mirror of
https://github.com/deater/dos33fsprogs.git
synced 2025-01-13 07:29:54 +00:00
ds: add updated music
This commit is contained in:
Vince Weaver
parent
e335988aa0
commit
0e71b8bccd
@ -29,7 +29,9 @@ DEMOSPLASH: demosplash.o
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demosplash.o: demosplash.s \
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zp.inc hardware.inc \
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appleII_intro.s vapor_lock.s delay_a.s \
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pt3_lib.s mockingboard_a.s pt3_setup.s interrupt_handler.s \
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pt3_lib_init.s pt3_lib_core.s pt3_lib_mockingboard.s \
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interrupt_handler.s \
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starbase.s starbase_action.s \
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dya_space_demo.pt3 appleII_40_96.inc
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ca65 -o demosplash.o demosplash.s -l demosplash.lst
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@ -7,19 +7,23 @@
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ending:
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; jsr appleII_intro
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;=========================
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; set up sound
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;=========================
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lda #0
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sta DONE_PLAYING
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; jsr pt3_setup
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jsr mockingboard_init
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jsr pt3_setup_interrupt
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jsr reset_ay_both
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jsr clear_ay_both
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jsr pt3_init_song
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; lda #1
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; sta LOOP
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; jsr wait_until_keypressed
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;===========================
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; Enable graphics
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@ -40,7 +44,11 @@ ending:
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sta DISP_PAGE
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;===========================
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; apple II intro
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;============================
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; jsr appleII_intro
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;===========================
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; show some pictures
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@ -49,7 +57,7 @@ ending:
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; start music
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; cli ; enable interrupts
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cli ; enable interrupts
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jsr starbase
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@ -89,14 +97,12 @@ wait_until_keypressed:
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; Starbase
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.include "starbase.s"
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.include "pt3_setup.s"
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.include "pt3_lib.s"
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; Music player
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.include "pt3_lib_core.s"
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.include "pt3_lib_init.s"
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.include "pt3_lib_mockingboard.s"
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.include "interrupt_handler.s"
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.include "mockingboard_a.s"
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; backgrounds
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;.include "ootw_graphics/l15final/ootw_c15_final.inc"
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;.include "ootw_graphics/l16end/ootw_c16_end.inc"
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PT3_LOC = song
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@ -18,7 +18,6 @@
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; to be sure status flag and accumulator set properly
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interrupt_handler:
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php ; save status flags
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pha ; save A ; 3
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; A is saved in $45 by firmware
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@ -31,104 +30,8 @@ interrupt_handler:
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; inc $0404 ; debug (flashes char onscreen)
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bit $C404 ; clear 6522 interrupt by reading T1C-L ; 4
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lda DONE_PLAYING ; 3
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beq pt3_play_music ; if song done, don't play music ; 3/2nt
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jmp exit_interrupt ; 3
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;============
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; 13
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pt3_play_music:
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; decode a frame of music
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jsr pt3_make_frame
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; handle song over condition
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lda DONE_SONG
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beq mb_write_frame ; if not done, continue
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lda LOOP ; see if looping
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beq move_to_next
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pt3_loop_smc:
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lda #0 ; looping, move to loop location
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sta current_pattern
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lda #$0
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sta current_line
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sta current_subframe
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sta DONE_SONG ; undo the next song
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beq done_interrupt ; branch always
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move_to_next:
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; same as "press right"
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ldx #$20
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jmp quiet_exit
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;======================================
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; Write frames to Mockingboard
