mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-11-18 21:06:31 +00:00
pt3: start adding note decoding
This commit is contained in:
Vince Weaver
parent
fdd59453e4
commit
dd392a2cc6
@ -6,52 +6,85 @@
|
||||
|
||||
NOTE_WHICH=0
|
||||
NOTE_VOLUME=1
|
||||
NOTE_TONE_SLIDING=2
|
||||
NOTE_ENABLED=3
|
||||
NOTE_ENVELOPE_ENABLED=4
|
||||
NOTE_SAMPLE_POINTER=5
|
||||
NOTE_SAMPLE_LOOP=7
|
||||
NOTE_SAMPLE_LENGTH=8
|
||||
NOTE_TONE_L=9
|
||||
NOTE_TONE_H=10
|
||||
NOTE_AMPLITUDE=11
|
||||
NOTE_TONE_SLIDING_L=2
|
||||
NOTE_TONE_SLIDING_H=3
|
||||
NOTE_ENABLED=4
|
||||
NOTE_ENVELOPE_ENABLED=5
|
||||
NOTE_SAMPLE_POINTER_L=6
|
||||
NOTE_SAMPLE_POINTER_H=7
|
||||
NOTE_SAMPLE_LOOP=8
|
||||
NOTE_SAMPLE_LENGTH=9
|
||||
NOTE_TONE_L=10
|
||||
NOTE_TONE_H=11
|
||||
NOTE_AMPLITUDE=12
|
||||
NOTE_NOTE=13
|
||||
NOTE_LEN=14
|
||||
NOTE_LEN_COUNT=15
|
||||
NOTE_SPEC_COMMAND=16 ; is this one needed?
|
||||
NOTE_NEW_NOTE=17
|
||||
|
||||
|
||||
note_a:
|
||||
.byte 'A' ; NOTE_WHICH
|
||||
.byte $0 ; NOTE_VOLUME
|
||||
.byte $0 ; NOTE_TONE_SLIDING
|
||||
.byte $0 ; NOTE_TONE_SLIDING_L
|
||||
.byte $0 ; NOTE_TONE_SLIDING_H
|
||||
.byte $0 ; NOTE_ENABLED
|
||||
.byte $0 ; NOTE_ENVELOPE_ENABLED
|
||||
.word $0 ; NOTE_SAMPLE_POINTER
|
||||
.byte $0 ; NOTE_SAMPLE_POINTER_L
|
||||
.byte $0 ; NOTE_SAMPLE_POINTER_H
|
||||
.byte $0 ; NOTE_SAMPLE_LOOP
|
||||
.byte $0 ; NOTE_SAMPLE_LENGTH
|
||||
.byte $0 ; NOTE_TONE_L
|
||||
.byte $0 ; NOTE_TONE_H
|
||||
.byte $0 ; NOTE_AMPLITUDE
|
||||
.byte $0 ; NOTE_NOTE
|
||||
.byte $0 ; NOTE_LEN
|
||||
.byte $0 ; NOTE_LEN_COUNT
|
||||
.byte $0 ; NOTE_SPEC_COMMAND
|
||||
.byte $0 ; NOTE_NEW_NOTE
|
||||
|
||||
|
||||
note_b:
|
||||
.byte 'B' ; NOTE_WHICH
|
||||
.byte $0 ; NOTE_VOLUME
|
||||
.byte $0 ; NOTE_TONE_SLIDING
|
||||
.byte $0 ; NOTE_TONE_SLIDING_L
|
||||
.byte $0 ; NOTE_TONE_SLIDING_H
|
||||
.byte $0 ; NOTE_ENABLED
|
||||
.byte $0 ; NOTE_ENVELOPE_ENABLED
|
||||
.word $0 ; NOTE_SAMPLE_POINTER
|
||||
.byte $0 ; NOTE_SAMPLE_POINTER_L
|
||||
.byte $0 ; NOTE_SAMPLE_POINTER_H
|
||||
.byte $0 ; NOTE_SAMPLE_LOOP
|
||||
.byte $0 ; NOTE_SAMPLE_LENGTH
|
||||
