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51 lines
757 B
ArmAsm
51 lines
757 B
ArmAsm
;
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;
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chapter1_transition:
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;===================================
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; show chpater screen and play music
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;===================================
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lda #<part1_lzsa
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sta LZSA_SRC_LO
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lda #>part1_lzsa
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sta LZSA_SRC_HI
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lda #$c ; load to page $c00
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jsr decompress_lzsa2_fast
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; copy over background
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jsr gr_copy_to_current
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; flip page
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jsr page_flip
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;=============================
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; play music if mockingboard
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;=============================
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lda SOUND_STATUS
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and #SOUND_MOCKINGBOARD
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beq skip_start_music
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cli
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skip_start_music:
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ldx #$D0
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jsr wait_a_bit
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; turn off music
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lda SOUND_STATUS
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and #SOUND_MOCKINGBOARD
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beq skip_turn_off_music
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sei ; disable interrupts
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jsr clear_ay_both
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skip_turn_off_music:
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rts
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