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;======================================
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; for speed could merge this into
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; the decode code
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mb_write_frame:
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tax ; set up reg count ; 2
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;============
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; 2
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;==================================
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; loop through the 14 registers
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; reading the value, then write out
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;==================================
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mb_write_loop:
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lda AY_REGISTERS,X ; load register value ; 4
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; special case R13. If it is 0xff, then don't update
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; otherwise might spuriously reset the envelope settings
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cpx #13 ; 2
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bne mb_not_13 ; 3/2nt
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cmp #$ff ; 2
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beq mb_skip_13 ; 3/2nt
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;============
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; typ 5
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mb_not_13:
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; address
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stx MOCK_6522_ORA1 ; put address on PA1 ; 4
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stx MOCK_6522_ORA2 ; put address on PA2 ; 4
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lda #MOCK_AY_LATCH_ADDR ; latch_address for PB1 ; 2
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sta MOCK_6522_ORB1 ; latch_address on PB1 ; 4
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sta MOCK_6522_ORB2 ; latch_address on PB2 ; 4
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ldy #MOCK_AY_INACTIVE ; go inactive ; 2
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sty MOCK_6522_ORB1 ; 4
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sty MOCK_6522_ORB2 ; 4
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; value
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lda AY_REGISTERS,X ; load register value ; 4
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sta MOCK_6522_ORA1 ; put value on PA1 ; 4
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sta MOCK_6522_ORA2 ; put value on PA2 ; 4
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lda #MOCK_AY_WRITE ; ; 2
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sta MOCK_6522_ORB1 ; write on PB1 ; 4
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sta MOCK_6522_ORB2 ; write on PB2 ; 4
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sty MOCK_6522_ORB1 ; 4
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sty MOCK_6522_ORB2 ; 4
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;===========
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; 60
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mb_no_write:
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inx ; point to next register ; 2
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cpx #14 ; if 14 we're done ; 2
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bmi mb_write_loop ; otherwise, loop ; 3/2nt
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;============
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; 7
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mb_skip_13:
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.include "pt3_lib_irq_handler.s"
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jmp exit_interrupt
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@ -136,16 +39,14 @@ mb_skip_13:
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; Finally done with this interrupt
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;=================================
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done_interrupt:
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quiet_exit:
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stx DONE_PLAYING
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jsr clear_ay_both
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;ldx #$ff ; also mute the channel
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stx AY_REGISTERS+7 ; just in case
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ldx #$ff ; also mute the channel
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stx AY_REGISTERS+7 ; just in case
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done_key:
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exit_interrupt:
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pla
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@ -165,4 +66,3 @@ interrupt_smc:
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; typical
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; ???? cycles
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File diff suppressed because it is too large
Load Diff
575
demosplash/pt3_lib_init.s
Normal file
575
demosplash/pt3_lib_init.s
Normal file
@ -0,0 +1,575 @@
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; pt3_lib_init.s
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; Initialize a song
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; this is done before song starts playing so it is not
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; as performance / timing critical
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;====================================
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; pt3_init_song
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;====================================
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;
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pt3_init_song:
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lda #$0
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sta DONE_SONG ; 3
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ldx #(end_vars-begin_vars)
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zero_song_structs_loop:
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dex
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sta note_a,X
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bne zero_song_structs_loop
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sta pt3_noise_period_smc+1 ; 4
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sta pt3_noise_add_smc+1 ; 4
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sta pt3_envelope_period_l_smc+1 ; 4
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sta pt3_envelope_period_h_smc+1 ; 4
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sta pt3_envelope_slide_l_smc+1 ; 4
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sta pt3_envelope_slide_h_smc+1 ; 4
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sta pt3_envelope_slide_add_l_smc+1 ; 4