.byte $0 ; NOTE_TONE_L
|
||||
.byte $0 ; NOTE_TONE_H
|
||||
.byte $0 ; NOTE_AMPLITUDE
|
||||
.byte $0 ; NOTE_NOTE
|
||||
.byte $0 ; NOTE_LEN
|
||||
.byte $0 ; NOTE_LEN_COUNT
|
||||
.byte $0 ; NOTE_SPEC_COMMAND
|
||||
.byte $0 ; NOTE_NEW_NOTE
|
||||
|
||||
note_c:
|
||||
.byte 'C' ; NOTE_WHICH
|
||||
.byte $0 ; NOTE_VOLUME
|
||||
.byte $0 ; NOTE_TONE_SLIDING
|
||||
.byte $0 ; NOTE_TONE_SLIDING_L
|
||||
.byte $0 ; NOTE_TONE_SLIDING_H
|
||||
.byte $0 ; NOTE_ENABLED
|
||||
.byte $0 ; NOTE_ENVELOPE_ENABLED
|
||||
.word $0 ; NOTE_SAMPLE_POINTER
|
||||
.byte $0 ; NOTE_SAMPLE_POINTER_L
|
||||
.byte $0 ; NOTE_SAMPLE_POINTER_H
|
||||
.byte $0 ; NOTE_SAMPLE_LOOP
|
||||
.byte $0 ; NOTE_SAMPLE_LENGTH
|
||||
.byte $0 ; NOTE_TONE_L
|
||||
.byte $0 ; NOTE_TONE_H
|
||||
.byte $0 ; NOTE_AMPLITUDE
|
||||
.byte $0 ; NOTE_NOTE
|
||||
.byte $0 ; NOTE_LEN
|
||||
.byte $0 ; NOTE_LEN_COUNT
|
||||
.byte $0 ; NOTE_SPEC_COMMAND
|
||||
.byte $0 ; NOTE_NEW_NOTE
|
||||
|
||||
|
||||
pt3_version: .byte $0
|
||||
pt3_frequency_table: .byte $0
|
||||
@ -98,9 +131,12 @@ pt3_init_song:
|
||||
sta note_b+NOTE_VOLUME
|
||||
sta note_c+NOTE_VOLUME
|
||||
lda #$0
|
||||
sta note_a+NOTE_TONE_SLIDING
|
||||
sta note_b+NOTE_TONE_SLIDING
|
||||
sta note_c+NOTE_TONE_SLIDING
|
||||
sta note_a+NOTE_TONE_SLIDING_L
|
||||
sta note_b+NOTE_TONE_SLIDING_L
|
||||
sta note_c+NOTE_TONE_SLIDING_L
|
||||
sta note_a+NOTE_TONE_SLIDING_H
|
||||
sta note_b+NOTE_TONE_SLIDING_H
|
||||
sta note_c+NOTE_TONE_SLIDING_H
|
||||
sta note_a+NOTE_ENABLED
|
||||
sta note_b+NOTE_ENABLED
|
||||
sta note_c+NOTE_ENABLED
|
||||
@ -275,12 +311,312 @@ done_note:
|
||||
|
||||
rts
|
||||
|
||||
prev_note: .byte $0
|
||||
prev_sliding_l: .byte $0
|
||||
prev_sliding_h: .byte $0
|
||||
|
||||
;=====================================
|
||||
; Decode Note
|
||||
;=====================================
|
||||
|
||||
decode_note:
|
||||
|
||||
; int a_done=0;
|
||||
; int current_val;
|
||||
|
||||
; Init vars
|
||||
|
||||
lda #0
|
||||
sta note_a+NOTE_NEW_NOTE ; for printing notes?
|
||||
sta note_a+NOTE_SPEC_COMMAND ; These are only if printing?
