mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-10-12 05:24:02 +00:00
interlace: split off pt3_set_pattern
This commit is contained in:
parent
83b46be19d
commit
a2fd3f42b3
@ -94,6 +94,7 @@ end_vars=$80+(NOTE_STRUCT_SIZE*3)
|
||||
.include "pt3_lib_sample_ornament.s"
|
||||
.include "pt3_lib_calculate_note.s"
|
||||
.include "pt3_lib_decode_note.s"
|
||||
.include "pt3_lib_set_pattern.s"
|
||||
.include "pt3_lib_make_frame.s"
|
||||
.include "pt3_lib_do_frame.s"
|
||||
|
||||
|
@ -2,113 +2,6 @@
|
||||
; EVERYTHING IS CYCLE COUNTED
|
||||
;========================================================================
|
||||
|
||||
;=====================================
|
||||
; Set Pattern
|
||||
;=====================================
|
||||
|
||||
pt3_set_pattern:
|
||||
|
||||
; Lookup current pattern in pattern table
|
||||
current_pattern_smc:
|
||||
ldy #$d1 ; 2
|
||||
lda PT3_LOC+PT3_PATTERN_TABLE,Y ; 4+
|
||||
|
||||
; if value is $FF we are at the end of the song
|
||||
cmp #$ff ; 2
|
||||
bne not_done ; 3
|
||||
|
||||
is_done:
|
||||
; done with song, set it to non-zero
|
||||
sta DONE_SONG ; 3
|
||||
rts ; 6
|
||||
|
||||
;============
|
||||
; 20 if end
|
||||
|
||||
not_done:
|
||||
|
||||
; set up the three pattern address pointers
|
||||
|
||||
asl ; mul pattern offset by two, as word sized ; 2
|
||||
tay ; 2
|
||||
|
||||
; point PATTERN_H/PATTERN_L to the pattern address table
|
||||
|
||||
clc ; 2
|
||||
lda PT3_LOC+PT3_PATTERN_LOC_L ; 4
|
||||
sta PATTERN_L ; 3
|
||||
lda PT3_LOC+PT3_PATTERN_LOC_H ; 4
|
||||
adc #>PT3_LOC ; assume page boundary ; 2
|
||||
sta PATTERN_H ; 3
|
||||
|
||||
; First 16-bits points to the Channel A address
|
||||
lda (PATTERN_L),Y ; 5+
|
||||
sta note_a+NOTE_ADDR_L ; 4
|
||||
iny ; 2
|
||||
lda (PATTERN_L),Y ; 5+
|
||||
adc #>PT3_LOC ; assume page boundary ; 2
|
||||
sta note_a+NOTE_ADDR_H ; 4
|
||||
iny ; 2
|
||||
|
||||
; Next 16-bits points to the Channel B address
|
||||
lda (PATTERN_L),Y ; 5+
|
||||
sta note_b+NOTE_ADDR_L ; 4
|
||||
iny ; 2
|
||||
lda (PATTERN_L),Y ; 5+
|
||||
adc #>PT3_LOC ; assume page boundary ; 2
|
||||
sta note_b+NOTE_ADDR_H ; 4
|
||||
iny ; 2
|
||||
|
||||
; Next 16-bits points to the Channel C address
|
||||
lda (PATTERN_L),Y ; 5+
|
||||
sta note_c+NOTE_ADDR_L ; 4
|
||||
iny ; 2
|
||||
lda (PATTERN_L),Y ; 5+
|
||||
adc #>PT3_LOC ; assume page boundary ; 2
|
||||
sta note_c+NOTE_ADDR_H ; 4
|
||||
|
||||
; clear out the noise channel
|
||||
lda #0 ; 2
|
||||
sta pt3_noise_period_smc+1 ; 4
|
||||
|
||||
; Set all three channels as active
|
||||
; FIXME: num_channels, may need to be 6 if doing 6-channel pt3?
|
||||
lda #3 ; 2
|
||||
sta pt3_pattern_done_smc+1 ; 4
|
||||
|
||||
rts ; 6
|
||||
|
||||
|
||||
;==========================
|
||||
; pattern done early!
|
||||
|
||||
early_end:
|
||||
; A is pattern_done which is zero at this point
|
||||
inc current_pattern_smc+1 ; increment pattern ; 6
|
||||
sta current_line_smc+1 ; 4
|
||||
sta current_subframe_smc+1 ; 4
|
||||
|
||||
; always goes to set_pattern here?
|
||||
|
||||
jmp set_pattern ; 3
|
||||
|
||||
check_subframe:
|
||||
lda current_subframe_smc+1 ; 4
|
||||
bne pattern_good ; 2/3
|
||||
|
||||
set_pattern:
|
||||
; load a new pattern in
|
||||
jsr pt3_set_pattern ;6+?
|
||||
|
||||
lda DONE_SONG ; 3
|
||||
beq pt3_new_line ; 2/3
|
||||
rts ; 6
|
||||
|
||||
|
||||
;==========================================
|
||||
; real entry point
|
||||
|
||||
|
||||
|
||||
;=====================================
|
||||
;=====================================
|
||||
@ -138,13 +31,22 @@ current_line_smc:
|
||||
beq check_subframe ; 3
|
||||
; -1
|
||||
|
||||
;=============================
|
||||
; State B
|
||||
;=============================
|
||||
;
|
||||
pattern_good:
|
||||
; see if we need a new line
|
||||
|
||||
current_subframe_smc:
|
||||
lda #$d1 ; 2
|
||||
bne line_good ; 2/3
|
||||
bne line_good ; 3
|
||||
; -1
|
||||
|
||||
;=============================
|
||||
; State C
|
||||
;=============================
|
||||
;
|
||||
pt3_new_line:
|
||||
; decode a new line
|
||||
jsr pt3_decode_line ; 6+?