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sta pt3_envelope_slide_add_h_smc+1 ; 4
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sta pt3_envelope_add_smc+1 ; 4
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sta pt3_envelope_type_smc+1 ; 4
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sta pt3_envelope_type_old_smc+1 ; 4
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sta pt3_envelope_delay_smc+1 ; 4
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sta pt3_envelope_delay_orig_smc+1 ; 4
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sta PT3_MIXER_VAL ; 3
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sta current_pattern_smc+1 ; 4
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sta current_line_smc+1 ; 4
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sta current_subframe_smc+1 ; 4
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lda #$f ; 2
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sta note_a+NOTE_VOLUME ; 4
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sta note_b+NOTE_VOLUME ; 4
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sta note_c+NOTE_VOLUME ; 4
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; default ornament/sample in A
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; X is zero coming in here
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;ldx #(NOTE_STRUCT_SIZE*0) ; 2
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jsr load_ornament0_sample1 ; 6+93
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; default ornament/sample in B
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ldx #(NOTE_STRUCT_SIZE*1) ; 2
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jsr load_ornament0_sample1 ; 6+93
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; default ornament/sample in C
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ldx #(NOTE_STRUCT_SIZE*2) ; 2
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jsr load_ornament0_sample1 ; 6+93
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;=======================
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; load default speed
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lda PT3_LOC+PT3_SPEED ; 4
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sta pt3_speed_smc+1 ; 4
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;=======================
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; load loop
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lda PT3_LOC+PT3_LOOP ; 4
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sta pt3_loop_smc+1 ; 4
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;========================
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;========================
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; set up note/freq table
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; this saves some space and makes things marginally faster longrun
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;========================
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;========================
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; note (heh) that there are separate tables if version 3.3
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; but we are going to assume we are only going to be playing
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; newer 3.4+ version files so only need the newer tables
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ldx PT3_LOC+PT3_HEADER_FREQUENCY ; 4
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beq use_freq_table_0
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dex
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beq use_freq_table_1
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dex
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beq use_freq_table_2
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; fallthrough (freq table 3)
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use_freq_table_3:
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;=================================================
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; Create Table #3, v4+, "PT3NoteTable_REAL_34_35"
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;=================================================
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ldy #11 ; !2
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freq_table_3_copy_loop:
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; note, high lookup almost same as 2v4, just need to adjust one value
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lda base2_v4_high,Y ; !3
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sta NoteTable_high,Y ; !3
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lda base3_low,Y ; !3
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sta NoteTable_low,Y ; !3
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dey ; !1
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bpl freq_table_3_copy_loop ; !2
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dec NoteTable_high ; adjust to right value
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jsr NoteTablePropogate ; !3
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lda #<table3_v4_adjust
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sta note_table_adjust_smc+1
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lda #>table3_v4_adjust
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sta note_table_adjust_smc+2
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jsr NoteTableAdjust
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jmp done_set_freq_table
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use_freq_table_2:
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;=================================================
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; Create Table #2, v4+, "PT3NoteTable_ASM_34_35"
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;=================================================
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ldy #11
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freq_table_2_copy_loop:
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lda base2_v4_high,Y
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sta NoteTable_high,Y
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lda base2_v4_low,Y
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sta NoteTable_low,Y
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dey
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bpl freq_table_2_copy_loop
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jsr NoteTablePropogate ; !3
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lda #<table2_v4_adjust
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sta note_table_adjust_smc+1
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lda #>table2_v4_adjust
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sta note_table_adjust_smc+2
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jsr NoteTableAdjust
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jmp done_set_freq_table
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use_freq_table_1:
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;=================================================
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; Create Table #1, "PT3NoteTable_ST"
