still more

This commit is contained in:
Peter Ferrie 2019-05-29 13:34:10 -07:00
parent ab3311fd26
commit 9491bce9f4
4 changed files with 230 additions and 276 deletions

View File

@ -4,7 +4,6 @@ clear_screens:
;===================================
lda #$0
sta DRAW_PAGE
jsr clear_top
jsr clear_bottom
@ -13,7 +12,6 @@ clear_screens:
;===================================
lda #$4
sta DRAW_PAGE
jsr clear_top
jmp clear_bottom
@ -29,11 +27,12 @@ clear_screens:
; (pageX,40rows): 50*120+4+6 = 6010 = 6.0ms 166Hz
; 50*120+4+6+37 = 6055 = 6.0ms 166Hz
clear_top:
lda #0 ; 2
clear_top_a:
sta COLOR ; 3
ldy #0 ; 2
clear_top_y:
sty COLOR ; 3
sta DRAW_PAGE ; 3
clc ; 2
lda DRAW_PAGE ; 3
adc #4 ; 2
sta __ctf+2 ; 3
@ -80,7 +79,6 @@ clear_bottoms:
;===================================
lda #$0
sta DRAW_PAGE
jsr clear_bottom
;===================================
@ -88,7 +86,6 @@ clear_bottoms:
;===================================
lda #$4
sta DRAW_PAGE
; fall through
;=========================================================
@ -97,8 +94,8 @@ clear_bottoms:
; clear bottom of draw page
clear_bottom:
sta DRAW_PAGE ; 3
clc ; 2
lda DRAW_PAGE ; 3
adc #6 ; 2
sta __cbf2+2 ; 3
@ -130,7 +127,6 @@ clear_screens_notext:
;===================================
lda #$0
sta DRAW_PAGE
jsr clear_all
;===================================
@ -138,7 +134,6 @@ clear_screens_notext:
;===================================
lda #$4
sta DRAW_PAGE
; fall through
@ -149,8 +144,8 @@ clear_screens_notext:
; clear color: clear_all_color+1
clear_all:
sta DRAW_PAGE ; 3
clc ; 2
lda DRAW_PAGE ; 3
adc #4 ; 2
sta __caf+2 ; 3

View File

@ -56,7 +56,7 @@ pt3_play_music:
move_to_next:
; same as "press right"
lda #$20
ldx #$20
jmp quiet_exit
;======================================
@ -200,7 +200,7 @@ yes_bar:
lowbar:
jsr fire_setline
lda DONE_PLAYING
ldx DONE_PLAYING
bcs quiet_exit ; branch always
@ -209,26 +209,23 @@ lowbar:
key_M:
cmp #'M'
bne key_L
bne key_L ; set carry if true
ldx #'0'+$80
lda convert_177
eor #$1
sta convert_177
beq at_1MHz
beq at_MHz
; update text on screen
lda #'7'+$80
sta $7F4
sta $BF4
bne done_key ; branch always
ldx #'7'+$80
at_1MHz:
lda #'0'+$80
sta $7F4
sta $BF4
at_MHz:
stx $7F4
stx $BF4
bne done_key ; branch always
bcs done_key ; branch always
;===========================
@ -236,8 +233,9 @@ at_1MHz:
key_L:
cmp #'L'
bne key_left
bne key_left ; set carry if true
ldx #'/'+$80
