diff --git a/Atari/gr_basics.asm b/Atari/gr_basics.asm
index 8df39d1..c2bd0ef 100644
--- a/Atari/gr_basics.asm
+++ b/Atari/gr_basics.asm
@@ -756,16 +756,17 @@ loop  sta (temp),y
       iny
       cpy #screenheight+1
     bne @-
-    ; and bittables for fastes plot and point
+    ; and bittables for fastest plot and point (thanks @jhusak)
     ldy #0
-@   tya
-    and #%00000111
-    tax
-    lda bittable,x
+    lda #$40
+@   asl
+    adc #0
     sta bittable1_long,y
+    tax
     eor #%11111111
     sta bittable2_long,y
-    iny
+    txa
+    dey
     bne @-
     rts
 .endp
diff --git a/C64/gr_basics.asm b/C64/gr_basics.asm
index d7af368..06a1242 100644
--- a/C64/gr_basics.asm
+++ b/C64/gr_basics.asm
@@ -659,16 +659,17 @@ next8lines
       iny
       cpy #screenheight+1
     bne @-
-    ; and bittables for fastes plot and point
+    ; and bittables for fastest plot and point (thanks @jhusak)
     ldy #0
-@   tya
-    and #%00000111
-    tax
-    lda bittable,x
+    lda #$40
+@   asl
+    adc #0
     sta bittable1_long,y
+    tax
     eor #%11111111
     sta bittable2_long,y
-    iny
+    txa
+    dey
     bne @-
     rts
 .endp
diff --git a/constants.asm b/constants.asm
index 07f9674..404ae09 100644
--- a/constants.asm
+++ b/constants.asm
@@ -200,8 +200,8 @@ sintable
 ;    :screenheight+1 .by >(display+screenBytes*#)
 ;----------------------------
 ; now long (256 bytes) bittables are generated in RAM based on one bittable:
-bittable
-    .by $80,$40,$20,$10,$08,$04,$02,$01
+;bittable
+;    .by $80,$40,$20,$10,$08,$04,$02,$01
 ;bittable2
 ;    .by $7f,$bf,$df,$ef,$f7,$fb,$fd,$fe
 ;----------------------------
diff --git a/scorch.bin b/scorch.bin
index a327583..0778971 100644
Binary files a/scorch.bin and b/scorch.bin differ
diff --git a/scorch.xex b/scorch.xex
index f7acd70..9038505 100644
Binary files a/scorch.xex and b/scorch.xex differ
diff --git a/scorchC64.prg b/scorchC64.prg
index 138b57f..0a3c4ff 100644
Binary files a/scorchC64.prg and b/scorchC64.prg differ