ok two things wrong:

1) bit masks are backwards 2) iter always returning 0
2023-01-22 09:34:42 -08:00 · 2023-01-22 09:34:42 -08:00 · dbbec8ed6d
commit dbbec8ed6d
parent d36667938d
1 changed files with 3 additions and 2 deletions
--- a/mandel.s
+++ b/mandel.s
@ -438,9 +438,9 @@ next:
    ; dist = 0
    ; iter = 0
    lda #00
-    ldx iter - zx
+    ldx #(iter - zx + 1)
 initloop:
-    sta zx,x
+    sta zx - 1,x
    dex
    bne initloop

@ -705,6 +705,7 @@ loop_sx:
    zoom_factor cx, sx, zoom, aspect_x
    zoom_factor cy, sy, zoom, aspect_y
    jsr mandelbrot
+    inc iter
    jsr pset

    clc