ||||
| -rw-r--r-- | jumpmanjr.info | 4 | ||||
| -rw-r--r-- | main.info | 4 | ||||
| -rw-r--r-- | sound.txt | 56 |
5 files changed, 72 insertions, 16 deletions
diff --git a/jumpmanjr.dasm b/jumpmanjr.dasm index 77b2963..dde3f36 100644 --- a/jumpmanjr.dasm +++ b/jumpmanjr.dasm @@ -1,5 +1,5 @@ ; da65 V2.15 - Git 104f898 -; Created: 2016-09-05 19:01:23 +; Created: 2016-09-06 14:33:25 ; Input file: jumpmanjr.rom ; Page: 1 @@ -71,7 +71,7 @@ sfx_ptr := $063C sfx_slot_tempo := $063E ; tempo of this sfx sfx_slot_timer := $063F sfx_slot_duration:= $0646 -sfx_slot_freq := $0647 +sfx_slot_audc := $0647 sfx_slot_curpos := $064E ; address we've got to so far, playing this sfx sfx_tempo_tmp := $0661 ; ?? num_tmp := $0665 ; temp used by print_number @@ -218,7 +218,7 @@ GRACTL := $D01D HITCLR := $D01E CONSOL := $D01F AUDF1_minus_two := $D1FE -AUDF1_minus_one := $D1FF +AUDC1_minus_two := $D1FF AUDF1 := $D200 AUDC1 := $D201 AUDF2 := $D202 @@ -576,7 +576,7 @@ is_slot_active: cmp sfx_slot_duration,x ; 8170 DD 46 06 .F. bne next_sfx_slot ; 8173 D0 EA .. lda #$00 ; 8175 A9 00 .. - sta AUDF1_minus_one,x ; 8177 9D FF D1 ... + sta AUDC1_minus_two,x ; 8177 9D FF D1 ... jmp next_sfx_slot ; 817A 4C 5F 81 L_. ; ---------------------------------------------------------------------------- @@ -590,7 +590,7 @@ sfx_next_note: cmp #$04 ; 818B C9 04 .. bcs sfx_play_note ; 818D B0 77 .w cmp #$01 ; 818F C9 01 .. - beq sfx_change_tempo ; 8191 F0 1B .. + beq sfx_set_audc ; 8191 F0 1B .. cmp #$02 ; 8193 C9 02 .. beq sfx_jump_opcode ; 8195 F0 31 .1 cmp #$03 ; 8197 C9 03 .. @@ -601,7 +601,7 @@ sfx_next_note: ; y==0 on entry sfx_play_rest: tya ; 819E 98 . - sta AUDF1_minus_one,x ; 819F 9D FF D1 ... + sta AUDC1_minus_two,x ; 819F 9D FF D1 ... iny ; 81A2 C8 . lda (zp_temp1),y ; 81A3 B1 CB .. sta sfx_slot_timer,x ; 81A5 9D 3F 06 .?. @@ -610,10 +610,10 @@ sfx_play_rest: ; ---------------------------------------------------------------------------- ; y==0 on entry -sfx_change_tempo: +sfx_set_audc: iny ; 81AE C8 . lda (zp_temp1),y ; 81AF B1 CB .. - sta sfx_slot_freq,x ; 81B1 9D 47 06 .G. + sta sfx_slot_audc,x ; 81B1 9D 47 06 .G. iny ; 81B4 C8 . lda (zp_temp1),y ; 81B5 B1 CB .. sta sfx_slot_duration,x ; 81B7 9D 46 06 .F. @@ -663,8 +663,8 @@ sfx_play_note: iny ; 8209 C8 . lda (zp_temp1),y ; 820A B1 CB .. sta sfx_slot_timer,x ; 820C 9D 3F 06 .?. - lda sfx_slot_freq,x ; 820F BD 47 06 .G. - sta AUDF1_minus_one,x ; 8212 9D FF D1 ... + lda sfx_slot_audc,x ; 820F BD 47 06 .G. + sta AUDC1_minus_two,x ; 8212 9D FF D1 ... clc ; 8215 18 . lda sfx_slot_curpos,x ; 8216 BD 4E 06 .N. adc #$02 ; 8219 69 02 i. @@ -679,7 +679,7 @@ cpos_hi_ok: sfx_finished: lda #$00 ; 8226 A9 00 .. sta sfx_slot_tempo,x ; 8228 9D 3E 06 .>. - sta AUDF1_minus_one,x ; 822B 9D FF D1 ... + sta AUDC1_minus_two,x ; 822B 9D FF D1 ... jmp next_sfx_slot ; 822E 4C 5F 81 L_. ; ---------------------------------------------------------------------------- diff --git a/jumpmanjr.inc b/jumpmanjr.inc index 7341855..ba992fe 100644 --- a/jumpmanjr.inc +++ b/jumpmanjr.inc @@ -20,7 +20,7 @@ COLPF2 = $D018 HSCROL = $D404 COLBK = $D01A AUDF1_minus_two = $D1FE -AUDF1_minus_one = $D1FF +AUDC1_minus_two = $D1FF AUDF1 = $D200 AUDC1 = $D201 AUDF2 = $D202 diff --git a/jumpmanjr.info b/jumpmanjr.info index ae933ef..d3f2e51 100644 --- a/jumpmanjr.info +++ b/jumpmanjr.info @@ -306,9 +306,9 @@ label { name "sfx_slot_timer"; addr $063F; size 1; }; label { name "sfx_slot_duration"; addr $0646; size 1; }; label { name "sfx_play_note"; addr $8206; size 1; comment "y==0, a>=4 on entry"; }; label { name "sfx_play_rest"; addr $819E; size 1; comment "y==0 on entry"; }; -label { name "sfx_change_tempo"; addr $81AE; size 1; comment "y==0 on entry"; }; +label { name "sfx_set_audc"; addr $81AE; size 1; comment "y==0 on entry"; }; label { name "sfx_jump_opcode"; addr $81C8; size 1; comment "I *think* this jumps to a different sfx address..."; }; -label { name "sfx_slot_freq"; addr $0647; size 1; }; +label { name "sfx_slot_audc"; addr $0647; size 1; }; range { name "sfx00"; start $BDF2; end $BE24; type bytetable; }; range { name "sfx01"; start $BE25; end $BE78; type bytetable; }; @@ -304,9 +304,9 @@ label { name "sfx_slot_timer"; addr $063F; size 1; }; label { name "sfx_slot_duration"; addr $0646; size 1; }; label { name "sfx_play_note"; addr $8206; size 1; comment "y==0, a>=4 on entry"; }; label { name "sfx_play_rest"; addr $819E; size 1; comment "y==0 on entry"; }; -label { name "sfx_change_tempo"; addr $81AE; size 1; comment "y==0 on entry"; }; +label { name "sfx_set_audc"; addr $81AE; size 1; comment "y==0 on entry"; }; label { name "sfx_jump_opcode"; addr $81C8; size 1; comment "I *think* this jumps to a different sfx address..."; }; -label { name "sfx_slot_freq"; addr $0647; size 1; }; +label { name "sfx_slot_audc"; addr $0647; size 1; }; range { name "sfx00"; start $BDF2; end $BE24; type bytetable; }; range { name "sfx01"; start $BE25; end $BE78; type bytetable; }; diff --git a/sound.txt b/sound.txt new file mode 100644 index 0000000..c9754e9 --- /dev/null +++ b/sound.txt @@ -0,0 +1,56 @@ +Most of the sounds in the game are played by a sound engine that +runs 'in the background' (called every vblank). There are some +exceptions: + +- The descending tones played as the letters materialize, on the + title screen (but, the music after that uses the engine). +- The descending tone you hear as Jumpman materializes, at the + start of a level. +- The sound you hear as the screen crumbles, after you lose your + last life. + +Everything else uses the engine, and is stored as a series of +engine opcodes. I've labelled these sfx_* in the source. + +The engine has 2 entry points: cue_sfx and cue_sfx_lowprior. The +difference is that the _lowprior entry point will abort, if another call +to cue_sfx is in progress. Also the arguments are passed differently. +Also there are _jv (jump vector) versions of both entry points, which +are the ones most of the rest of the code uses. + +Example sound effect: + +sfx_jump: + .byte $01,$A5,$00,$79,$04,$60,$04,$51 ; BFBE 01 A5 00 79 04 60 04 51 ...y.`.Q + .byte $04,$3C,$04,$51,$04,$60,$04,$79 ; BFC6 04 3C 04 51 04 60 04 79 .<.Q.`.y + .byte $04,$00 ; BFCE 04 00 .. + +Sound opcodes: + +00 snd_end end of sound +01 xx yy snd_audc set distortion and volume (AUDCx value) to xx, + play previous freq for yy frames. + yy looks to always be zero in actual use, + except the title screen music where it's $02. +02 xx yy snd_jump jump to address yyxx. this is an unconditional + jump, meaning the sfx plays continuously until + preempted or silenced. +03 xx snd_rest play a rest, xx frames (sets AUDCx to 0) +[04-FF] xx snd_note play [opcode] frequency for xx frames + +so sfx_jump might look like this: + +sfx_jump: + snd_audc $A5,$00 + snd_note $79,$04 + snd_note $60,$04 + snd_note $51,$04 + snd_note $3C,$04 + snd_note $51,$04 + snd_note $60,$04 + snd_note $79,$04 + snd_end + +or in english: distortion $A (pure tone), volume 5. for 4 frames each, +play 3 ascending notes, a higher note, then the same 3 notes in reverse +order. the whole thing takes 28 frames to complete, or about 1/2 sec. |