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;=================================================
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ldy #11
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freq_table_1_copy_loop:
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lda base1_high,Y
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sta NoteTable_high,Y
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lda base1_low,Y
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sta NoteTable_low,Y
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dey
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bpl freq_table_1_copy_loop
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jsr NoteTablePropogate ; !3
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; last adjustments
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lda #$FD ; Tone[23]=$3FD
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sta NoteTable_low+23
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dec NoteTable_low+46 ; Tone[46]-=1;
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jmp done_set_freq_table
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use_freq_table_0:
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;=================================================
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; Create Table #0, "PT3NoteTable_PT_34_35"
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;=================================================
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ldy #11
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freq_table_0_copy_loop:
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lda base0_v4_high,Y
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sta NoteTable_high,Y
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lda base0_v4_low,Y
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sta NoteTable_low,Y
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dey
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bpl freq_table_0_copy_loop
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jsr NoteTablePropogate ; !3
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lda #<table0_v4_adjust
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sta note_table_adjust_smc+1
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lda #>table0_v4_adjust
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sta note_table_adjust_smc+2
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jsr NoteTableAdjust
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done_set_freq_table:
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;======================
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; calculate version
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ldx #6 ; 2
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lda PT3_LOC+PT3_VERSION ; 4
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sec ; 2
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sbc #'0' ; 2
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cmp #9 ; 2
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bcs not_ascii_number ; bge ; 2/3
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tax ; 2
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not_ascii_number:
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; adjust version<6 SMC code in the slide code
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; FIXME: I am sure there's a more clever way to do this
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lda #$2C ; BIT ; 2
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cpx #$6 ; 2
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bcs version_greater_than_or_equal_6 ; bgt ; 3
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; less than 6, jump
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; also carry is known to be clear
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adc #$20 ; BIT->JMP 2C->4C ; 2
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version_greater_than_or_equal_6:
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sta version_smc ; 4
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pick_volume_table:
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;=======================
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; Pick which volume number, based on version
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; if (PlParams.PT3.PT3_Version <= 4)
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cpx #5 ; 2
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; carry clear = 3.3/3.4 table
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; carry set = 3.5 table
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;==========================
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; VolTableCreator
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;==========================
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; Creates the appropriate volume table
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; based on z80 code by Ivan Roshin ZXAYHOBETA/VTII10bG.asm
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;
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; Called with carry==0 for 3.3/3.4 table
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; Called with carry==1 for 3.5 table
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; 177f-1932 = 435 bytes, not that much better than 512 of lookup
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VolTableCreator:
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; Init initial variables
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lda #$0
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sta z80_d_smc+1
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ldy #$11
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; Set up self modify
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ldx #$2A ; ROL for self-modify
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bcs vol_type_35
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vol_type_33:
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; For older table, we set initial conditions a bit
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; different
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dey
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tya
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ldx #$ea ; NOP for self modify
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vol_type_35:
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sty z80_l_smc+1 ; l=16 or 17
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sta z80_e_smc+1 ; e=16 or 0
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stx vol_smc ; set the self-modify code
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ldy #16 ; skip first row, all zeros
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ldx #16 ; c=16
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vol_outer:
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clc ; add HL,DE
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z80_l_smc:
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lda #$d1
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z80_e_smc:
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adc #$d1
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sta z80_e_smc+1
