mirror of
https://github.com/deater/dos33fsprogs.git
synced 2025-01-27 07:30:12 +00:00
interlace: split the file into smaller chunks
This commit is contained in:
Vince Weaver
parent
9222100623
commit
101e7b279f
@ -45,7 +45,8 @@ RASTERBARS_SOUND: rasterbars_sound.o
|
||||
|
||||
rasterbars_sound.o: rasterbars_sound.s gr_copy.s \
|
||||
rasterbars_screen.s rasterbars_table.s movement_table.s rb_bg.inc \
|
||||
pt3_lib_core.s pt3_lib_init.s pt3_lib_mockingboard.s pt3_write_frame.s
|
||||
pt3_lib_core.s pt3_lib_init.s pt3_lib_mockingboard.s \
|
||||
pt3_lib_sample_ornament.s pt3_write_frame.s
|
||||
ca65 -o rasterbars_sound.o rasterbars_sound.s -l rasterbars_sound.lst
|
||||
|
||||
|
||||
|
||||
@ -90,160 +90,8 @@ end_vars=$80+(NOTE_STRUCT_SIZE*3)
|
||||
|
||||
.align $100
|
||||
|
||||
;===========================
|
||||
; Load Ornament 0/Sample 1
|
||||
;===========================
|
||||
|
||||
load_ornament0_sample1:
|
||||
lda #0 ; 2
|
||||
jsr load_ornament ; 6
|
||||
; fall through
|
||||
|
||||
;===========================
|
||||
; Load Sample
|
||||
;===========================
|
||||
; sample in A
|
||||
; which note offset in X
|
||||
|
||||
; Sample table pointers are 16-bits little endian
|
||||
; There are 32 of these pointers starting at $6a:$69
|
||||
; Our sample starts at address (A*2)+that pointer
|
||||
; We point SAMPLE_H:SAMPLE_L to this
|
||||
; then we load the length/data values
|
||||
; and then leave SAMPLE_H:SAMPLE_L pointing to begnning of
|
||||
; the sample data
|
||||
|
||||
; Optimization:
|
||||
; see comments on ornament setting
|
||||
|
||||
load_sample1:
|
||||
lda #1 ; 2
|
||||
|
||||
load_sample:
|
||||
|
||||
sty PT3_TEMP ; 3
|
||||
|
||||
;pt3->ornament_patterns[i]=
|
||||
; (pt3->data[0x6a+(i*2)]<<8)|pt3->data[0x69+(i*2)];
|
||||
|
||||
asl ; A*2 ; 2
|
||||
tay ; 2
|
||||
|
||||
; Set the initial sample pointer
|
||||
; a->sample_pointer=pt3->sample_patterns[a->sample];
|
||||
|
||||
lda PT3_LOC+PT3_SAMPLE_LOC_L,Y ; 4+
|
||||
sta SAMPLE_L ; 3
|
||||
|
||||
lda PT3_LOC+PT3_SAMPLE_LOC_L+1,Y ; 4+
|
||||
|
||||
; assume pt3 file is at page boundary
|
||||
adc #>PT3_LOC ; 2
|
||||
sta SAMPLE_H ; 3
|
||||
|
||||
; Set the loop value
|
||||
; a->sample_loop=pt3->data[a->sample_pointer];
|
||||
|
||||
ldy #0 ; 2
|
||||
lda (SAMPLE_L),Y ; 5+
|
||||
sta note_a+NOTE_SAMPLE_LOOP,X ; 5
|
||||
|
||||
; Set the length value
|
||||
; a->sample_length=pt3->data[a->sample_pointer];
|
||||
|
||||
iny ; 2
|
||||
lda (SAMPLE_L),Y ; 5+
|
||||
sta note_a+NOTE_SAMPLE_LENGTH,X ; 5
|
||||
|
||||
; Set pointer to beginning of samples
|
||||
|
||||
lda SAMPLE_L ; 3
|
||||
adc #$2 ; 2
|
||||
sta note_a+NOTE_SAMPLE_POINTER_L,X ; 5
|
||||
lda SAMPLE_H ; 3
|
||||
adc #$0 ; 2
|
||||
sta note_a+NOTE_SAMPLE_POINTER_H,X ; 5
|
||||
|
||||
ldy PT3_TEMP ; 3
|
||||
|
||||
rts ; 6
|
||||
;============
|
||||
; 76
|
||||
|
||||
|
||||
;===========================
|
||||
; Load Ornament
|
||||
;===========================
|
||||
; ornament value in A
|
||||
; note offset in X
|
||||
|
||||
; Ornament table pointers are 16-bits little endian
|
||||
; There are 16 of these pointers starting at $aa:$a9
|
||||
; Our ornament starts at address (A*2)+that pointer
|
||||
; We point ORNAMENT_H:ORNAMENT_L to this
|
||||
; then we load the length/data values
|
||||
; and then leave ORNAMENT_H:ORNAMENT_L pointing to begnning of
|
||||
; the ornament data
|
||||
|
||||
; Optimization:
|
||||
; Loop and length only used once, can be located negative
|
||||
; from the pointer, but 6502 doesn't make addressing like that
|
||||
; easy. Can't self modify as channels A/B/C have own copies
|
||||
; of the var.