|
||||
@ -157,7 +59,11 @@ pt3_pattern_done_smc:
|
||||
beq early_end ; 2/3
|
||||
|
||||
|
||||
;========================================
|
||||
;=============================
|
||||
; State D
|
||||
;=============================
|
||||
;
|
||||
|
||||
line_good:
|
||||
|
||||
; Increment everything
|
||||
@ -169,7 +75,13 @@ line_good:
|
||||
pt3_speed_smc:
|
||||
eor #$d1 ; 2
|
||||
|
||||
bne do_frame ; 2/3
|
||||
bne do_frame ; 3
|
||||
; -1
|
||||
|
||||
;=============================
|
||||
; State G
|
||||
;=============================
|
||||
;
|
||||
|
||||
next_line:
|
||||
sta current_subframe_smc+1 ; reset subframe to 0 ; 4
|
||||
|
108
interlace_demo/pt3_lib_set_pattern.s
Normal file
108
interlace_demo/pt3_lib_set_pattern.s
Normal file
@ -0,0 +1,108 @@
|
||||
;========================================================================
|
||||
; EVERYTHING IS CYCLE COUNTED
|
||||
;========================================================================
|
||||
|
||||
;=====================================
|
||||
; Set Pattern
|
||||
;=====================================
|
||||
|
||||
pt3_set_pattern:
|
||||
|
||||
; Lookup current pattern in pattern table
|
||||
current_pattern_smc:
|
||||
ldy #$d1 ; 2
|
||||
lda PT3_LOC+PT3_PATTERN_TABLE,Y ; 4+
|
||||
|
||||
; if value is $FF we are at the end of the song
|
||||
cmp #$ff ; 2
|
||||
bne not_done ; 3
|
||||
|
||||
is_done:
|
||||
; done with song, set it to non-zero
|
||||
sta DONE_SONG ; 3
|
||||
rts ; 6
|
||||
|
||||
;============
|
||||
; 20 if end
|
||||
|
||||
not_done:
|
||||
|
||||
; set up the three pattern address pointers
|
||||
|
||||
asl ; mul pattern offset by two, as word sized ; 2
|
||||
tay ; 2
|
||||
|
||||
; point PATTERN_H/PATTERN_L to the pattern address table
|
||||
|
||||
clc ; 2
|
||||
lda PT3_LOC+PT3_PATTERN_LOC_L ; 4
|
||||
sta PATTERN_L ; 3
|
||||
lda PT3_LOC+PT3_PATTERN_LOC_H ; 4
|
||||
adc #>PT3_LOC ; assume page boundary ; 2
|
||||
sta PATTERN_H ; 3
|
||||
|
||||
; First 16-bits points to the Channel A address
|
||||
lda (PATTERN_L),Y ; 5+
|
||||
sta note_a+NOTE_ADDR_L ; 4
|
||||
iny ; 2
|
||||
lda (PATTERN_L),Y ; 5+
|
||||
adc #>PT3_LOC ; assume page boundary ; 2
|
||||
sta note_a+NOTE_ADDR_H ; 4
|
||||
iny ; 2
|
||||
|
||||
; Next 16-bits points to the Channel B address
|
||||
lda (PATTERN_L),Y ; 5+
|
||||
sta note_b+NOTE_ADDR_L ; 4
|
||||
iny ; 2
|
||||
lda (PATTERN_L),Y ; 5+
|
||||
adc #>PT3_LOC ; assume page boundary ; 2
|
||||
sta note_b+NOTE_ADDR_H ; 4
|
||||
iny ; 2
|
||||
|
||||
; Next 16-bits points to the Channel C address
|
||||
lda (PATTERN_L),Y ; 5+
|
||||
sta note_c+NOTE_ADDR_L ; 4
|
||||
iny ; 2
|
||||
lda (PATTERN_L),Y ; 5+
|
||||
adc #>PT3_LOC ; assume page boundary ; 2
|
||||
sta note_c+NOTE_ADDR_H ; 4
|
||||
|
||||
; clear out the noise channel
|
||||
lda #0 ; 2
|
||||
sta pt3_noise_period_smc+1 ; 4
|
||||
|
||||
; Set all three channels as active
|
||||
; FIXME: num_channels, may need to be 6 if doing 6-channel pt3?
|
||||
lda #3 ; 2
|
||||
sta pt3_pattern_done_smc+1 ; 4
|
||||
|
||||
rts ; 6
|
||||
|
||||
|
||||
;==========================
|
||||
; pattern done early!
|
||||
|
||||
early_end:
|
||||
; A is pattern_done which is zero at this point
|
||||
inc current_pattern_smc+1 ; increment pattern ; 6
|
||||
sta current_line_smc+1 ; 4
|
||||
sta current_subframe_smc+1 ; 4
|
||||
|
||||
; always goes to set_pattern here?
|
||||
|
||||
jmp set_pattern ; 3
|
||||
|
||||
check_subframe:
|
||||
lda current_subframe_smc+1 ; 4
|
||||
bne pattern_good ; 2/3
|
||||
|
||||
set_pattern:
|
||||
; load a new pattern in
|
||||
jsr pt3_set_pattern ;6+?
|
||||
|
||||
lda DONE_SONG ; 3
|
||||
beq pt3_new_line ; 2/3
|
||||
rts ; 6
|
||||
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user