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lda #0
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z80_d_smc:
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adc #$d1
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sta z80_d_smc+1 ; carry is important
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; sbc hl,hl
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lda #0
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adc #$ff
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eor #$ff
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vol_write:
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sta z80_h_smc+1
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pha
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vol_inner:
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pla
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pha
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vol_smc:
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nop ; nop or ROL depending
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z80_h_smc:
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lda #$d1
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adc #$0 ; a=a+carry;
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sta VolumeTable,Y
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iny
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pla ; add HL,DE
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adc z80_e_smc+1
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pha
|
||||
lda z80_h_smc+1
|
||||
adc z80_d_smc+1
|
||||
sta z80_h_smc+1
|
||||
|
||||
inx ; inc C
|
||||
txa ; a=c
|
||||
and #$f
|
||||
bne vol_inner
|
||||
|
||||
|
||||
pla
|
||||
|
||||
lda z80_e_smc+1 ; a=e
|
||||
cmp #$77
|
||||
bne vol_m3
|
||||
|
||||
inc z80_e_smc+1
|
||||
|
||||
vol_m3:
|
||||
txa ; a=c
|
||||
bne vol_outer
|
||||
|
||||
vol_done:
|
||||
rts
|
||||
|
||||
|
||||
;=========================================
|
||||
; copy note table seed to proper location
|
||||
;=========================================
|
||||
|
||||
; faster inlined
|
||||
|
||||
;NoteTableCopy:
|
||||
|
||||
; ldy #11 ; !2
|
||||
;note_table_copy_loop:
|
||||
;ntc_smc1:
|
||||
; lda base1_high,Y ; !3
|
||||
; sta NoteTable_high,Y ; !3
|
||||
;ntc_smc2:
|
||||
; lda base1_low,Y ; !3
|
||||
; sta NoteTable_low,Y ; !3
|
||||
; dey ; !1
|
||||
; bpl note_table_copy_loop ; !2
|
||||
; rts ; !1
|
||||
|
||||
|
||||
;==========================================
|
||||
; propogate the freq down, dividing by two
|
||||
;==========================================
|
||||
NoteTablePropogate:
|
||||
|
||||
ldy #0
|
||||
note_table_propogate_loop:
|
||||
clc
|
||||
lda NoteTable_high,Y
|
||||
ror
|
||||
sta NoteTable_high+12,Y
|
||||
|
||||
lda NoteTable_low,Y
|
||||
ror
|
||||
sta NoteTable_low+12,Y
|
||||
|
||||
iny
|
||||
cpy #84
|
||||
bne note_table_propogate_loop
|
||||
|
||||
rts
|
||||
|
||||
|
||||
;================================================
|
||||
; propogation isn't enough, various values
|
||||
; are ofte off by one, so adjust using a bitmask
|
||||
;================================================
|
||||
NoteTableAdjust:
|
||||
|
||||
ldx #0
|
||||
note_table_adjust_outer:
|
||||
|
||||
note_table_adjust_smc:
|
||||
lda table0_v4_adjust,X
|
||||
sta PT3_TEMP
|
||||
|
||||
; reset smc
|
||||
lda #<NoteTable_low
|
||||
sta ntl_smc+1
|
||||
lda #>NoteTable_low
|
||||
sta ntl_smc+2
|
||||
|
||||
|
||||
ldy #7
|
||||
note_table_adjust_inner:
|
||||
ror PT3_TEMP
|
||||
bcc note_table_skip_adjust
|
||||
|
||||
ntl_smc:
|
||||
inc NoteTable_low,X
|
||||
|
||||
note_table_skip_adjust:
|
||||
clc
|
||||
lda #12
|
||||
adc ntl_smc+1
|
||||
sta ntl_smc+1
|
||||
lda #0
|
||||
adc ntl_smc+2 ; unnecessary if aligned
|
||||
sta ntl_smc+2
|
||||
|
||||
skip_adjust_done:
|
||||
dey
|
||||
bpl note_table_adjust_inner
|
||||
|
||||
inx
|
||||
cpx #12
|
||||
bne note_table_adjust_outer
|
||||
|
||||
rts
|
||||
|
||||
|
||||
;base0_v3_high:
|
||||
;.byte $0C,$0B,$0A,$0A,$09,$09,$08,$08,$07,$07,$06,$06
|
||||
;base0_v3_low:
|
||||
;.byte $21,$73,$CE,$33,$A0,$16,$93,$18,$A4,$36,$CE,$6D
|
||||
|
||||
; note: same as base0_v3_high
|
||||
base0_v4_high:
|
||||
.byte $0C,$0B,$0A,$0A,$09,$09,$08,$08,$07,$07,$06,$06
|
||||
base0_v4_low:
|
||||
.byte $22,$73,$CF,$33,$A1,$17,$94,$19,$A4,$37,$CF,$6D
|
||||
|
||||
base1_high:
|
||||
.byte $0E,$0E,$0D,$0C,$0B,$0B,$0A,$09,$09,$08,$08,$07
|
||||
base1_low:
|
||||
.byte $F8,$10,$60,$80,$D8,$28,$88,$F0,$60,$E0,$58,$E0
|
||||
|
||||
;base2_v3_high:
|
||||
;.byte $0D,$0C,$0B,$0B,$0A,$09,$09,$08,$08,$07,$07,$07
|
||||
;base2_v3_low:
|
||||
;.byte $3E,$80,$CC,$22,$82,$EC,$5C,$D6,$58,$E0,$6E,$04
|
||||
|
||||
; note almost same as above
|
||||
base2_v4_high:
|
||||
.byte $0D,$0C,$0B,$0A,$0A,$09,$09,$08,$08,$07,$07,$06
|
||||
base2_v4_low:
|
||||
.byte $10,$55,$A4,$FC,$5F,$CA,$3D,$B8,$3B,$C5,$55,$EC
|
||||
|
||||
; note almost same as above
|
||||
;base3_high:
|
||||
;.byte $0C,$0C,$0B,$0A,$0A,$09,$09,$08,$08,$07,$07,$06
|
||||
base3_low:
|
||||
.byte $DA,$22,$73,$CF,$33,$A1,$17,$94,$19,$A4,$37,$CF
|
||||
|
||||
|
||||
; Adjustment factors
|
||||
table0_v4_adjust:
|
||||
.byte $40,$e6,$9c,$66,$40,$2c,$20,$30,$48,$6c,$1c,$5a
|
||||
|
||||
table2_v4_adjust:
|
||||
.byte $20,$a8,$40,$f8,$bc,$90,$78,$70,$74,$08,$2a,$50
|
||||
|
||||
table3_v4_adjust:
|
||||
.byte $B4,$40,$e6,$9c,$66,$40,$2c,$20,$30,$48,$6c,$1c
|
||||
|
||||
|
||||
; Table #1 of Pro Tracker 3.3x - 3.5x
|
||||
;PT3NoteTable_ST_high:
|
||||
;.byte $0E,$0E,$0D,$0C,$0B,$0B,$0A,$09
|
||||
;.byte $09,$08,$08,$07,$07,$07,$06,$06
|
||||
;.byte $05,$05,$05,$04,$04,$04,$04,$03
|
||||
;.byte $03,$03,$03,$03,$02,$02,$02,$02
|
||||
;.byte $02,$02,$02,$01,$01,$01,$01,$01
|
||||
;.byte $01,$01,$01,$01,$01,$01,$01,$00
|
||||
;.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
;.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
;.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
;.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
;.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
;.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
|
||||
;PT3NoteTable_ST_low:
|
||||
;.byte $F8,$10,$60,$80,$D8,$28,$88,$F0
|
||||
;.byte $60,$E0,$58,$E0,$7C,$08,$B0,$40
|
||||
;.byte $EC,$94,$44,$F8,$B0,$70,$2C,$FD
|
||||
;.byte $BE,$84,$58,$20,$F6,$CA,$A2,$7C
|
||||
;.byte $58,$38,$16,$F8,$DF,$C2,$AC,$90
|
||||
;.byte $7B,$65,$51,$3E,$2C,$1C,$0A,$FC
|
||||
;.byte $EF,$E1,$D6,$C8,$BD,$B2,$A8,$9F
|
||||
;.byte $96,$8E,$85,$7E,$77,$70,$6B,$64
|
||||
;.byte $5E,$59,$54,$4F,$4B,$47,$42,$3F
|
||||
;.byte $3B,$38,$35,$32,$2F,$2C,$2A,$27
|
||||
;.byte $25,$23,$21,$1F,$1D,$1C,$1A,$19
|
||||
;.byte $17,$16,$15,$13,$12,$11,$10,$0F
|
||||
|
||||
|
||||
; Table #2 of Pro Tracker 3.4x - 3.5x
|
||||
;PT3NoteTable_ASM_34_35_high:
|
||||
;.byte $0D,$0C,$0B,$0A,$0A,$09,$09,$08
|
||||
;.byte $08,$07,$07,$06,$06,$06,$05,$05
|
||||
;.byte $05,$04,$04,$04,$04,$03,$03,$03
|
||||
;.byte $03,$03,$02,$02,$02,$02,$02,$02
|
||||
;.byte $02,$01,$01,$01,$01,$01,$01,$01
|
||||
;.byte $01,$01,$01,$01,$01,$00,$00,$00
|
||||
;.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
;.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
;.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
;.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
;.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
;.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
|
||||
;PT3NoteTable_ASM_34_35_low:
