Optimization by redusing 2 compare operations (now other part of circle is renderd but still 1/4 of it is renderd.)

wip-hugo/routines/circle/circle.s

@@ -82,16 +82,14 @@ draw_pixel_inv:
 
 increment_y_pos:
         INC Y_rel ; y++
-        INY
-        CPY #$08
-
-        BNE increment_y_pos_end
+        DEY
+        BPL increment_y_pos_end
 move_8px_down:
-        LDY #$00
+        LDY #$07
         ;; Switch to chunk bellow
         ; So we subtract  #$4001
         ; C = 1 because branching!
-        Add_16 btp_mem_pos, btp_mem_pos + 1, #$3F, #$01, ! ;+320
+        Sub_16 btp_mem_pos, btp_mem_pos + 1, #$40, #$01, ! ;-320
 increment_y_pos_end:
 
         ;;t1 += y
@@ -105,7 +103,7 @@ increment_y_pos_end:
         SBC X_rel
         STA t2
         ;; if t2 < 0 then skip to endif
-        CMP #$00
+        ;; we can skipp CMP #$00 because SBC above do the same
         BMI endif
 if:
 decrement_x_pos: