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https://github.com/deater/dos33fsprogs.git
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59 lines
1.1 KiB
ArmAsm
59 lines
1.1 KiB
ArmAsm
;=================================
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; action_stars
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;=================================
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; and take 4504 cycles to do it
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; we take 4501, so waste 3
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action_stars:
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jsr draw_stars ; 6+4492 = 4498
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ldy FRAME ;nop ; 3
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jmp check_keyboard ; 3
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;=================================
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; action_launch_firework
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;=================================
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; and take 4504 cycles to do it
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; we take 419 so waste 4085
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action_launch_firework:
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; Try X=203 Y=4 cycles=405
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ldy #4 ; 2
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Xloop1: ldx #203 ; 2
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Xloop2: dex ; 2
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bne Xloop2 ; 2nt/3
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dey ; 2
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bne Xloop1 ; 2nt/3
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jsr launch_firework ; 6+410 = 416
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jmp check_keyboard ; 3
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;=================================
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; action_move_rocket
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;=================================
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; and take 4504 cycles to do it
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; we take 160 so waste 4344
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action_move_rocket:
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; Try X=19 Y=43 cycles=4344
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ldy #43 ; 2
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Yloop1: ldx #19 ; 2
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Yloop2: dex ; 2
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bne Yloop2 ; 2nt/3
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dey ; 2
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bne Yloop1 ; 2nt/3
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jsr move_rocket ; 6+151 = 157
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jmp check_keyboard ; 3
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