|
||||
;.byte $10,$55,$A4,$FC,$5F,$CA,$3D,$B8
|
||||
;.byte $3B,$C5,$55,$EC,$88,$2A,$D2,$7E
|
||||
;.byte $2F,$E5,$9E,$5C,$1D,$E2,$AB,$76
|
||||
;.byte $44,$15,$E9,$BF,$98,$72,$4F,$2E
|
||||
;.byte $0F,$F1,$D5,$BB,$A2,$8B,$74,$60
|
||||
;.byte $4C,$39,$28,$17,$07,$F9,$EB,$DD
|
||||
;.byte $D1,$C5,$BA,$B0,$A6,$9D,$94,$8C
|
||||
;.byte $84,$7C,$75,$6F,$69,$63,$5D,$58
|
||||
;.byte $53,$4E,$4A,$46,$42,$3E,$3B,$37
|
||||
;.byte $34,$31,$2F,$2C,$29,$27,$25,$23
|
||||
;.byte $21,$1F,$1D,$1C,$1A,$19,$17,$16
|
||||
;.byte $15,$14,$12,$11,$10,$0F,$0E,$0D
|
||||
|
||||
|
||||
;PT3VolumeTable_33_34:
|
||||
;.byte $0,$0,$0,$0,$0,$0,$0,$0,$0,$0,$0,$0,$0,$0,$0,$0
|
||||
;.byte $0,$0,$0,$0,$0,$0,$0,$0,$1,$1,$1,$1,$1,$1,$1,$1
|
||||
;.byte $0,$0,$0,$0,$0,$0,$1,$1,$1,$1,$1,$2,$2,$2,$2,$2
|
||||
;.byte $0,$0,$0,$0,$1,$1,$1,$1,$2,$2,$2,$2,$3,$3,$3,$3
|
||||
;.byte $0,$0,$0,$0,$1,$1,$1,$2,$2,$2,$3,$3,$3,$4,$4,$4
|
||||
;.byte $0,$0,$0,$1,$1,$1,$2,$2,$3,$3,$3,$4,$4,$4,$5,$5
|
||||
;.byte $0,$0,$0,$1,$1,$2,$2,$3,$3,$3,$4,$4,$5,$5,$6,$6
|
||||
;.byte $0,$0,$1,$1,$2,$2,$3,$3,$4,$4,$5,$5,$6,$6,$7,$7
|
||||
;.byte $0,$0,$1,$1,$2,$2,$3,$3,$4,$5,$5,$6,$6,$7,$7,$8
|
||||
;.byte $0,$0,$1,$1,$2,$3,$3,$4,$5,$5,$6,$6,$7,$8,$8,$9
|
||||
;.byte $0,$0,$1,$2,$2,$3,$4,$4,$5,$6,$6,$7,$8,$8,$9,$A
|
||||
;.byte $0,$0,$1,$2,$3,$3,$4,$5,$6,$6,$7,$8,$9,$9,$A,$B
|
||||
;.byte $0,$0,$1,$2,$3,$4,$4,$5,$6,$7,$8,$8,$9,$A,$B,$C
|
||||
;.byte $0,$0,$1,$2,$3,$4,$5,$6,$7,$7,$8,$9,$A,$B,$C,$D
|
||||
;.byte $0,$0,$1,$2,$3,$4,$5,$6,$7,$8,$9,$A,$B,$C,$D,$E
|
||||
;.byte $0,$1,$2,$3,$4,$5,$6,$7,$8,$9,$A,$B,$C,$D,$E,$F
|
||||
|
||||
;PT3VolumeTable_35:
|
||||
;.byte $0,$0,$0,$0,$0,$0,$0,$0,$0,$0,$0,$0,$0,$0,$0,$0
|
||||
;.byte $0,$0,$0,$0,$0,$0,$0,$0,$1,$1,$1,$1,$1,$1,$1,$1
|
||||
;.byte $0,$0,$0,$0,$1,$1,$1,$1,$1,$1,$1,$1,$2,$2,$2,$2
|
||||
;.byte $0,$0,$0,$1,$1,$1,$1,$1,$2,$2,$2,$2,$2,$3,$3,$3
|
||||
;.byte $0,$0,$1,$1,$1,$1,$2,$2,$2,$2,$3,$3,$3,$3,$4,$4
|
||||
;.byte $0,$0,$1,$1,$1,$2,$2,$2,$3,$3,$3,$4,$4,$4,$5,$5
|
||||
;.byte $0,$0,$1,$1,$2,$2,$2,$3,$3,$4,$4,$4,$5,$5,$6,$6
|
||||
;.byte $0,$0,$1,$1,$2,$2,$3,$3,$4,$4,$5,$5,$6,$6,$7,$7
|
||||
;.byte $0,$1,$1,$2,$2,$3,$3,$4,$4,$5,$5,$6,$6,$7,$7,$8
|
||||
;.byte $0,$1,$1,$2,$2,$3,$4,$4,$5,$5,$6,$7,$7,$8,$8,$9
|
||||
;.byte $0,$1,$1,$2,$3,$3,$4,$5,$5,$6,$7,$7,$8,$9,$9,$A
|
||||
;.byte $0,$1,$1,$2,$3,$4,$4,$5,$6,$7,$7,$8,$9,$A,$A,$B
|
||||
;.byte $0,$1,$2,$2,$3,$4,$5,$6,$6,$7,$8,$9,$A,$A,$B,$C
|
||||
;.byte $0,$1,$2,$3,$3,$4,$5,$6,$7,$8,$9,$A,$A,$B,$C,$D
|
||||
;.byte $0,$1,$2,$3,$4,$5,$6,$7,$7,$8,$9,$A,$B,$C,$D,$E
|
||||
;.byte $0,$1,$2,$3,$4,$5,$6,$7,$8,$9,$A,$B,$C,$D,$E,$F
|
||||
109
demosplash/pt3_lib_irq_handler.s
Normal file
109
demosplash/pt3_lib_irq_handler.s
Normal file
@ -0,0 +1,109 @@
|
||||
|
||||
|
||||
pt3_irq_handler:
|
||||
|
||||
bit $C404 ; clear 6522 interrupt by reading T1C-L ; 4
|
||||
|
||||
lda DONE_PLAYING ; 3
|
||||
beq pt3_play_music ; if song done, don't play music ; 3/2nt
|
||||
jmp done_pt3_irq_handler ; 3
|
||||
;============
|
||||
; 13
|
||||
|
||||
pt3_play_music:
|
||||
|
||||
; decode a frame of music
|
||||
|
||||
jsr pt3_make_frame
|
||||
|
||||
; handle song over condition
|
||||
lda DONE_SONG
|
||||
beq mb_write_frame ; if not done, continue
|
||||
|
||||
lda LOOP ; see if looping
|
||||
beq move_to_next
|
||||
|
||||
pt3_loop_smc:
|
||||
lda #$d1 ; looping, move to loop location
|
||||
; non-zero to avoid the temptation
|
||||
; to merge with following lda #$0
|
||||
sta current_pattern_smc+1
|
||||
lda #$0
|
||||
sta current_line_smc+1
|
||||
sta current_subframe_smc+1
|
||||
sta DONE_SONG ; undo the next song
|
||||
|
||||
beq done_pt3_irq_handler ; branch always
|
||||
|
||||
move_to_next:
|
||||
; same as "press right"
|
||||
ldx #$20
|
||||
jmp quiet_exit
|
||||
|
||||
;======================================
|
||||
; Write frames to Mockingboard
|
||||
;======================================
|
||||
; for speed could merge this into
|
||||
; the decode code
|
||||
|
||||
mb_write_frame:
|
||||
|
||||
|
||||
tax ; set up reg count ; 2
|
||||
;============
|
||||
; 2
|
||||
|
||||
;==================================
|
||||
; loop through the 14 registers
|
||||
; reading the value, then write out
|
||||
;==================================
|
||||
|
||||
mb_write_loop:
|
||||
lda AY_REGISTERS,X ; load register value ; 4
|
||||
|
||||
; special case R13. If it is 0xff, then don't update
|
||||
; otherwise might spuriously reset the envelope settings
|
||||
|
||||
cpx #13 ; 2
|
||||
bne mb_not_13 ; 3/2nt
|
||||
cmp #$ff ; 2
|
||||
beq mb_skip_13 ; 3/2nt
|
||||
;============
|
||||
; typ 5
|
||||
mb_not_13:
|
||||
|
||||
|
||||
; address
|
||||
stx MOCK_6522_ORA1 ; put address on PA1 ; 4
|
||||
stx MOCK_6522_ORA2 ; put address on PA2 ; 4
|
||||
ldy #MOCK_AY_LATCH_ADDR ; latch_address for PB1 ; 2
|
||||
sty MOCK_6522_ORB1 ; latch_address on PB1 ; 4
|
||||
sty MOCK_6522_ORB2 ; latch_address on PB2 ; 4
|
||||
ldy #MOCK_AY_INACTIVE ; go inactive ; 2
|
||||
sty MOCK_6522_ORB1 ; 4
|
||||
sty MOCK_6522_ORB2 ; 4
|
||||
|
||||
; value
|
||||
sta MOCK_6522_ORA1 ; put value on PA1 ; 4
|
||||
sta MOCK_6522_ORA2 ; put value on PA2 ; 4
|
||||
lda #MOCK_AY_WRITE ; ; 2
|
||||
sta MOCK_6522_ORB1 ; write on PB1 ; 4
|
||||
sta MOCK_6522_ORB2 ; write on PB2 ; 4
|
||||
sty MOCK_6522_ORB1 ; 4
|
||||
sty MOCK_6522_ORB2 ; 4
|
||||
;===========
|
||||
; 56
|
||||
mb_no_write:
|
||||
inx ; point to next register ; 2
|
||||
cpx #14 ; if 14 we're done ; 2
|
||||
bmi mb_write_loop ; otherwise, loop ; 3/2nt
|
||||
;============
|
||||
; 7
|
||||
mb_skip_13:
|
||||
|
||||
|
||||
;=================================
|
||||
; Finally done with this interrupt
|
||||
;=================================
|
||||
|
||||
done_pt3_irq_handler:
|
||||
@ -144,11 +144,11 @@ mb_detect_loop: ; self-modifying
|
||||
mb_check_cycle_loop:
|
||||
lda (MB_ADDRL),Y ; timer 6522 (Low Order Counter)
|
||||
; count down
|
||||
sta TEMP ; 3 cycles
|
||||
sta PT3_TEMP ; 3 cycles
|
||||
lda (MB_ADDRL),Y ; + 5 cycles = 8 cycles
|
||||
; between the two accesses to the timer
|
||||
sec
|
||||
sbc TEMP ; subtract to see if we had 8 cycles
|
||||
sbc PT3_TEMP ; subtract to see if we had 8 cycles
|
||||
cmp #$f8 ; -8
|
||||
bne mb_not_in_this_slot
|
||||
dex ; decrement, try one more time
|
||||
@ -222,11 +222,11 @@ mb4_detect_loop: ; self-modifying
|
||||
mb4_check_cycle_loop:
|
||||
lda (MB_ADDRL),Y ; timer 6522 (Low Order Counter)
|
||||
; count down
|
||||
sta TEMP ; 3 cycles
|
||||
sta PT3_TEMP ; 3 cycles
|
||||
lda (MB_ADDRL),Y ; + 5 cycles = 8 cycles
|
||||
; between the two accesses to the timer
|
||||
sec
|
||||
sbc TEMP ; subtract to see if we had 8 cycles
|
||||
sbc PT3_TEMP ; subtract to see if we had 8 cycles
|
||||
cmp #$f8 ; -8
|
||||
bne mb4_not_in_this_slot
|
||||
dex ; decrement, try one more time
|
||||
@ -239,3 +239,144 @@ mb4_not_in_this_slot:
|
||||
ldx #00
|
||||
beq done_mb4_detect
|
||||
|
||||
|
||||
;=============================
|
||||
; Setup
|
||||
;=============================
|
||||
pt3_setup_interrupt:
|
||||
|
||||
;===========================
|
||||
; Check for Apple IIc
|
||||
;===========================
|
||||
; it does interrupts differently
|
||||
|
||||
lda $FBB3 ; IIe and newer is $06
|
||||
cmp #6
|
||||
beq apple_iie_or_newer
|
||||
|
||||
jmp done_apple_detect
|
||||
apple_iie_or_newer:
|
||||
lda $FBC0 ; 0 on a IIc
|
||||
bne done_apple_detect
|
||||
apple_iic:
|
||||
; activate IIc mockingboard?
