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rbs: re-acquire lock
This commit is contained in:
Vince Weaver
parent
c590879d08
commit
9e49a0e0e2
@ -45,7 +45,7 @@ RASTERBARS_SOUND: rasterbars_sound.o
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rasterbars_sound.o: rasterbars_sound.s gr_copy.s \
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rasterbars_screen.s rasterbars_table.s movement_table.s rb_bg.inc \
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pt3_lib_ci.s interrupt_handler.s mockingboard_a.s
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pt3_lib_ci.s mockingboard_a.s
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ca65 -o rasterbars_sound.o rasterbars_sound.s -l rasterbars_sound.lst
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@ -1,172 +0,0 @@
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;================================
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;================================
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; mockingboard interrupt handler
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;================================
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;================================
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; On Apple II/6502 the interrupt handler jumps to address in 0xfffe
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; This is in the ROM, which saves the registers
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; on older IIe it saved A to $45 (which could mess with DISK II)
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; newer IIe doesn't do that.
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; It then calculates if it is a BRK or not (which trashes A)
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; Then it sets up the stack like an interrupt and calls 0x3fe
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; Note: the IIc is much more complicated
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; its firmware tries to decode the proper source
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; based on various things, including screen hole values
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; we bypass that by switching out ROM and replacing the
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; $fffe vector with this, but that does mean we have
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; to be sure status flag and accumulator set properly
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interrupt_handler:
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php
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pha ; save A ; 3
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; A is saved in $45 by firmware
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txa
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pha ; save X
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tya
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pha ; save Y
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; inc $0404 ; debug (flashes char onscreen)
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bit $C404 ; clear 6522 interrupt by reading T1C-L ; 4
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lda DONE_PLAYING ; 3
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beq pt3_play_music ; if song done, don't play music ; 3/2nt
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jmp exit_interrupt ; 3
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pt3_play_music:
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; decode a frame of music
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jsr pt3_make_frame
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; handle song over condition
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lda DONE_SONG
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beq mb_write_frame ; if not done, continue
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lda LOOP ; see if looping
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beq move_to_next
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pt3_loop_smc:
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lda #$d1 ; looping, move to loop location
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; non-zero to avoid the temptation
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; to merge with following lda #$0
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sta current_pattern_smc+1
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lda #$0
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sta current_line_smc+1
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sta current_subframe_smc+1
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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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ldy #MOCK_AY_LATCH_ADDR ; latch_address for PB1 ; 2
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sty MOCK_6522_ORB1 ; latch_address on PB1 ; 4
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sty 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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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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; 56
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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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;=================================
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; Finally done with this interrupt
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;=================================
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done_interrupt:
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exit_interrupt:
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pla
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tay ; restore Y
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pla
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tax ; restore X
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pla ; restore a ; 4
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; this is needed on II+/IIe not not IIc
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interrupt_smc:
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lda $45 ; restore A
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plp
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rti ; return from interrupt ; 6
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;============
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; typical
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; ???? cycles
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; stop playing for now
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; quiet down the Mockingboard
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; (otherwise will be stuck on last note)
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quiet_exit:
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stx DONE_PLAYING
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jsr clear_ay_both
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;ldx #$ff ; also mute the channel
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stx AY_REGISTERS+7 ; just in case
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jmp done_interrupt
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@ -242,7 +242,7 @@ mb4_not_in_this_slot:
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.align $100
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@ -65,6 +65,8 @@ NOTE_TONE_SLIDE_TO_STEP =39
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NOTE_STRUCT_SIZE=40
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; All vars in zero page or SMC
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note_a = $80
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note_b = $80+(NOTE_STRUCT_SIZE*1)
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note_c = $80+(NOTE_STRUCT_SIZE*2)
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@ -72,288 +74,7 @@ note_c = $80+(NOTE_STRUCT_SIZE*2)
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begin_vars=$80
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end_vars=$80+(NOTE_STRUCT_SIZE*3)
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.if 0
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begin_vars:
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note_a: ; reset?