|
||||
|
||||
; Skip decode if note still running
|
||||
lda note_a+NOTE_LEN_COUNT
|
||||
beq keep_decoding ; assume not negative
|
||||
|
||||
; we are still running, decrement and early return
|
||||
dec note_a+NOTE_LEN_COUNT
|
||||
rts
|
||||
|
||||
keep_decoding:
|
||||
|
||||
lda note_a+NOTE_NOTE ; store prev note
|
||||
sta prev_note
|
||||
|
||||
lda note_a+NOTE_TONE_SLIDING_H ; store prev sliding
|
||||
sta prev_sliding_h
|
||||
lda note_a+NOTE_TONE_SLIDING_L
|
||||
sta prev_sliding_l
|
||||
|
||||
|
||||
note_decode_loop:
|
||||
; a->len_count=a->len;
|
||||
|
||||
; current_val=pt3->data[*addr];
|
||||
; switch((current_val>>4)&0xf) {
|
||||
; case 0:
|
||||
; if (current_val==0x0) {
|
||||
; a->len_count=0;
|
||||
; a->all_done=1;
|
||||
; a_done=1;
|
||||
; }
|
||||
; else { /* FIXME: what if multiple spec commands? */
|
||||
; /* Doesn't seem to happen in practice */
|
||||
; /* But AY_emul has code to handle it */
|
||||
; a->spec_command=current_val&0xf;
|
||||
; }
|
||||
; break;
|
||||
; case 1:
|
||||
; if ((current_val&0xf)==0x0) {
|
||||
; a->envelope_enabled=0;
|
||||
; }
|
||||
; else {
|
||||
; pt3->envelope_type_old=0x78;
|
||||
; pt3->envelope_type=(current_val&0xf);
|
||||
|
||||
; (*addr)++;
|
||||
; current_val=pt3->data[*addr];
|
||||
; pt3->envelope_period=(current_val<<8);
|
||||
|
||||
; (*addr)++;
|
||||
|
||||
; current_val=pt3->data[(*addr)];
|
||||
; pt3->envelope_period|=(current_val&0xff$
|
||||
|
||||
; a->envelope_enabled=1;
|
||||
; pt3->envelope_slide=0;
|
||||
; pt3->envelope_delay=0;
|
||||
; }
|
||||
; (*addr)++;
|
||||
; current_val=pt3->data[(*addr)];
|
||||
; a->sample=(current_val/2);
|
||||
; pt3_load_sample(pt3,a->which);
|
||||
|
||||
; a->ornament_position=0;
|
||||
|
||||
; break;
|
||||
; case 2:
|
||||
; pt3->noise_period=(current_val&0xf);
|
||||
; break;
|
||||
; case 3:
|
||||
; pt3->noise_period=(current_val&0xf)+0x10;
|
||||
; break;
|
||||
; case 4:
|
||||
; a->ornament=(current_val&0xf);
|
||||
; pt3_load_ornament(pt3,a->which);
|
||||
; a->ornament_position=0;
|
||||
; break;
|
||||
; case 5:
|
||||
; case 6:
|
||||
; case 7:
|
||||
; case 8:
|
||||
; case 9:
|
||||
; case 0xa:
|
||||
; a->new_note=1;
|
||||
; a->note=(current_val-0x50);
|
||||
; a->sample_position=0;
|
||||
; a->amplitude_sliding=0;
|
||||
; a->noise_sliding=0;
|
||||
; a->envelope_sliding=0;
|
||||
; a->ornament_position=0;
|
||||
; a->tone_slide_count=0;
|
||||
; a->tone_sliding=0;
|
||||
; a->tone_accumulator=0;
|
||||
; a->onoff=0;
|
||||
; a->enabled=1;
|
||||
; a_done=1;
|
||||
; break;
|
||||
; case 0xb:
|
||||
; /* Disable envelope */
|
||||
; if (current_val==0xb0) {
|
||||
; a->envelope_enabled=0;
|
||||
; a->ornament_position=0;
|
||||
; }
|
||||
; /* set len */
|
||||
; else if (current_val==0xb1) {
|
||||
; (*addr)++;
|
||||
; current_val=pt3->data[(*addr)];
|
||||
; a->len=current_val;
|
||||
; a->len_count=a->len;
|
||||
; }
|
||||
; else {
|
||||
; a->envelope_enabled=1;
|
||||
; pt3->envelope_type_old=0x78;
|
||||
; pt3->envelope_type=(current_val&0xf)-1;
|
||||
; (*addr)++;
|
||||
; current_val=pt3->data[(*addr)];
|
||||
; pt3->envelope_period=(current_val<<8);
|
||||
; (*addr)++;
|
||||
; current_val=pt3->data[(*addr)];
|
||||
; pt3->envelope_period|=(current_val&0xff$
|
||||
; a->ornament_position=0;
|
||||
; pt3->envelope_slide=0;
|
||||
; pt3->envelope_delay=0;
|
||||
; }
|
||||
; break;
|
||||
; case 0xc: /* volume */
|
||||
; if ((current_val&0xf)==0) {
|
||||
; a->sample_position=0;
|
||||
; a->amplitude_sliding=0;
|
||||
; a->noise_sliding=0;
|
||||
; a->envelope_sliding=0;
|
||||
; a->ornament_position=0;
|
||||
; a->tone_slide_count=0;
|
||||
; a->tone_sliding=0;
|
||||
; a->tone_accumulator=0;
|
||||
; a->onoff=0;
|
||||
; a->enabled=0;
|
||||
; a_done=1;
|
||||
; }
|
||||
; else {
|
||||
; a->volume=current_val&0xf;
|
||||
; }
|
||||
; break;
|
||||
; case 0xd:
|
||||
; if (current_val==0xd0) {
|
||||
; a_done=1;
|
||||
; }
|
||||
; else {
|
||||
; a->sample=(current_val&0xf);
|
||||
; pt3_load_sample(pt3,a->which);
|
||||
; }
|
||||
; break;
|
||||
; case 0xe:
|
||||
; a->sample=(current_val-0xd0);
|
||||
; pt3_load_sample(pt3,a->which);
|
||||
; break;
|
||||
; case 0xf:
|
||||
; a->envelope_enabled=0;
|
||||
; a->ornament=(current_val&0xf);
|
||||
; pt3_load_ornament(pt3,a->which);
|
||||
; (*addr)++;
|
||||
; current_val=pt3->data[*addr];
|
||||
|
||||
; a->sample=current_val/2;
|
||||
; a->sample_pointer=pt3->sample_patterns[a->sampl$
|
||||
; pt3_load_sample(pt3,a->which);
|
||||
; break;
|
||||
; }
|
||||
|
||||
; (*addr)++;
|
||||
; /* Note, the AYemul code has code to make sure these are applied */
|
||||
; /* In the same order they appear. We don't bother? */
|
||||
; if (a_done) {
|
||||
; if (a->spec_command==0x0) {
|
||||
; }
|
||||
; /* Tone Down */
|
||||
; else if (a->spec_command==0x1) {
|
||||
; current_val=pt3->data[(*addr)];
|
||||
; a->spec_delay=current_val;
|
||||
; a->tone_slide_delay=current_val;
|
||||
; a->tone_slide_count=a->tone_slide_delay;
|
||||
; (*addr)++;
|
||||
; current_val=pt3->data[(*addr)];
|
||||
; a->spec_lo=(current_val);
|
||||
; (*addr)++;
|
||||
; current_val=pt3->data[(*addr)];
|
||||
; a->spec_hi=(current_val);
|
||||
; a->tone_slide_step=(a->spec_lo)|(a->spec_hi<<8);
|
||||
; /* Sign Extend */
|
||||
; a->tone_slide_step=(a->tone_slide_step<<16)>>16;
|
||||
; a->simplegliss=1;
|
||||
; a->onoff=0;
|
||||
; (*addr)++;
|
||||
; }
|
||||
; /* port */
|
||||
; else if (a->spec_command==0x2) {
|
||||
; a->simplegliss=0;
|
||||
; a->onoff=0;
|
||||
|
||||
; current_val=pt3->data[(*addr)];
|
||||
; a->spec_delay=current_val;
|
||||
|
||||
; a->tone_slide_delay=current_val;
|
||||
; a->tone_slide_count=a->tone_slide_delay;
|
||||
|
||||
; (*addr)++;
|
||||
; (*addr)++;
|
||||
; (*addr)++;
|
||||
; current_val=pt3->data[(*addr)];
|
||||
