From 839330edb326ad2b7fbcf25f9886d9d14696280d Mon Sep 17 00:00:00 2001
From: Brion Vibber <brion@pobox.com>
Date: Sun, 5 Feb 2023 15:14:24 -0800
Subject: [PATCH] fixes

---
 mandel.s | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/mandel.s b/mandel.s
index 1a153de..097b700 100644
--- a/mandel.s
+++ b/mandel.s
@@ -772,13 +772,14 @@ loop_sx:
     jsr mandelbrot
     jsr pset
 
+
     ; check if we should update the counters
     ;
     ; count_pixels >= width? update!
     inc count_pixels
     lda count_pixels
     cmp #width
-    bpl update_status
+    bmi update_status
 
     ; count_frames >= 120? update!
     lda count_frames
@@ -820,14 +821,13 @@ update_status:
     ; FR0 *= ms_per_frame
     ldx #.lobyte(ms_per_frame)
     ldy #.hibyte(ms_per_frame)
+    jsr FLD1R
     jsr FMUL
 
-    ; FR1 = total_ms
+    ; FR0 += total_ms
     ldx #total_ms
     ldy #0
     jsr FLD1R
-
-    ; FR0 += FR1
     jsr FADD
 
     ; total_ms = FR0
@@ -835,12 +835,10 @@ update_status:
     ldy #0
     jsr FST0R
 
-    ; FR1 = total_pixels
+    ; FR0 /= total_pixels
     ldx #total_pixels
     ldy #0
     jsr FLD1R
-
-    ; FR0 /= FR1
     jsr FDIV
 
     ; convert to ASCII in INBUFF