|
||||
|
||||
load_ornament:
|
||||
|
||||
sty PT3_TEMP ; save Y value ; 3
|
||||
|
||||
;pt3->ornament_patterns[i]=
|
||||
; (pt3->data[0xaa+(i*2)]<<8)|pt3->data[0xa9+(i*2)];
|
||||
|
||||
asl ; A*2 ; 2
|
||||
tay ; 2
|
||||
|
||||
; a->ornament_pointer=pt3->ornament_patterns[a->ornament];
|
||||
|
||||
lda PT3_LOC+PT3_ORNAMENT_LOC_L,Y ; 4+
|
||||
sta ORNAMENT_L ; 3
|
||||
|
||||
lda PT3_LOC+PT3_ORNAMENT_LOC_L+1,Y ; 4+
|
||||
|
||||
; we're assuming PT3 is loaded to a page boundary
|
||||
|
||||
adc #>PT3_LOC ; 2
|
||||
sta ORNAMENT_H ; 3
|
||||
|
||||
lda #0 ; 2
|
||||
sta note_a+NOTE_ORNAMENT_POSITION,X ; 5
|
||||
|
||||
tay ; 2
|
||||
|
||||
; Set the loop value
|
||||
; a->ornament_loop=pt3->data[a->ornament_pointer];
|
||||
lda (ORNAMENT_L),Y ; 5+
|
||||
sta note_a+NOTE_ORNAMENT_LOOP,X ; 5
|
||||
|
||||
; Set the length value
|
||||
; a->ornament_length=pt3->data[a->ornament_pointer];
|
||||
iny ; 2
|
||||
lda (ORNAMENT_L),Y ; 5+
|
||||
sta note_a+NOTE_ORNAMENT_LENGTH,X ; 5
|
||||
|
||||
; Set the pointer to the value past the length
|
||||
|
||||
lda ORNAMENT_L ; 3
|
||||
adc #$2 ; 2
|
||||
sta note_a+NOTE_ORNAMENT_POINTER_L,X ; 5
|
||||
lda ORNAMENT_H ; 3
|
||||
adc #$0 ; 2
|
||||
sta note_a+NOTE_ORNAMENT_POINTER_H,X ; 5
|
||||
|
||||
ldy PT3_TEMP ; restore Y value ; 3
|
||||
|
||||
rts ; 6
|
||||
|
||||
;============
|
||||
; 83
|
||||
.include "pt3_lib_sample_ornament.s"
|
||||
|
||||
|
||||
|
||||
|
||||
164
interlace_demo/pt3_lib_sample_ornament.s
Normal file
164
interlace_demo/pt3_lib_sample_ornament.s
Normal file
@ -0,0 +1,164 @@
|
||||
;========================================================================
|
||||
; EVERYTHING IS CYCLE COUNTED
|
||||
;========================================================================
|
||||
|
||||
|
||||
;===========================
|
||||
; Load Ornament 0/Sample 1
|
||||
;===========================
|
||||
|
||||
load_ornament0_sample1:
|
||||
lda #0 ; 2
|
||||
jsr load_ornament ; 6
|
||||
; fall through
|
||||
|
||||
;===========================
|
||||
; Load Sample
|
||||
;===========================
|
||||
; sample in A
|
||||
; which note offset in X
|
||||
|
||||
; Sample table pointers are 16-bits little endian
|
||||
; There are 32 of these pointers starting at $6a:$69
|
||||
; Our sample starts at address (A*2)+that pointer
|
||||
; We point SAMPLE_H:SAMPLE_L to this
|
||||
; then we load the length/data values
|
||||
; and then leave SAMPLE_H:SAMPLE_L pointing to begnning of
|
||||
; the sample data
|
||||
|
||||
; Optimization:
|
||||
; see comments on ornament setting
|
||||
|
||||
load_sample1:
|
||||
lda #1 ; 2
|
||||
|
||||
load_sample:
|
||||
|
||||
sty PT3_TEMP ; 3
|
||||
|
||||
;pt3->ornament_patterns[i]=
|
||||
; (pt3->data[0x6a+(i*2)]<<8)|pt3->data[0x69+(i*2)];
|
||||
|
||||
asl ; A*2 ; 2
|
||||
tay ; 2
|
||||
|
||||
; Set the initial sample pointer
|
||||
; a->sample_pointer=pt3->sample_patterns[a->sample];
|
||||
|
||||
lda PT3_LOC+PT3_SAMPLE_LOC_L,Y ; 4+
|
||||
sta SAMPLE_L ; 3
|
||||
|
||||