lda LOOP
eor #$1
sta LOOP
@ -245,49 +243,42 @@ key_L:
; update text on screen
lda #'L'+$80
sta $7D0+18
sta $BD0+18
bne done_key ; branch always
ldx #'L'+$80
music_looping:
lda #'/'+$80
sta $7D0+18
sta $BD0+18
bne done_key ; branch always
bcs done_key ; branch always
;======================
; left key, to prev song
key_left:
ldx #$40
cmp #'A'
bne key_right
lda #$40
bne quiet_exit
beq quiet_exit
;========================
; right key, to next song
key_right:
ldx #$20
cmp #'D'
bne done_key
lda #$20
;========================
; stop playing for now
; quiet down the Mockingboard
; (otherwise will be stuck on last note)
quiet_exit:
sta DONE_PLAYING
stx DONE_PLAYING
jsr clear_ay_both
lda #$ff ; also mute the channel
sta AY_REGISTERS+7 ; just in case
;ldx #$ff ; also mute the channel
stx AY_REGISTERS+7 ; just in case
done_key:
exit_interrupt:

View File

@ -52,8 +52,8 @@ NOTE_SAMPLE_POSITION =26
NOTE_ENVELOPE_SLIDING =27
NOTE_NOISE_SLIDING =28
NOTE_AMPLITUDE_SLIDING =29
NOTE_ONOFF_DELAY =30
NOTE_OFFON_DELAY =31
NOTE_ONOFF_DELAY =30 ;ordering of DELAYs is hard-coded now
NOTE_OFFON_DELAY =31 ;ordering of DELAYs is hard-coded now
NOTE_TONE_SLIDE_STEP_L =32
NOTE_TONE_SLIDE_STEP_H =33
NOTE_TONE_SLIDE_DELAY =34
@ -278,16 +278,14 @@ load_ornament:
; (pt3->data[0xaa+(i*2)]<<8)|pt3->data[0xa9+(i*2)];
asl ; A*2 ; 2
adc #PT3_ORNAMENT_LOC_L ; 2
tay ; 2
; a->ornament_pointer=pt3->ornament_patterns[a->ornament];
lda PT3_LOC,Y ; 4+
lda PT3_LOC+PT3_ORNAMENT_LOC_L,Y ; 4+
sta ORNAMENT_L ; 3
iny ; 2
lda PT3_LOC,Y ; 4+
lda PT3_LOC+PT3_ORNAMENT_LOC_L+1,Y ; 4+
; we're assuming PT3 is loaded to a page boundary
@ -324,7 +322,7 @@ load_ornament:
rts ; 6
;============
; 87
; 83
;===========================
; Load Sample
@ -351,17 +349,15 @@ load_sample:
; (pt3->data[0x6a+(i*2)]<<8)|pt3->data[0x69+(i*2)];
asl ; A*2 ; 2
adc #PT3_SAMPLE_LOC_L ; 2
tay ; 2
; Set the initial sample pointer
; a->sample_pointer=pt3->sample_patterns[a->sample];
lda PT3_LOC,Y ; 4+
lda PT3_LOC+PT3_SAMPLE_LOC_L,Y ; 4+
sta SAMPLE_L ; 3
iny ; 2
lda PT3_LOC,Y ; 4+
lda PT3_LOC+PT3_SAMPLE_LOC_L+1,Y ; 4+
; assume pt3 file is at page boundary
adc #>PT3_LOC ; 2
@ -394,7 +390,7 @@ load_sample:
rts ; 6
;============
; 80
; 76
;====================================
; pt3_init_song
@ -488,9 +484,116 @@ not_ascii_number:
; carry clear = 3.3/3.4 table
; carry set = 3.5 table
jsr VolTableCreator ; 6+??
