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ds: credits cycle count good
This commit is contained in:
Vince Weaver
parent
81472025b4
commit
db4c8a655a
@ -142,9 +142,9 @@ credits_loop:
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; -696 -- move+draw 4*(16+26+6+126) = 696
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; -10 -- keypress
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; -12 -- call/return of draw code
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; -377 -- do_words
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; -446 -- do_words
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;=======
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; 2873
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; 2804
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pad_time:
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@ -155,7 +155,7 @@ pad_time:
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; do words
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;=========================
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jsr draw_credits
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jsr draw_credits ; 6+440
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;=========================
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; ERASE
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@ -324,12 +324,12 @@ pad_time:
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; WAIT for VBLANK to finish
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;============================
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; Try X=7 Y=70 cycles=2871 R2
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; Try X=61 Y=9 cycles=2800 R4
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nop
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nop
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ldy #70 ; 2
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tloop1: ldx #7 ; 2
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ldy #9 ; 2
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tloop1: ldx #61 ; 2
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tloop2: dex ; 2
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bne tloop2 ; 2nt/3
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dey ; 2
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@ -416,84 +416,129 @@ yellow_x: .byte $20
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green_x: .byte $30
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blue_x: .byte $40
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;=================================
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; draw credits
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;=================================
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; credits pointer
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;
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; noframe: 13 = 13 (need 427) +12
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; end: 13+12= 25 (need 415) +83
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; newchar: 13+12+4+79 = 108 (need 333) +332
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; putchar: 13+12+4+377+28+6 = 440
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draw_credits:
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inc FRAME ; 5
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lda FRAME ; 3
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and #$f ; 2
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beq credits_handle_next ; 3
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;====
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; 13
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credits_long_delay:
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; -1
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; 12+1 = 13 cycles
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lda TEMP ; 3
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lda TEMP ; 3
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lda TEMP ; 3
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nop ; 2
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nop ; 2
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credits_skip:
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; 83 cycles
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lda #56 ; 2
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jsr delay_a ; delay 25+a (81)
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credits_short_delay:
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; 332 cycles-6 = 326
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rts
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; 83 cycles
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lda #56 ; 2
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jsr delay_a ; delay 25+a (81)
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; 243 cycles
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lda #216 ; 2
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jsr delay_a ; delay 25+a (241)
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rts ; 6
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credits_handle_next:
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ldy #0 ; 2
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lda (CREDITS_POINTERL),Y ; 5+
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lda (CREDITS_POINTERL),Y ; 5
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cmp #$ff ; 2
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beq credits_skip ; 3
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;===
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; 12
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; -1
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cmp #'@' ; 2
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bcs credits_put_char ; bge ; 3
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;====
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; 4
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credits_check_xy:
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; -1
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sta CREDITS_Y
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iny
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lda (CREDITS_POINTERL),Y
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sta CREDITS_X
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iny
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lda (CREDITS_POINTERL),Y
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sta colors_hi
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iny
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lda (CREDITS_POINTERL),Y
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sta colors_hi+1
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iny
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lda (CREDITS_POINTERL),Y
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sta colors_lo
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iny
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lda (CREDITS_POINTERL),Y
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sta colors_lo+1
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sta CREDITS_Y ; 3
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iny ; 2
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lda (CREDITS_POINTERL),Y ; 5
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sta CREDITS_X ; 3
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iny ; 2
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;====
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; 14
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iny
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clc
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tya
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adc CREDITS_POINTERL
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sta CREDITS_POINTERL
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lda #0
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adc CREDITS_POINTERH
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sta CREDITS_POINTERH
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lda (CREDITS_POINTERL),Y ; 5
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sta colors_hi ; 4
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iny ; 2
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lda (CREDITS_POINTERL),Y ; 5
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sta colors_hi+1 ; 4
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iny ; 2
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lda (CREDITS_POINTERL),Y ; 5
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sta colors_lo ; 4
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iny ; 2
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lda (CREDITS_POINTERL),Y ; 5
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sta colors_lo+1 ; 4
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iny ; 2
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;===
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; 44
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jmp credits_short_delay
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clc ; 2
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tya ; 2
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adc CREDITS_POINTERL ; 3
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sta CREDITS_POINTERL ; 3
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lda #0 ; 2
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adc CREDITS_POINTERH ; 3
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sta CREDITS_POINTERH ; 3
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jmp credits_short_delay ; 3
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;====
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; 21
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credits_put_char:
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ldx CREDITS_X ; 2
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ldx CREDITS_X ; 3
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ldy CREDITS_Y ; 3
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jsr put_char ; 6+365
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;======
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; 377
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clc
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lda CREDITS_X
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adc #4
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sta CREDITS_X
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clc ; 2
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lda CREDITS_X ; 3
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adc #4 ; 2
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sta CREDITS_X ; 3
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clc
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lda #1
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adc CREDITS_POINTERL
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sta CREDITS_POINTERL
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lda #0
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adc CREDITS_POINTERH
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sta CREDITS_POINTERH
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clc ; 2
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lda #1 ; 2
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adc CREDITS_POINTERL ; 3
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sta CREDITS_POINTERL ; 3
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lda #0 ; 2
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adc CREDITS_POINTERH ; 3
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sta CREDITS_POINTERH ; 3
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;=====
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; 28
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draw_credits_end:
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rts ; 6
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.align $100
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credits_text:
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.byte 0,10, $C4,$CF,$FC,$4C, 'C','O','D','E','[' ; "CODE:"
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.byte 4,8, $C4,$CF,$FC,$4C, 'D','E','A','T','E','R' ; "DEATER"
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@ -507,5 +552,23 @@ credits_text:
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.byte 0,8, $00,$00,$00,$00, 'M','U','S','I','C','[' ; "MUSIC:"
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.byte 4,14, $00,$00,$00,$00, 'D','Y','A' ; "DYA"
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.byte 0,8, $C4,$CF,$FC,$4C, 'M','A','G','I','C','[' ; "MAGIC:"
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.byte 4,8, $C4,$CF,$FC,$4C, 'Q','K','U','M','B','A' ; "QKUMBA"
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.byte '@','@' ; time pad
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.byte 0,8, $00,$00,$00,$00, 'M','A','G','I','C','[' ; "MAGIC:"
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.byte 4,8, $00,$00,$00,$00, 'Q','K','U','M','B','A' ; "QKUMBA"
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.byte 0,8, $C4,$CF,$FC,$4C, 'T','H','A','N','K','S' ; "THANKS"
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.byte 4,4, $C4,$CF,$FC,$4C, 'F','R','O','G','Y','S','U','E' ; "FROGYSUE"
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.byte '@' ; time pad
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.byte 0,8, $00,$00,$00,$00, 'T','H','A','N','K','S' ; "THANKS"
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.byte 4,4, $00,$00,$00,$00, 'F','R','O','G','Y','S','U','E' ; "FROGYSUE"
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.byte 0,10, $C4,$CF,$FC,$4C, 'A','@','V','M','W' ; "A VMW"
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.byte 4,0, $C4,$CF,$FC,$4C, 'P','R','O','D','U','C','T','I','O','N'
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; "PRODUCTION"
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.byte 255 ; done
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credits_text_end:
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.assert >credits_text = >(credits_text_end-1), error, "credits_text crosses page"
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