From f6489670b117f8c4a2463a81c62c7af4b135852e Mon Sep 17 00:00:00 2001
From: Brooke Vibber <bvibber@pobox.com>
Date: Sat, 22 Aug 2026 15:58:17 -0700
Subject: [PATCH] comments

---
 mandel-core.s | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/mandel-core.s b/mandel-core.s
index f021749..ddcd7fc 100644
--- a/mandel-core.s
+++ b/mandel-core.s
@@ -793,14 +793,18 @@ inner_loop:
     ; h1*256*(h2*256 + l2) + l1*(h2*256 + l2)
     ; h1*h2*256*256 + h1*l2*256 + h2*l1*256 + l1*l2
 
+    ; l1 * l2
     imul8 result, arg1, arg2, xe        ; 81-92 or 52-69
 
+    ; 256 * 256 * h1 * h2
     imul8 result + 2, arg1 + 1, arg2 + 1, xe ; 81-92 or 52-69
 
+    ; 256 * h1 * l1
     imul8 inter, arg1 + 1, arg2, xe     ; 81-92 or 52-69
     add16 result + 1, result + 1, inter ; 20 cyc
     add_carry result + 3                ; 2-7 cyc
 
+    ; 256 * l1 * h2
     imul8 inter, arg1, arg2 + 1, xe     ; 81-92 or 52-69
     add16 result + 1, result + 1, inter ; 20 cyc
     add_carry result + 3                ; 2-7 cyc
@@ -842,10 +846,13 @@ arg2_pos:
         ; h*256*(h*256 + l) + l*(h*256 + l)
         ; h*h*256*256 + h*l*256 + h*l*256 + l*l
 
+        ; l * l
         sqr8 result, arg          ; 19 cyc
 
+        ; 256 * 256 * hl * hl
         sqr8 result + 2, arg + 1  ; 19 cyc
 
+        ; 2 * h * l * 256
         imul8 inter, arg + 1, arg, xe        ; 81-92 / 52-69 cyc
         add16 result + 1, result + 1, inter  ; 20 cyc
         add_carry result + 3                 ; 2-7 cyc