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.byte $0 ; NOTE_VOLUME ; 0 ; Y
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.byte $0 ; NOTE_TONE_SLIDING_L ; 1 ; Y
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.byte $0 ; NOTE_TONE_SLIDING_H ; 2 ; Y
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.byte $0 ; NOTE_ENABLED ; 3 ; Y
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.byte $0 ; NOTE_ENVELOPE_ENABLED ; 4 ; Y
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.byte $0 ; NOTE_SAMPLE_POINTER_L ; 5 ; Y
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.byte $0 ; NOTE_SAMPLE_POINTER_H ; 6 ; Y
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.byte $0 ; NOTE_SAMPLE_LOOP ; 7 ; Y
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.byte $0 ; NOTE_SAMPLE_LENGTH ; 8 ; Y
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.byte $0 ; NOTE_TONE_L ; 9
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.byte $0 ; NOTE_TONE_H ; 10
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.byte $0 ; NOTE_AMPLITUDE ; 11
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.byte $0 ; NOTE_NOTE ; 12
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.byte $0 ; NOTE_LEN ; 13
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.byte $0 ; NOTE_LEN_COUNT ; 14
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.byte $0 ; NOTE_ADDR_L ; 15
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.byte $0 ; NOTE_ADDR_H ; 16
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.byte $0 ; NOTE_ORNAMENT_POINTER_L ; 17 ; Y
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.byte $0 ; NOTE_ORNAMENT_POINTER_H ; 18 ; Y
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.byte $0 ; NOTE_ORNAMENT_LOOP ; 19 ; Y
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.byte $0 ; NOTE_ORNAMENT_LENGTH ; 20 ; Y
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.byte $0 ; NOTE_ONOFF ; 21
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.byte $0 ; NOTE_TONE_ACCUMULATOR_L ; 22
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.byte $0 ; NOTE_TONE_ACCUMULATOR_H ; 23
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.byte $0 ; NOTE_TONE_SLIDE_COUNT ; 24
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.byte $0 ; NOTE_ORNAMENT_POSITION ; 25 ; Y
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.byte $0 ; NOTE_SAMPLE_POSITION ; 26 ; Y
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.byte $0 ; NOTE_ENVELOPE_SLIDING ; 27
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.byte $0 ; NOTE_NOISE_SLIDING ; 28
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.byte $0 ; NOTE_AMPLITUDE_SLIDING ; 29
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.byte $0 ; NOTE_ONOFF_DELAY ; 30
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.byte $0 ; NOTE_OFFON_DELAY ; 31
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.byte $0 ; NOTE_TONE_SLIDE_STEP_L ; 32
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.byte $0 ; NOTE_TONE_SLIDE_STEP_H ; 33
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.byte $0 ; NOTE_TONE_SLIDE_DELAY ; 34
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.byte $0 ; NOTE_SIMPLE_GLISS ; 35
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.byte $0 ; NOTE_SLIDE_TO_NOTE ; 36
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.byte $0 ; NOTE_TONE_DELTA_L ; 37
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.byte $0 ; NOTE_TONE_DELTA_H ; 38
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.byte $0 ; NOTE_TONE_SLIDE_TO_STEP ; 39
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note_b:
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.byte $0 ; NOTE_VOLUME
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.byte $0 ; NOTE_TONE_SLIDING_L
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.byte $0 ; NOTE_TONE_SLIDING_H
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.byte $0 ; NOTE_ENABLED
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.byte $0 ; NOTE_ENVELOPE_ENABLED
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.byte $0 ; NOTE_SAMPLE_POINTER_L
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.byte $0 ; NOTE_SAMPLE_POINTER_H
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.byte $0 ; NOTE_SAMPLE_LOOP
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.byte $0 ; NOTE_SAMPLE_LENGTH
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.byte $0 ; NOTE_TONE_L
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.byte $0 ; NOTE_TONE_H
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.byte $0 ; NOTE_AMPLITUDE
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.byte $0 ; NOTE_NOTE
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.byte $0 ; NOTE_LEN
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.byte $0 ; NOTE_LEN_COUNT
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.byte $0 ; NOTE_ADDR_L
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.byte $0 ; NOTE_ADDR_H
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.byte $0 ; NOTE_ORNAMENT_POINTER_L
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.byte $0 ; NOTE_ORNAMENT_POINTER_H
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.byte $0 ; NOTE_ORNAMENT_LOOP
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.byte $0 ; NOTE_ORNAMENT_LENGTH
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.byte $0 ; NOTE_ONOFF
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.byte $0 ; NOTE_TONE_ACCUMULATOR_L
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.byte $0 ; NOTE_TONE_ACCUMULATOR_H
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.byte $0 ; NOTE_TONE_SLIDE_COUNT
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.byte $0 ; NOTE_ORNAMENT_POSITION
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.byte $0 ; NOTE_SAMPLE_POSITION
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.byte $0 ; NOTE_ENVELOPE_SLIDING
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.byte $0 ; NOTE_NOISE_SLIDING
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.byte $0 ; NOTE_AMPLITUDE_SLIDING
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.byte $0 ; NOTE_ONOFF_DELAY
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.byte $0 ; NOTE_OFFON_DELAY
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.byte $0 ; NOTE_TONE_SLIDE_STEP_L
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.byte $0 ; NOTE_TONE_SLIDE_STEP_H
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.byte $0 ; NOTE_TONE_SLIDE_DELAY
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.byte $0 ; NOTE_SIMPLE_GLISS
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.byte $0 ; NOTE_SLIDE_TO_NOTE
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.byte $0 ; NOTE_TONE_DELTA_L
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.byte $0 ; NOTE_TONE_DELTA_H
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.byte $0 ; NOTE_TONE_SLIDE_TO_STEP
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note_c:
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.byte $0 ; NOTE_VOLUME
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.byte $0 ; NOTE_TONE_SLIDING_L
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.byte $0 ; NOTE_TONE_SLIDING_H
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.byte $0 ; NOTE_ENABLED
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.byte $0 ; NOTE_ENVELOPE_ENABLED
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.byte $0 ; NOTE_SAMPLE_POINTER_L
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.byte $0 ; NOTE_SAMPLE_POINTER_H
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.byte $0 ; NOTE_SAMPLE_LOOP
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.byte $0 ; NOTE_SAMPLE_LENGTH
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.byte $0 ; NOTE_TONE_L
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.byte $0 ; NOTE_TONE_H
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.byte $0 ; NOTE_AMPLITUDE
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.byte $0 ; NOTE_NOTE
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.byte $0 ; NOTE_LEN
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.byte $0 ; NOTE_LEN_COUNT
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.byte $0 ; NOTE_ADDR_L
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.byte $0 ; NOTE_ADDR_H
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.byte $0 ; NOTE_ORNAMENT_POINTER_L
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.byte $0 ; NOTE_ORNAMENT_POINTER_H
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.byte $0 ; NOTE_ORNAMENT_LOOP
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.byte $0 ; NOTE_ORNAMENT_LENGTH
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.byte $0 ; NOTE_ONOFF
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.byte $0 ; NOTE_TONE_ACCUMULATOR_L
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.byte $0 ; NOTE_TONE_ACCUMULATOR_H
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.byte $0 ; NOTE_TONE_SLIDE_COUNT
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.byte $0 ; NOTE_ORNAMENT_POSITION
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.byte $0 ; NOTE_SAMPLE_POSITION
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.byte $0 ; NOTE_ENVELOPE_SLIDING
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.byte $0 ; NOTE_NOISE_SLIDING
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.byte $0 ; NOTE_AMPLITUDE_SLIDING
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.byte $0 ; NOTE_ONOFF_DELAY
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.byte $0 ; NOTE_OFFON_DELAY
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.byte $0 ; NOTE_TONE_SLIDE_STEP_L
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.byte $0 ; NOTE_TONE_SLIDE_STEP_H
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.byte $0 ; NOTE_TONE_SLIDE_DELAY
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.byte $0 ; NOTE_SIMPLE_GLISS
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.byte $0 ; NOTE_SLIDE_TO_NOTE
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.byte $0 ; NOTE_TONE_DELTA_L
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.byte $0 ; NOTE_TONE_DELTA_H
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.byte $0 ; NOTE_TONE_SLIDE_TO_STEP
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end_vars:
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.endif
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load_ornament0_sample1:
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lda #0 ; 2
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jsr load_ornament ; 6
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; fall through
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;===========================
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; Load Sample
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;===========================
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; sample in A
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; which note offset in X
