remove old checkerboard effects

res/FX.CONF

@@ -70,9 +70,8 @@ CASCADE
 SNOWFLAKE
 VERTICAL.BLINDS
 BUTTERFLY.IN
-CHECKERBOARD
 LR.BY.PIXEL
-CHECKER.FIZZLE
+CHECKERB.FIZZLE
 STAGGERWHITE.LR
 SOFT.UD.OUT
 ONESQUARE
@@ -106,7 +105,6 @@ LITTLE.BOXES
 SPIRAL
 WAVY.CORNER
 REDLINES
-CHECKERB.FIZZLE
 [eof]
 
 #

src/fx/fx.hgr.checker.fizzle.a

@@ -1,106 +0,0 @@
-;license:MIT
-;(c) 2017-2019 by qkumba and 4am
-
-!cpu 6502
-!to "build/FX/CHECKER.FIZZLE",plain
-*=$6000
-
-copymask_even = $f0
-copymask_odd = $f1
-counter = $f2
-
-         !source "src/fx/macros.a"
-
-         ;init masks
-
-         lda   #%10000000
-         sta   copymask_even
-         lda   #%11111111
-         sta   copymask_odd
-         lda   #2
-         sta   counter
-
-@outerloop
-         ;init RNG
-
-         ldx   #1
-         stx   @rnd1+1
-         dex
-         stx   @rnd2+1
-
-         ;iterate
-
-@loop
-         ldy   @rnd1+1
-         ldx   @rnd2+1
-         lsr   @rnd2+1
-         ror   @rnd1+1
-         bcc   +
-
-         ;feedback polynomial forms #$100D for period of 8191
-
-         lda   @rnd1+1
-         eor   #$0d
-         sta   @rnd1+1
-         lda   @rnd2+1
-         eor   #$10
-         sta   @rnd2+1
-
-         ;little hack to avoid missing offset zero
-         ;screen hole at $xxFF is missed instead
-
-+        tya
-         eor   #$ff
-         sta   $26
-         sta   $3c
-         txa
-
-         ;target page 1
-
-         ora   #$20
-         sta   $27
-         eor   #$60
-         sta   $3d
-
-         ;copy pixel from other page to this page
-         ldy   #0
-         lda   $26
-         and   #1
-         sta   $00
-         lda   $26
-         rol
-         rol
-         and   #1
-         eor   $00
-         bne   @odd
-         lda   ($26),y
-         eor   ($3c),y
-         and   copymask_even
-         eor   ($26),y
-         sta   ($26),y
-         jmp   @next
-@odd
-         lda   ($26),y
-         eor   ($3c),y
-         and   copymask_odd
-         eor   ($26),y
-         sta   ($26),y
-@next
-
-         lda   $c000
-         bmi   @exit
-
-         ;and exit condition
-
-@rnd2    lda   #0
-         bne   @loop
-@rnd1    lda   #0
-         cmp   #1
-         bne   @loop
-
-         lda   #$FF
-         sta   copymask_even
-         sta   copymask_odd
-         dec   counter
-         +LBNE @outerloop
-@exit    rts

src/fx/fx.hgr.checkerboard.white.a

@@ -1,54 +0,0 @@
-;license:MIT
-;(c) 2018 by 4am
-;
-!cpu 6502
-!to "build/FX/CHECKERBOARD",plain
-*=$6000
-
-         lda   #$01
-         sta   $FD
-@outerloop
-         dec   $FD
-         lda   #<@coords
-         sta   $FE
-         lda   #>@coords
-         sta   $FF
-         ldy   #$00
-@loop
-         lda   ($fe),y
-         bpl   @copy
-         lda   #$20
-         jsr   WaitForKeyWithTimeout
-         bmi   @exit
-         bpl   @next                 ; always branches
-@copy
-         tax
-         iny
-         lda   ($fe),y
-         tay
-         txa
-         bit   $FD
-         bpl   +
-         jsr   HGRBlockCopy
-         beq   @next                 ; always branches
-+        jsr   HGRBlockToWhite
-@next
-         inc   $FE
-         bne   +
-         inc   $FF
-+        inc   $FE
-         bne   +
-         inc   $FF
-+        ldy   #$00
-         lda   ($FE),y
-         cmp   #$80
-         bne   @loop
-         bit   $FD
-         bpl   @outerloop
-@exit    rts
-
-@coords
-         !source "src/fx/fx.hgr.checkerboard.data.a"
-         !byte $80
-         !source "src/wait.a"
-         !source "src/fx/fx.hgr.common.a"