|
||||
; this might only be necessary to allow detection
|
||||
; I get the impression the Mockingboard 4c activates
|
||||
; when you access any of the 6522 ports in Slot 4
|
||||
lda #$ff
|
||||
sta $C403
|
||||
sta $C404
|
||||
|
||||
; bypass the firmware interrupt handler
|
||||
; should we do this on IIe too? probably faster
|
||||
|
||||
sei ; disable interrupts
|
||||
lda $c08b ; disable ROM (enable language card)
|
||||
lda $c08b
|
||||
lda #<interrupt_handler
|
||||
sta $fffe
|
||||
lda #>interrupt_handler
|
||||
sta $ffff
|
||||
|
||||
lda #$EA ; nop out the "lda $45" in the irq hand
|
||||
sta interrupt_smc
|
||||
sta interrupt_smc+1
|
||||
|
||||
done_apple_detect:
|
||||
|
||||
|
||||
;=========================
|
||||
; Setup Interrupt Handler
|
||||
;=========================
|
||||
; Vector address goes to 0x3fe/0x3ff
|
||||
; FIXME: should chain any existing handler
|
||||
|
||||
lda #<interrupt_handler
|
||||
sta $03fe
|
||||
lda #>interrupt_handler
|
||||
sta $03ff
|
||||
|
||||
;============================
|
||||
; Enable 50Hz clock on 6522
|
||||
;============================
|
||||
|
||||
sei ; disable interrupts just in case
|
||||
|
||||
lda #$40 ; Continuous interrupts, don't touch PB7
|
||||
sta $C40B ; ACR register
|
||||
lda #$7F ; clear all interrupt flags
|
||||
sta $C40E ; IER register (interrupt enable)
|
||||
|
||||
lda #$C0
|
||||
sta $C40D ; IFR: 1100, enable interrupt on timer one oflow
|
||||
sta $C40E ; IER: 1100, enable timer one interrupt
|
||||
|
||||
lda #$E7
|
||||
sta $C404 ; write into low-order latch
|
||||
lda #$4f
|
||||
sta $C405 ; write into high-order latch,
|
||||
; load both values into counter
|
||||
; clear interrupt and start counting
|
||||
|
||||
; 4fe7 / 1e6 = .020s, 50Hz
|
||||
|
||||
rts
|
||||
|
||||
|
||||
|
||||
;==================================
|
||||
; Print mockingboard detect message
|
||||
;==================================
|
||||
; note: on IIc must do this before enabling interrupt
|
||||
; as we disable ROM (COUT won't work?)
|
||||
|
||||
print_mockingboard_detect:
|
||||
|
||||
; print detection message
|
||||
; ldy #0
|
||||
;print_mocking_message:
|
||||
; lda mocking_message,Y ; load loading message
|
||||
; beq done_mocking_message
|
||||
; ora #$80
|
||||
; jsr COUT
|
||||
; iny
|
||||
; jmp print_mocking_message
|
||||
;done_mocking_message:
|
||||
; jsr CROUT1
|
||||
|
||||
rts
|
||||
|
||||
print_mocking_notfound:
|
||||
|
||||
; ldy #0
|
||||
;print_not_message:
|
||||
; lda not_message,Y ; load loading message
|
||||
; beq print_not_message_done
|
||||
; ora #$80
|
||||
; jsr COUT
|
||||
; iny
|
||||
; jmp print_not_message
|
||||
;print_not_message_done:
|
||||
rts
|
||||
|
||||
print_mocking_found:
|
||||
; ldy #0
|
||||
;print_found_message:
|
||||
; lda found_message,Y ; load loading message
|
||||
; beq done_found_message
|
||||
; ora #$80
|
||||
; jsr COUT
|
||||
; iny
|
||||
; jmp print_found_message
|
||||
done_found_message:
|
||||
|
||||
rts
|
||||
|
||||
;=========
|
||||
; strings
|
||||
;=========
|
||||
;mocking_message: .asciiz "LOOKING FOR MOCKINGBOARD IN SLOT #4"
|
||||
;not_message: .byte "NOT "
|
||||
;found_message: .asciiz "FOUND"
|
||||
|
||||
|
||||
@ -1,168 +0,0 @@
|
||||
|
||||
;=============================
|
||||
; Setup
|
||||
;=============================
|
||||
pt3_setup:
|
||||
|
||||
;===========================
|
||||
; Check for Apple II/II+/IIc
|
||||
;===========================
|
||||
; this is used to see if we have lowecase support
|
||||
|
||||
lda $FBB3 ; IIe and newer is $06
|
||||
cmp #6
|
||||
beq apple_iie_or_newer
|
||||
|
||||
lda #1 ; set if older than a IIe
|
||||
sta apple_ii
|
||||
jmp done_apple_detect
|
||||
apple_iie_or_newer:
|
||||
lda $FBC0 ; 0 on a IIc
|
||||
bne done_apple_detect
|
||||
apple_iic:
|
||||
; activate IIc mockingboard?