; a->spec_lo=current_val;
|
||||
|
||||
; (*addr)++;
|
||||
; current_val=pt3->data[(*addr)];
|
||||
; a->spec_hi=current_val;
|
||||
; (*addr)++;
|
||||
|
||||
; a->tone_slide_step=(a->spec_hi<<8)|(a->spec_lo);
|
||||
; /* sign extend */
|
||||
; a->tone_slide_step=(a->tone_slide_step<<16)>>16;
|
||||
; /* abs() */
|
||||
; if (a->tone_slide_step<0) a->tone_slide_step=-a$
|
||||
; a->tone_delta=GetNoteFreq(a->note,pt3)-
|
||||
; GetNoteFreq(prev_note,pt3);
|
||||
; a->slide_to_note=a->note;
|
||||
; a->note=prev_note;
|
||||
; if (pt3->version >= 6) {
|
||||
; a->tone_sliding = prev_sliding;
|
||||
; }
|
||||
; if ((a->tone_delta - a->tone_sliding) < 0) {
|
||||
; a->tone_slide_step = -a->tone_slide_ste$
|
||||
; }
|
||||
; }
|
||||
; /* Position in Sample */
|
||||
; else if (a->spec_command==0x3) {
|
||||
; current_val=pt3->data[(*addr)];
|
||||
; a->sample_position=current_val;
|
||||
; (*addr)++;
|
||||
; }
|
||||
; /* Position in Ornament */
|
||||
; else if (a->spec_command==0x4) {
|
||||
; current_val=pt3->data[(*addr)];
|
||||
; a->ornament_position=current_val;
|
||||
; (*addr)++;
|
||||
; }
|
||||
; /* Vibrato */
|
||||
; else if (a->spec_command==0x5) {
|
||||
; current_val=pt3->data[(*addr)];
|
||||
; a->onoff_delay=current_val;
|
||||
; (*addr)++;
|
||||
; current_val=pt3->data[(*addr)];
|
||||
; a->offon_delay=current_val;
|
||||
; (*addr)++;
|
||||
|
||||
; a->onoff=a->onoff_delay;
|
||||
; a->tone_slide_count=0;
|
||||
; a->tone_sliding=0;
|
||||
|
||||
; }
|
||||
; /* Envelope Down */
|
||||
; else if (a->spec_command==0x8) {
|
||||
|
||||
; /* delay? */
|
||||
; current_val=pt3->data[(*addr)];
|
||||
; pt3->envelope_delay=current_val;
|
||||
; pt3->envelope_delay_orig=current_val;
|
||||
; a->spec_delay=current_val;
|
||||
; (*addr)++;
|
||||
|
||||
; /* Low? */
|
||||
; current_val=pt3->data[(*addr)];
|
||||
; a->spec_lo=current_val&0xff;
|
||||
; (*addr)++;
|
||||
|
||||
; /* High? */
|
||||
; current_val=pt3->data[(*addr)];
|
||||
; a->spec_hi=current_val&0xff;
|
||||
; (*addr)++;
|
||||
; pt3->envelope_slide_add=(a->spec_hi<<8)|(a->spe$
|
||||
; /* Set Speed */
|
||||
; else if (a->spec_command==0x9) {
|
||||
; current_val=pt3->data[(*addr)];
|
||||
; a->spec_lo=current_val;
|
||||
; pt3->speed=current_val;
|
||||
; (*addr)++;
|
||||
; }
|
||||
; break;
|
||||
; }
|
||||
|
||||
rts
|
||||
|
||||
;=====================================
|
||||
@ -288,6 +624,18 @@ decode_note:
|
||||
;=====================================
|
||||
|
||||
pt3_decode_line:
|
||||
; decode_note(&pt3->a,&(pt3->a_addr),pt3);
|
||||
jsr decode_note
|
||||
|
||||
; decode_note(&pt3->b,&(pt3->b_addr),pt3);
|
||||
jsr decode_note
|
||||
|
||||
; decode_note(&pt3->c,&(pt3->c_addr),pt3);
|
||||
jsr decode_note
|
||||
|
||||
; if (pt3->a.all_done && pt3->b.all_done && pt3->c.all_done) {
|
||||
; return 1;
|
||||
; }
|
||||
|
||||
rts
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user