;==========================
; VolTableCreator
;==========================
; Creates the appropriate volume table
; based on z80 code by Ivan Roshin ZXAYHOBETA/VTII10bG.asm
;
; Called with carry==0 for 3.3/3.4 table
; Called with carry==1 for 3.5 table
; 177f-1932 = 435 bytes, not that much better than 512 of lookup
VolTableCreator:
; Init initial variables
lda #$0
sta z80_h
sta z80_d
ldy #$11
; Set up self modify
ldx #$2A ; ROL for self-modify
bcs vol_type_35
vol_type_33:
; For older table, we set initial conditions a bit
; different
dey
tya
ldx #$ea ; NOP for self modify
vol_type_35:
sty z80_l ; l=16 or 17
sta z80_e ; e=16 or 0
stx vol_smc ; set the self-modify code
ldy #16 ; skip first row, all zeros
ldx #16 ; c=16
vol_outer:
lda z80_h
pha ; save H
clc ; add HL,DE
lda z80_l
adc z80_e
sta z80_e
lda z80_h
adc z80_d
sta z80_d ; carry is important
; sbc hl,hl
lda #$ff
bcs vol_ffs
vol_zeros:
lda #0
vol_ffs:
vol_write:
sta z80_h
pha
vol_inner:
pla
pha
vol_smc:
nop ; nop or ROL depending
lda z80_h
adc #$0 ; a=a+carry;
sta VolumeTable,Y
iny
pla ; add HL,DE
adc z80_e
pha
lda z80_h
adc z80_d
sta z80_h
inx ; inc C
txa ; a=c
and #$f
bne vol_inner
pla
pla
sta z80_h ; restore H
lda z80_e ; a=e
cmp #$77
bne vol_m3
inc z80_e
vol_m3:
txa ; a=c
bne vol_outer
vol_done:
rts
rts ; 6
@ -544,7 +647,6 @@ note_enabled:
; a->tone+=(pt3->data[a->sample_pointer + a->sample_position*4+3])<<8;
; a->tone += a->tone_accumulator;
iny ; 2
clc ; 2
lda (SAMPLE_L),Y ; 5+
adc note_a+NOTE_TONE_ACCUMULATOR_L,X ; 4+
sta note_a+NOTE_TONE_L,X ; 4
@ -794,8 +896,9 @@ check_envelope_enable:
; if (((b0 & 0x1) == 0) && ( a->envelope_enabled)) {
lda sample_b0
and #$1
bne envelope_slide
lsr
tay
bcs envelope_slide
lda note_a+NOTE_ENVELOPE_ENABLED,X
beq envelope_slide
@ -810,9 +913,6 @@ check_envelope_enable:
envelope_slide:
lda sample_b0
lsr
tay
; Envelope slide
; If b1 top bits are 10 or 11
@ -943,8 +1043,8 @@ handle_onoff:
bne do_offon
do_onoff:
lda note_a+NOTE_ONOFF_DELAY,X ; if (a->enabled) a->onoff=a->onoff_delay;
jmp put_offon
dex ; select ONOFF
;lda note_a+NOTE_ONOFF_DELAY,X ; if (a->enabled) a->onoff=a->onoff_delay;
do_offon:
lda note_a+NOTE_OFFON_DELAY,X ; else a->onoff=a->offon_delay;
put_offon:
@ -977,23 +1077,46 @@ spec_command: .byte $0
; 5X: 14+5+5+ 102
;
decode_note:
; Init vars
lda #0 ; 2
sta spec_command ; 4
sta decode_done ; 4
; Skip decode if note still running
lda note_a+NOTE_LEN_COUNT,X ; 4+
cmp #2 ; 2
bcc keep_decoding ; blt, assume not negative ; 2/3
stop_decoding:
; we are still running, decrement and early return
dec note_a+NOTE_LEN_COUNT,X ; 7
rts ; 6
;=====================================
; Decode Line
;=====================================
pt3_decode_line:
; decode_note(&pt3->a,&(pt3->a_addr),pt3);
ldx #(NOTE_STRUCT_SIZE*0)
jsr decode_note
; decode_note(&pt3->b,&(pt3->b_addr),pt3);
ldx #(NOTE_STRUCT_SIZE*1)
jsr decode_note
