fix pixel shift

2023-01-22 09:37:37 -08:00 · 2023-01-22 09:37:37 -08:00 · b4721ae46b
parent dbbec8ed6d
commit b4721ae46b
1 changed files with 3 additions and 0 deletions
--- a/mandel.s
+++ b/mandel.s
@ -584,6 +584,9 @@ point:
    ; pixel_mask <<= pixel_shift (shifting in ones)
    and #3
    sta pixel_shift
+    lda #3
+    sec
+    sbc pixel_shift
    tax
 shift_loop:
    beq shift_done