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; Sample table pointers are 16-bits little endian
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; There are 32 of these pointers starting at $6a:$69
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; Our sample starts at address (A*2)+that pointer
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; We point SAMPLE_H:SAMPLE_L to this
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; then we load the length/data values
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; and then leave SAMPLE_H:SAMPLE_L pointing to begnning of
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; the sample data
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; Optimization:
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; see comments on ornament setting
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load_sample1:
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lda #1 ; 2
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load_sample:
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sty TEMP ; 3
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;pt3->ornament_patterns[i]=
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; (pt3->data[0x6a+(i*2)]<<8)|pt3->data[0x69+(i*2)];
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asl ; A*2 ; 2
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tay ; 2
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; Set the initial sample pointer
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; a->sample_pointer=pt3->sample_patterns[a->sample];
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lda PT3_LOC+PT3_SAMPLE_LOC_L,Y ; 4+
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sta SAMPLE_L ; 3
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lda PT3_LOC+PT3_SAMPLE_LOC_L+1,Y ; 4+
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; assume pt3 file is at page boundary
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adc #>PT3_LOC ; 2
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sta SAMPLE_H ; 3
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; Set the loop value
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; a->sample_loop=pt3->data[a->sample_pointer];
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ldy #0 ; 2
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lda (SAMPLE_L),Y ; 5+
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sta note_a+NOTE_SAMPLE_LOOP,X ; 5
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; Set the length value
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; a->sample_length=pt3->data[a->sample_pointer];
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iny ; 2
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lda (SAMPLE_L),Y ; 5+
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sta note_a+NOTE_SAMPLE_LENGTH,X ; 5
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; Set pointer to beginning of samples
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lda SAMPLE_L ; 3
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adc #$2 ; 2
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sta note_a+NOTE_SAMPLE_POINTER_L,X ; 5
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lda SAMPLE_H ; 3
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adc #$0 ; 2
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sta note_a+NOTE_SAMPLE_POINTER_H,X ; 5
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ldy TEMP ; 3
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rts ; 6
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;============
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; 76
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;===========================
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; Load Ornament
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;===========================
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; ornament value in A
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; note offset in X
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; Ornament table pointers are 16-bits little endian
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; There are 16 of these pointers starting at $aa:$a9
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; Our ornament starts at address (A*2)+that pointer
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; We point ORNAMENT_H:ORNAMENT_L to this
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; then we load the length/data values
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; and then leave ORNAMENT_H:ORNAMENT_L pointing to begnning of
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; the ornament data
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; Optimization:
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; Loop and length only used once, can be located negative
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; from the pointer, but 6502 doesn't make addressing like that
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; easy. Can't self modify as channels A/B/C have own copies
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; of the var.
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load_ornament:
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sty TEMP ; save Y value ; 3
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;pt3->ornament_patterns[i]=