; decode_note(&pt3->c,&(pt3->c_addr),pt3);
ldx #(NOTE_STRUCT_SIZE*2)
;;jsr decode_note ; fall through
; if (pt3->a.all_done && pt3->b.all_done && pt3->c.all_done) {
; return 1;
; }
decode_note:
; Init vars
ldy #0 ; 2
sty spec_command ; 4
sty decode_done ; 4
; Skip decode if note still running
lda note_a+NOTE_LEN_COUNT,X ; 4+
cmp #2 ; 2
bcs stop_decoding ; blt, assume not negative ; 2/3
keep_decoding:
lda note_a+NOTE_NOTE,X ; store prev note ; 4+
@ -1005,9 +1128,8 @@ keep_decoding:
sta prev_sliding_l ; 4
ldy #0 ; 2
;============
; 26
; 24
note_decode_loop:
lda note_a+NOTE_LEN,X ; re-up length count ; 4+
@ -1057,8 +1179,7 @@ decode_case_0X:
; -1
sta note_a+NOTE_LEN_COUNT,X ; len_count=0; ; 5
lda #1 ; 2
sta decode_done ; 4+
inc decode_done ; 6
dec pt3_pattern_done ; 6
@ -1113,13 +1234,12 @@ decode_case_3X:
bcs decode_case_4X ; branch greater/equal ; 3
; -1
lda note_command ; 3
sec ; 2
sbc #$20 ; 2
adc #$e0 ; 2
sta pt3_noise_period ; 3
jmp done_decode ; 3
;===========
; 17
; 15
decode_case_4X:
;==============================
@ -1145,8 +1265,7 @@ decode_case_5X:
; -1
lda note_command ; 4
sec ; 2
sbc #$50 ; 2
adc #$b0 ; 2
sta note_a+NOTE_NOTE,X ; note=(current_val-0x50); ; 5
jsr reset_note ; 6+69
@ -1155,7 +1274,7 @@ decode_case_5X:
sta note_a+NOTE_ENABLED,X ; enabled=1 ; 5
jmp done_decode ; 3
bne done_decode ; 2
decode_case_bX:
;============================================
@ -1167,7 +1286,7 @@ decode_case_bX:
lda note_command
and #$f
beq decode_case_b0
cmp #1
sbc #1 ; envelope_type=(current_val&0xf)-1;
bne decode_case_bx_higher
decode_case_b1:
@ -1179,23 +1298,20 @@ decode_case_b1:
sta note_a+NOTE_LEN,X
sta note_a+NOTE_LEN_COUNT,X
jmp done_decode
bcs done_decode ; branch always
decode_case_b0:
; Disable envelope
sta note_a+NOTE_ENVELOPE_ENABLED,X
sta note_a+NOTE_ORNAMENT_POSITION,X
jmp done_decode
beq done_decode
decode_case_bx_higher:
sec
sbc #1 ; envelope_type=(current_val&0xf)-1;
jsr set_envelope ; 6+64
jmp done_decode
bcs done_decode ; branch always
decode_case_cX:
;==============================
@ -1215,11 +1331,11 @@ decode_case_c0:
jsr reset_note ; 6+69
jmp done_decode
bne done_decode ; branch always
decode_case_cx_not_c0:
sta note_a+NOTE_VOLUME,X ; volume=current_val&0xf;
jmp done_decode
bne done_decode ; branch always
decode_case_dX:
;==============================
@ -1237,10 +1353,9 @@ decode_case_dX:
;========================
; d0 case means end note
lda #1
sta decode_done
rol decode_done
jmp done_decode
bne done_decode
decode_case_eX:
;==============================
; $EX -- change sample
@ -1257,7 +1372,7 @@ decode_case_dx_not_d0:
jsr load_sample ; load sample in bottom nybble
jmp done_decode
bcc done_decode ; branch always
decode_case_fX:
;==============================
; $FX - change ornament/sample
@ -1452,7 +1567,7 @@ effect_3:
iny
sta note_a+NOTE_SAMPLE_POSITION,X
jmp no_effect
bne no_effect ; branch always