lda PT3_LOC+PT3_SAMPLE_LOC_L+1,Y ; 4+
|
||||
|
||||
; assume pt3 file is at page boundary
|
||||
adc #>PT3_LOC ; 2
|
||||
sta SAMPLE_H ; 3
|
||||
|
||||
; Set the loop value
|
||||
; a->sample_loop=pt3->data[a->sample_pointer];
|
||||
|
||||
ldy #0 ; 2
|
||||
lda (SAMPLE_L),Y ; 5+
|
||||
sta note_a+NOTE_SAMPLE_LOOP,X ; 5
|
||||
|
||||
; Set the length value
|
||||
; a->sample_length=pt3->data[a->sample_pointer];
|
||||
|
||||
iny ; 2
|
||||
lda (SAMPLE_L),Y ; 5+
|
||||
sta note_a+NOTE_SAMPLE_LENGTH,X ; 5
|
||||
|
||||
; Set pointer to beginning of samples
|
||||
|
||||
lda SAMPLE_L ; 3
|
||||
adc #$2 ; 2
|
||||
sta note_a+NOTE_SAMPLE_POINTER_L,X ; 5
|
||||
lda SAMPLE_H ; 3
|
||||
adc #$0 ; 2
|
||||
sta note_a+NOTE_SAMPLE_POINTER_H,X ; 5
|
||||
|
||||
ldy PT3_TEMP ; 3
|
||||
|
||||
rts ; 6
|
||||
;============
|
||||
; 76
|
||||
|
||||
|
||||
;===========================
|
||||
; Load Ornament
|
||||
;===========================
|
||||
; ornament value in A
|
||||
; note offset in X
|
||||
|
||||
; Ornament table pointers are 16-bits little endian
|
||||
; There are 16 of these pointers starting at $aa:$a9
|
||||
; Our ornament starts at address (A*2)+that pointer
|
||||
; We point ORNAMENT_H:ORNAMENT_L to this
|
||||
; then we load the length/data values
|
||||
; and then leave ORNAMENT_H:ORNAMENT_L pointing to begnning of
|
||||
; the ornament data
|
||||
|
||||
; Optimization:
|
||||
; Loop and length only used once, can be located negative
|
||||
; from the pointer, but 6502 doesn't make addressing like that
|
||||
; easy. Can't self modify as channels A/B/C have own copies
|
||||
; of the var.
|
||||
|
||||
load_ornament:
|
||||
|
||||
sty PT3_TEMP ; save Y value ; 3
|
||||
|
||||
;pt3->ornament_patterns[i]=
|
||||
; (pt3->data[0xaa+(i*2)]<<8)|pt3->data[0xa9+(i*2)];
|
||||
|
||||
asl ; A*2 ; 2
|
||||
tay ; 2
|
||||
|
||||
; a->ornament_pointer=pt3->ornament_patterns[a->ornament];
|
||||
|
||||
lda PT3_LOC+PT3_ORNAMENT_LOC_L,Y ; 4+
|
||||
sta ORNAMENT_L ; 3
|
||||
|
||||
lda PT3_LOC+PT3_ORNAMENT_LOC_L+1,Y ; 4+
|
||||
|
||||
; we're assuming PT3 is loaded to a page boundary
|
||||
|
||||
adc #>PT3_LOC ; 2
|
||||
sta ORNAMENT_H ; 3
|
||||
|
||||
lda #0 ; 2
|
||||
sta note_a+NOTE_ORNAMENT_POSITION,X ; 5
|
||||
|
||||
tay ; 2
|
||||
|
||||
; Set the loop value
|
||||
; a->ornament_loop=pt3->data[a->ornament_pointer];
|
||||
lda (ORNAMENT_L),Y ; 5+
|
||||
sta note_a+NOTE_ORNAMENT_LOOP,X ; 5
|
||||
|
||||
; Set the length value
|
||||
; a->ornament_length=pt3->data[a->ornament_pointer];
|
||||
iny ; 2
|
||||
lda (ORNAMENT_L),Y ; 5+
|
||||
sta note_a+NOTE_ORNAMENT_LENGTH,X ; 5
|
||||
|
||||
; Set the pointer to the value past the length
|
||||
|
||||
lda ORNAMENT_L ; 3
|
||||
adc #$2 ; 2
|
||||
sta note_a+NOTE_ORNAMENT_POINTER_L,X ; 5
|
||||
lda ORNAMENT_H ; 3
|
||||
adc #$0 ; 2
|
||||
sta note_a+NOTE_ORNAMENT_POINTER_H,X ; 5
|
||||
|
||||
ldy PT3_TEMP ; restore Y value ; 3
|
||||
|
||||
rts ; 6
|
||||
|
||||
;============
|
||||
; 83
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user