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https://github.com/a2-4am/million-perfect-letters.git
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add about page
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4am
parent
e089ce7d43
commit
07de19b3cd
2
notes
2
notes
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@ -17,3 +17,5 @@ Subjective bugs:
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4x3-042 reuses VERY too soon
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5x3-004 reuses ENJOY too soon
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5x4-002 does not recognize ROWED or SOWED
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@ -73,6 +73,7 @@ Start
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!source "src/glue.sound.a"
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!source "src/ui.title.a"
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!source "src/ui.main.menu.a"
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!source "src/ui.about.a"
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!source "src/ui.play.a"
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!source "src/ui.common.a"
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!source "src/ui.font.courier.double.prime.a"
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@ -84,3 +85,4 @@ Start
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MainMenuMusic
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!bin "res/M.CEMBALO"
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}
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LastMover
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189
src/ui.about.a
Normal file
189
src/ui.about.a
Normal file
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@ -0,0 +1,189 @@
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;license:MIT
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;(c) 2019 by qkumba
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;(c) 2020 by 4am
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;
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; animated about screen
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;
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; Public functions:
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; - AboutPage
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;
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targetVTAB = $F0
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minHTAB = $F1
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maxHTAB = $F2
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randomchar = $F3
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revealchar = $F4
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revealindex = $F5
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revealtext = $FE
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revealStringsLo
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!byte <kAboutWritten
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!byte <kAboutTested
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!byte <kAboutMusic
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!byte <kAboutElectricDuet
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!byte <kAboutMockingDuet
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!byte 0
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revealStringsHi
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!byte >kAboutWritten
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!byte >kAboutTested
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!byte >kAboutMusic
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!byte >kAboutElectricDuet
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!byte >kAboutMockingDuet
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!byte 0
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revealVTABs
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!byte 4
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!byte 20
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!byte 9
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!byte 14
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!byte 19
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revealHTABs
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!byte 5
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!byte 16
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!byte 17
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!byte 9
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!byte 1
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kAboutWritten
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!byte 14
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!raw "WRITTEN BY 4AM"
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kAboutTested
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!byte 20
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!raw "PLAYTESTED BY QKUMBA"
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kAboutMusic
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!byte 20
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!raw "MUSIC BY ALIAM LENAT"
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kAboutElectricDuet
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!byte 28
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!raw "SOUND ROUTINES BY PAUL LUTUS"
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kAboutMockingDuet
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!byte 35
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!raw "MOCKINGBOARD ROUTINES BY CYBERNESTO"
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AboutPage
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jsr Home
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@outerloop
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lda #0
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sta revealindex
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@loop ldx revealindex
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lda revealVTABs, x
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sta targetVTAB
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lda revealHTABs, x
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sta minHTAB
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lda revealStringsHi, x
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beq @outerloop
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tay
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lda revealStringsLo, x
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jsr HeavySilkReveal
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ldx #5
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lda #0
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- jsr WaitForKeyWithTimeout
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bmi @exit
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dex
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bpl -
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inc revealindex
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bne @loop
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@exit rts
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HeavySilkReveal
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+ST16 revealtext
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ldy #0
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lda (revealtext), y
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clc
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adc minHTAB
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sta maxHTAB
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RevealStartingChar=*+1
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lda #$41 ; 'A'
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@outerloop
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sta randomchar
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; init RNG
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ldy #1
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sty @rnd1+1
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dey
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sty @rnd2+1
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@loop
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; generate next value in linear feedback shift register (LFSR)
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ldy @rnd1+1
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ldx @rnd2+1
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lsr @rnd2+1
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ror @rnd1+1
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bcc +
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; feedback polynomial form #$03FC for period of 1023
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; https://en.wikipedia.org/wiki/Linear-feedback_shift_register
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; https://users.ece.cmu.edu/~koopman/lfsr/index.html
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lda @rnd1+1
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eor #$FC
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sta @rnd1+1
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lda @rnd2+1
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eor #$03
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sta @rnd2+1
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; calculate VTAB/HTAB from 2-byte LFSR value
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+ lda #24
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sta VTAB
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dey
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cpy #$FF
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bne +
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dex
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+ tya
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- dec VTAB
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bmi @loop
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sec
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sbc #40
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bcs -
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dex
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bpl -
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eor #$FF
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sta HTAB
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jsr @draw
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lda randomchar
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cmp #$20
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beq +
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inc randomchar
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cmp #$5A
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bcc +
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sbc #$19
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sta randomchar
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; wait after drawing each letter, while checking for keypress
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+ lda #$0A
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jsr WaitForKeyWithTimeout
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bmi @exit
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; exit conditions for feedback polynomial
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@rnd2 lda #0 ; SMC
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bne @loop
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@rnd1 lda #0 ; SMC
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cmp #1
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bne @loop
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; loop back to do the reveal
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lda randomchar
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cmp #$20
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beq @exit
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sta RevealStartingChar
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lda #$20
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bne @outerloop ; always branches
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@exit
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rts
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@draw
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; check if this position is part of the reveal text
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lda VTAB
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cmp targetVTAB
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bne @drawRandom
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lda HTAB
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cmp minHTAB
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bcc @drawRandom
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cmp maxHTAB
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bcc @drawReveal
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@drawRandom
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; draw 'random' character
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lda #randomchar
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- ldy #$00
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ldx #$01
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jmp DrawHeavySilkBuffer
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@drawReveal
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; draw character from reveal text
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sec
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sbc minHTAB
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tay
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iny
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lda (revealtext), y
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sta revealchar
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lda #revealchar
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bne - ; always branches
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@ -26,6 +26,8 @@ MainMenu
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and #$7F
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cmp #$0D ; Return
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beq @eventReturn
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cmp #$01 ; Ctrl-A
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beq @eventCtrlA
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cmp #$1B ; Esc
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bne @menuloop
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;@eventEsc
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@ -35,6 +37,10 @@ MainMenu
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jsr SelectWorld
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bcs MainMenu
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rts ; return to caller with A = world ID
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@eventCtrlA
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jsr AboutPage
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sec
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bcs MainMenu
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@drawMenuTitle
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jsr Home
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lda #1
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@ -56,8 +62,8 @@ MainMenu
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@drawMenuText
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+PRINT_AT asterisk, 2, 30
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+PRINT_AT menuline_play, 13, 10
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+PRINT_AT menuline_demo, 14, 10
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+PRINT_AT menuline_sound, 15, 10
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+PRINT_AT menuline_sound, 14, 10
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+PRINT_AT menuline_about, 15, 10
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+PRINT_AT menuline_quit, 16, 10
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+PRINT_AT disclaimer, 23, 0
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rts
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@ -232,12 +238,12 @@ asterisk
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menuline_play
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!byte 20
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!raw "RETURN.....PLAY GAME"
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menuline_demo
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!byte 20
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!raw "CTRL-D.....DEMO MODE"
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menuline_sound
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!byte 21
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!raw "CTRL-S.....SOUND (ON)"
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!raw "CTRL-S.....SOUND (ON) "
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menuline_about
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!byte 16
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!raw "CTRL-A.....ABOUT"
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menuline_quit
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!byte 15
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!raw " ESC.....QUIT"
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