;==============================
; Effect #4 -- Ornament Position
@ -1465,7 +1580,7 @@ effect_4:
iny
sta note_a+NOTE_ORNAMENT_POSITION,X
jmp no_effect
bne no_effect ; branch always
;==============================
; Effect #5 -- Vibrato
@ -1488,7 +1603,7 @@ effect_5:
sta note_a+NOTE_TONE_SLIDING_L,X
sta note_a+NOTE_TONE_SLIDING_H,X
jmp no_effect
beq no_effect ; branch always
;==============================
; Effect #8 -- Envelope Down
@ -1513,7 +1628,7 @@ effect_8:
iny
sta pt3_envelope_slide_add_h
jmp no_effect
bne no_effect ; branch always
;==============================
; Effect #9 -- Set Speed
@ -1601,8 +1716,7 @@ reset_note:
sta note_a+NOTE_TONE_ACCUMULATOR_H,X ; 5
sta note_a+NOTE_ONOFF,X ; onoff=0; ; 5
lda #1 ; 2
sta decode_done ; decode_done=1 ; 4
rol decode_done ; decode_done=1 ; 6
rts ; 6
;============
@ -1611,30 +1725,6 @@ reset_note:
;=====================================
; Decode Line
;=====================================
pt3_decode_line:
; decode_note(&pt3->a,&(pt3->a_addr),pt3);
ldx #(NOTE_STRUCT_SIZE*0)
jsr decode_note
; decode_note(&pt3->b,&(pt3->b_addr),pt3);
ldx #(NOTE_STRUCT_SIZE*1)
jsr decode_note
; decode_note(&pt3->c,&(pt3->c_addr),pt3);
ldx #(NOTE_STRUCT_SIZE*2)
jsr decode_note
; if (pt3->a.all_done && pt3->b.all_done && pt3->c.all_done) {
; return 1;
; }
rts
current_subframe: .byte $0
current_line: .byte $0
current_pattern: .byte $0
@ -1645,6 +1735,11 @@ current_pattern: .byte $0
; FIXME: inline this? we do call it from outside
; in the player note length code
is_done:
; done with song, set it to non-zero
sta DONE_SONG ; 3
rts ; 6
pt3_set_pattern:
; Lookup current pattern in pattern table
@ -1653,13 +1748,10 @@ pt3_set_pattern:
; if value is $FF we are at the end of the song
cmp #$ff ; 2
bne not_done ; 2/3
beq is_done ; 2/3
; done with song, set it to non-zero
sta DONE_SONG ; 3
rts ; 6
;============
; 21 if end
; 22 if end
not_done:
@ -1681,7 +1773,6 @@ not_done:
lda (PATTERN_L),Y ; 5+
sta note_a+NOTE_ADDR_L ; 4
iny ; 2
clc ; needed? ; 2
lda (PATTERN_L),Y ; 5+
adc #>PT3_LOC ; assume page boundary ; 2
sta note_a+NOTE_ADDR_H ; 4
@ -1802,6 +1893,7 @@ do_frame:
; R13 = Envelope Shape, 0xff means don't write
; R14/R15 = I/O (ignored)
lda #0 ; 2
sta pt3_mixer_value ; 4
sta pt3_envelope_add ; 4
@ -1944,13 +2036,12 @@ no_scale_c:
and #$1f ; 2
sta AY_REGISTERS+6 ; 3
lda convert_177 ; 3
ldx convert_177 ; 3
beq no_scale_n ; 2/3
; Convert from 1.77MHz to 1MHz by multiplying by 9/16
; first multiply by 8
lda AY_REGISTERS+6 ; 3
asl ; 2
asl ; 2
asl ; 2
@ -1965,9 +2056,9 @@ no_scale_c:
ror ; 2
ror ; 2
and #$1f ; 2
sta AY_REGISTERS+6 ; 3
no_scale_n:
sta AY_REGISTERS+6 ; 3
;=======================
; Mixer
@ -2217,131 +2308,11 @@ PT3NoteTable_ASM_34_35_low:
;==========================
; VolTableCreator
;==========================
; Creates the appropriate volume table
; based on z80 code by Ivan Roshin ZXAYHOBETA/VTII10bG.asm