|
||||
; this might only be necessary to allow detection
|
||||
; I get the impression the Mockingboard 4c activates
|
||||
; when you access any of the 6522 ports in Slot 4
|
||||
lda #$ff
|
||||
sta $C403
|
||||
sta $C404
|
||||
|
||||
; bypass the firmware interrupt handler
|
||||
; should we do this on IIe too? probably faster
|
||||
|
||||
sei ; disable interrupts
|
||||
lda $c08b ; disable ROM (enable language card)
|
||||
lda $c08b
|
||||
lda #<interrupt_handler
|
||||
sta $fffe
|
||||
lda #>interrupt_handler
|
||||
sta $ffff
|
||||
|
||||
lda #$EA ; nop out the "lda $45" in the irq hand
|
||||
sta interrupt_smc
|
||||
sta interrupt_smc+1
|
||||
|
||||
done_apple_detect:
|
||||
|
||||
;===============
|
||||
; init variables
|
||||
;===============
|
||||
|
||||
lda #0
|
||||
sta DONE_PLAYING
|
||||
sta LOOP
|
||||
|
||||
;=======================
|
||||
; Detect mockingboard
|
||||
;========================
|
||||
|
||||
; Note, we do this, but then ignore it, as sometimes
|
||||
; the test fails and then you don't get music.
|
||||
; In theory this could do bad things if you had something
|
||||
; easily confused in slot4, but that's probably not an issue.
|
||||
|
||||
; print detection message
|
||||
|
||||
; lda #<mocking_message ; load loading message
|
||||
; sta OUTL
|
||||
; lda #>mocking_message
|
||||
; sta OUTH
|
||||
; jsr move_and_print ; print it
|
||||
|
||||
jsr mockingboard_detect_slot4 ; call detection routine
|
||||
cpx #$1
|
||||
beq mockingboard_found
|
||||
|
||||
; lda #<not_message ; if not found, print that
|
||||
; sta OUTL
|
||||
; lda #>not_message
|
||||
; sta OUTH
|
||||
; inc CV
|
||||
; jsr move_and_print
|
||||
|
||||
; jmp forever_loop ; and wait forever
|
||||
|
||||
mockingboard_found:
|
||||
; lda #<found_message ; print found message
|
||||
; sta OUTL
|
||||
; lda #>found_message
|
||||
; sta OUTH
|
||||
; inc CV
|
||||
; jsr move_and_print
|
||||
|
||||
;============================
|
||||
; Init the Mockingboard
|
||||
;============================
|
||||
|
||||
jsr mockingboard_init
|
||||
jsr reset_ay_both
|
||||
jsr clear_ay_both
|
||||
|
||||
;=========================
|
||||
; Setup Interrupt Handler
|
||||
;=========================
|
||||
; Vector address goes to 0x3fe/0x3ff
|
||||
; FIXME: should chain any existing handler
|
||||
|
||||
lda #<interrupt_handler
|
||||
sta $03fe
|
||||
lda #>interrupt_handler
|
||||
sta $03ff
|
||||
|
||||
;============================
|
||||
; Enable 60Hz clock on 6522
|
||||
;============================
|
||||
|
||||
sei ; disable interrupts just in case
|
||||
|
||||
lda #$40 ; Continuous interrupts, don't touch PB7
|
||||
sta $C40B ; ACR register
|
||||
lda #$7F ; clear all interrupt flags
|
||||
sta $C40E ; IER register (interrupt enable)
|
||||
|
||||
lda #$C0
|
||||
sta $C40D ; IFR: 1100, enable interrupt on timer one oflow
|
||||
sta $C40E ; IER: 1100, enable timer one interrupt
|
||||
|
||||
lda #$1b
|
||||
sta $C404 ; write into low-order latch
|
||||
lda #$41
|
||||
sta $C405 ; write into high-order latch,
|
||||
; load both values into counter
|
||||
; clear interrupt and start counting
|
||||
|
||||
; 4fe7 / 1e6 = .020s, 50Hz
|
||||
; 411b / 1e6 = .0166s, 60Hz
|
||||
|
||||
;==================
|
||||
; init song
|
||||
;==================
|
||||
|
||||
jsr pt3_init_song
|
||||
|
||||
rts
|
||||
|
||||
;========================================
|
||||
;========================================
|
||||
|
||||
; Helper routines below
|
||||
|
||||
;========================================
|
||||
;========================================
|
||||
|
||||
;=========
|
||||
; vars
|
||||
;=========
|
||||
|
||||
time_frame: .byte $0
|
||||
apple_ii: .byte $0
|
||||
|
||||
;=========
|
||||
; strings
|
||||
;=========
|
||||
;mocking_message: .asciiz "LOOKING FOR MOCKINGBOARD IN SLOT #4"
|
||||
not_message: .byte "NOT "
|
||||
found_message: .asciiz "FOUND"
|
||||
;done_message: .asciiz "DONE PLAYING"
|
||||
|
||||
@ -31,17 +31,16 @@ COLOR = $30
|
||||
SEEDL = $4e
|
||||
SEEDH = $4f
|
||||
XMAX = $50
|
||||
|
||||
BEAST_X = $51 ; L1
|
||||
BEAST_Y = $52 ; L1
|
||||
BEAST_GAIT = $53 ; L1
|
||||
BEAST_COUNT = $54 ; L1
|
||||
BEAST_STATE = $55
|
||||
B_STANDING = $00
|
||||
B_RUNNING = $01
|
||||
B_FALLING = $02
|
||||
B_DEAD = $03
|
||||
BEAST_DIRECTION = $56 ; L1
|
||||
; BEAST_X = $51 ; L1
|
||||
; BEAST_Y = $52 ; L1
|
||||
; BEAST_GAIT = $53 ; L1
|
||||
; BEAST_COUNT = $54 ; L1
|
||||
; BEAST_STATE = $55
|
||||
; B_STANDING = $00
|
||||
; B_RUNNING = $01
|
||||
; B_FALLING = $02
|
||||
; B_DEAD = $03
|
||||
; BEAST_DIRECTION = $56 ; L1
|
||||
|
||||
|
||||
|
||||
@ -65,6 +64,7 @@ C_FINE_TONE = $74
|
||||
C_COARSE_TONE = $75
|
||||
NOISE = $76
|
||||
ENABLE = $77
|
||||
PT3_MIXER_VAL = $77
|
||||
A_VOLUME = $78
|
||||
B_VOLUME = $79
|
||||
C_VOLUME = $7A
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user