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; (pt3->data[0xaa+(i*2)]<<8)|pt3->data[0xa9+(i*2)];
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asl ; A*2 ; 2
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tay ; 2
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; a->ornament_pointer=pt3->ornament_patterns[a->ornament];
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lda PT3_LOC+PT3_ORNAMENT_LOC_L,Y ; 4+
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sta ORNAMENT_L ; 3
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lda PT3_LOC+PT3_ORNAMENT_LOC_L+1,Y ; 4+
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; we're assuming PT3 is loaded to a page boundary
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adc #>PT3_LOC ; 2
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sta ORNAMENT_H ; 3
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lda #0 ; 2
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sta note_a+NOTE_ORNAMENT_POSITION,X ; 5
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tay ; 2
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; Set the loop value
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; a->ornament_loop=pt3->data[a->ornament_pointer];
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lda (ORNAMENT_L),Y ; 5+
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sta note_a+NOTE_ORNAMENT_LOOP,X ; 5
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; Set the length value
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; a->ornament_length=pt3->data[a->ornament_pointer];
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iny ; 2
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lda (ORNAMENT_L),Y ; 5+
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sta note_a+NOTE_ORNAMENT_LENGTH,X ; 5
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; Set the pointer to the value past the length
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|
||||
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 TEMP ; restore Y value ; 3
|
||||
|
||||
rts ; 6
|
||||
|
||||
;============
|
||||
; 83
|
||||
|
||||
|
||||
|
||||
@ -570,6 +291,184 @@ vol_done:
|
||||
|
||||
|
||||
|
||||
;========================================================================
|
||||
;========================================================================
|
||||
;========================================================================
|
||||
;========================================================================
|
||||
;========================================================================
|
||||
; EVERYTHING AFTER THIS IS CYCLE COUNTED
|
||||
;========================================================================
|
||||
;========================================================================
|
||||
;========================================================================
|
||||
;========================================================================
|
||||
;========================================================================
|
||||
|
||||
.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 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 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 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 #$0 ; 2
|
||||
sta note_a+NOTE_ORNAMENT_POINTER_H,X ; 5
|
||||
|
||||
ldy TEMP ; restore Y value ; 3
|
||||
|
||||
rts ; 6
|
||||
|
||||
;============
|
||||
; 83
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
@ -579,8 +478,11 @@ vol_done:
|
||||
;=====================================
|
||||
; note offset in X
|
||||
|
||||
; 6+48 = 54
|
||||
|
||||
calculate_note:
|
||||
|
||||
.if 0
|
||||
lda note_a+NOTE_ENABLED,X ; 4+
|
||||
bne note_enabled ; 2/3
|
||||
|
||||
@ -664,32 +566,35 @@ note_not_too_high:
|
||||
; w = GetNoteFreq(j,pt3->frequency_table);
|
||||
|
||||
jsr GetNoteFreq
|
||||
.endif
|
||||
|
||||
; a->tone = (a->tone + a->tone_sliding + w) & 0xfff;
|
||||
|
||||
clc
|
||||
ldy note_a+NOTE_TONE_SLIDING_L,X
|
||||
tya
|
||||
adc note_a+NOTE_TONE_L,X
|
||||
clc ; 2
|
||||
ldy note_a+NOTE_TONE_SLIDING_L,X ; 4
|
||||
tya ; 2
|
||||
adc note_a+NOTE_TONE_L,X ; 4
|
||||
|
||||
sta temp_word_l1_smc+1
|
||||
lda note_a+NOTE_TONE_H,X
|
||||
adc note_a+NOTE_TONE_SLIDING_H,X
|
||||
sta temp_word_h1_smc+1
|
||||
sta temp_word_l1_smc+1 ; 4
|
||||
lda note_a+NOTE_TONE_H,X ; 4
|
||||
adc note_a+NOTE_TONE_SLIDING_H,X ; 4
|
||||
sta temp_word_h1_smc+1 ; 4
|
||||
|
||||
clc ;;can be removed if ADC SLIDING_H cannot overflow
|
||||
clc ;;can be removed if ADC SLIDING_H cannot overflow ; 2
|
||||
temp_word_l1_smc:
|
||||
lda #$d1
|
||||
lda #$d1 ; 2
|
||||
freq_l_smc:
|
||||
adc #$d1
|
||||
sta note_a+NOTE_TONE_L,X
|
||||
adc #$d1 ; 2
|
||||
sta note_a+NOTE_TONE_L,X ; 4
|
||||
temp_word_h1_smc:
|
||||
lda #$d1
|
||||
lda #$d1 ; 2
|
||||
freq_h_smc:
|
||||
adc #$d1
|
||||
and #$0f
|
||||
sta note_a+NOTE_TONE_H,X
|
||||
|
||||
adc #$d1 ; 2
|
||||
and #$0f ; 2
|
||||
sta note_a+NOTE_TONE_H,X ; 4
|
||||
;===========
|
||||
; 48
|
||||
.if 0
|
||||
;=====================
|
||||
; handle tone sliding
|
||||
|
||||
@ -1023,6 +928,8 @@ do_offon:
|
||||
put_offon:
|
||||
sty note_a+NOTE_ONOFF,X
|
||||
|
||||
.endif
|
||||
|
||||
done_onoff:
|
||||
|
||||
rts ; 6
|
||||
@ -1783,7 +1690,7 @@ not_done:
|
||||
; update pattern or line if necessary
|
||||
; then calculate the values for the next frame
|
||||
|
||||
; 8+???
|
||||
; 8+355=363
|
||||
|
||||
;==========================
|
||||
; pattern done early!