;
; Called with carry==0 for 3.3/3.4 table
; Called with carry==1 for 3.5 table
; 177f-1932 = 435 bytes, not that much better than 512 of lookup
z80_h: .byte $0
z80_l: .byte $0
z80_d: .byte $0
z80_e: .byte $0
VolTableCreator:
; Init initial variables
lda #$0
sta z80_h
sta z80_d
sta z80_e
lda #$11
sta z80_l
; Set up self modify
lda #$2A ; ROL for self-modify
bcs vol_type_35
vol_type_33:
; For older table, we set initial conditions a bit
; different
lda #$10
sta z80_l ; l=16
sta z80_e ; e=16
lda #$ea ; NOP for self modify
vol_type_35:
sta vol_smc ; set the self-modify code
ldy #16 ; skip first row, all zeros
ldx #16 ; c=16
vol_outer:
lda z80_h
pha
lda z80_l
pha ; save HL
clc ; add HL,DE
adc z80_e
sta z80_e
lda z80_h
adc z80_d
sta z80_d ; carry is important
; sbc hl,hl
lda #$ff
bcs vol_ffs
vol_zeros:
lda #0
vol_ffs:
vol_write:
sta z80_h
sta z80_l
vol_inner:
lda z80_l
vol_smc:
nop ; nop or ROL depending
lda z80_h
adc #$0 ; a=a+carry;
sta VolumeTable,Y
iny
clc ; add HL,DE
lda z80_l
adc z80_e
sta z80_l
lda z80_h
adc z80_d
sta z80_h
inx ; inc C
txa ; a=c
and #$f
bne vol_inner
pla
sta z80_l
pla
sta z80_h ; restore HL
lda z80_e ; a=e
cmp #$77
bne vol_m3
inc z80_e
bne vol_blah
inc z80_d
vol_blah:
vol_m3:
txa ; a=c
;bne vol_outer
beq vol_done
jmp vol_outer
vol_done:
rts
VolumeTable:
.res 256,0

View File

@ -171,11 +171,11 @@ main_loop:
jsr page_flip
check_done:
lda #$ff
bit DONE_PLAYING
lda DONE_PLAYING
asl ; bit 7 to carry, bit 6 to bit 7
beq main_loop ; if was all zeros, loop
bmi main_loop ; if high bit set, paused
bvs minus_song ; if bit 6 set, then left pressed
bcs main_loop ; if high bit set, paused
bmi minus_song ; if bit 6 set, then left pressed
; else, either song finished or
; right pressed
@ -266,8 +266,8 @@ new_song:
lda #8 ; print filename to screen
sta CH
lda #21
sta CV
;lda #21
;sta CV
lda INL
sta OUTL
@ -326,8 +326,6 @@ upcase:
beq no_uppercase
ldy #$1e
;;lda #>(PT3_LOC+$1E) ; point to header title
sta OUTH
upcase_loop:
lda PT3_LOC,Y
@ -343,6 +341,8 @@ not_lowercase:
no_uppercase:
; print title
lda #>(PT3_LOC+$1E) ; point to header title
sta OUTH
lda #<(PT3_LOC+$1E)
sta OUTL
@ -421,17 +421,15 @@ no_uppercase:
; update the MHz indicator with current state
ldx #'0'+$80
lda convert_177
beq set_1MHz
beq done_MHz
lda #'7'+$80
bne done_MHz ; branch always
ldx #'7'+$80
set_1MHz:
lda #'0'+$80
done_MHz:
sta $7F4
sta $BF4
stx $7F4
stx $BF4
; Print Left Arrow (INVERSE)
lda #'<'
@ -501,10 +499,9 @@ fc_pattern_good:
bne fc_line_good
inc current_pattern ; increment pattern
lda #0
sta current_line
sta current_subframe
beq frame_count_loop ; branch always
bne frame_count_loop ; branch always
fc_line_good:
inc current_subframe ; subframe++
@ -638,8 +635,8 @@ skip_inh_inc:
increment_file:
inc WHICH_FILE
lda WHICH_FILE
cmp #NUM_FILES
eor done_increment
eor #NUM_FILES
bne done_increment
sta WHICH_FILE
done_increment:
rts