|
||||
@ -1869,7 +1776,7 @@ next_pattern:
|
||||
; ????? FIXME/calculate note
|
||||
;
|
||||
|
||||
; 9+36+11+18+30+18+49 = 171
|
||||
; 9+ 184 + 36+11+18+30+18+49 = 355
|
||||
|
||||
do_frame:
|
||||
; AY-3-8910 register summary
|
||||
@ -1889,16 +1796,16 @@ do_frame:
|
||||
stx pt3_envelope_add_smc+1 ; 4
|
||||
;===========
|
||||
; 9
|
||||
.if 0
|
||||
;;ldx #(NOTE_STRUCT_SIZE*0) ; Note A ; 2
|
||||
jsr calculate_note ; 6+?
|
||||
|
||||
;;ldx #(NOTE_STRUCT_SIZE*0) ; Note A
|
||||
jsr calculate_note ; 6+54
|
||||
ldx #(NOTE_STRUCT_SIZE*1) ; Note B ; 2
|
||||
jsr calculate_note ; 6+?
|
||||
jsr calculate_note ; 6+54
|
||||
ldx #(NOTE_STRUCT_SIZE*2) ; Note C ; 2
|
||||
jsr calculate_note ; 6+?
|
||||
jsr calculate_note ; 6+54
|
||||
;=============
|
||||
; FIXME
|
||||
.endif
|
||||
; FIXME 184
|
||||
|
||||
; Note, we assume 1MHz timings, adjust pt3 as needed
|
||||
|
||||
; Load up the Frequency Registers
|
||||
|
||||
@ -57,21 +57,6 @@ apple_iic:
|
||||
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:
|
||||
|
||||
;=======================
|
||||
@ -120,42 +105,6 @@ mockingboard_found:
|
||||
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 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
|
||||
|
||||
|
||||
;==================
|
||||
; init song
|
||||
;==================
|
||||
@ -288,10 +237,10 @@ display_loop:
|
||||
; -582 -- erase 22+4*(8+6+126) = 582
|
||||
; -696 -- move+draw 4*(16+26+6+126) = 696
|
||||
; -10 -- keypress
|
||||
; -185 -- calc values
|
||||
; -369 -- calc values
|
||||
; -997 -- mockingboard out
|
||||
;=======
|
||||
; 2080
|
||||
; 1896
|
||||
|
||||
pad_time:
|
||||
|
||||
@ -464,23 +413,25 @@ pad_time:
|
||||
;============================
|
||||
|
||||
|
||||
jsr pt3_make_frame ; 6+179
|
||||
jsr mb_write_frame ; 6+921
|
||||
jsr pt3_make_frame ; 6+363 = 369
|
||||
jsr mb_write_frame ; 6+991 = 997
|
||||
|
||||
|
||||
;============================
|
||||
; WAIT for VBLANK to finish
|
||||
;============================
|
||||
|
||||
; Try X=45 Y=9 cycles=2080
|
||||
; Try X=125 Y=3 cycles=1894R2
|
||||
|
||||
ldy #9 ; 2
|
||||
loop1: ldx #45 ; 2
|
||||
nop
|
||||
|
||||
ldy #3 ; 2
|
||||
loop1: ldx #125 ; 2
|
||||
loop2: dex ; 2
|
||||
bne loop2 ; 2nt/3
|
||||
dey ; 2
|
||||
bne loop1 ; 2nt/3
|
||||
|
||||
wait_loop_end:
|
||||
|
||||
lda KEYPRESS ; 4
|
||||
bpl no_keypress ; 3
|
||||
@ -489,7 +440,7 @@ no_keypress:
|
||||
|
||||
jmp display_loop ; 3
|
||||
|
||||
|
||||
.assert >loop1 = >(wait_loop_end-1), error, "wait_loop crosses page"
|
||||
|
||||
|
||||
|
||||
@ -586,7 +537,6 @@ yellow_x: .byte $20
|
||||
green_x: .byte $30
|
||||
blue_x: .byte $40
|
||||
|
||||
;.include "interrupt_handler.s"
|
||||
.include "pt3_lib_ci.s"
|
||||
.include "mockingboard_a.s"
|
||||
|
||||
@ -598,4 +548,3 @@ blue_x: .byte $40
|
||||
; to be made throughout the player code
|
||||
song:
|
||||
.incbin "../pt3_player/music/EA.PT3"
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user