From 3ca4059c44de8f49a2c7a968de711ee4b91eb8d6 Mon Sep 17 00:00:00 2001
From: Joseph Ferano <joseph@ferano.io>
Date: Fri, 21 Mar 2025 20:47:34 +0700
Subject: [PATCH] Listing 52

---
 asm_files/list-0052.asm | 36 +++++++++++++++++++++++++++++++++++
 asm_files/list-0052.txt | 42 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 78 insertions(+)
 create mode 100644 asm_files/list-0052.asm
 create mode 100644 asm_files/list-0052.txt

diff --git a/asm_files/list-0052.asm b/asm_files/list-0052.asm
new file mode 100644
index 0000000..189ed32
--- /dev/null
+++ b/asm_files/list-0052.asm
@@ -0,0 +1,36 @@
+; ========================================================================
+;
+; (C) Copyright 2023 by Molly Rocket, Inc., All Rights Reserved.
+;
+; This software is provided 'as-is', without any express or implied
+; warranty. In no event will the authors be held liable for any damages
+; arising from the use of this software.
+;
+; Please see https://computerenhance.com for further information
+;
+; ========================================================================
+
+; ========================================================================
+; LISTING 52
+; ========================================================================
+
+bits 16
+
+mov dx, 6
+mov bp, 1000
+
+mov si, 0
+init_loop_start:
+	mov word [bp + si], si
+	add si, 2
+	cmp si, dx
+	jnz init_loop_start
+
+mov bx, 0
+mov si, 0
+add_loop_start:
+	mov cx, word [bp + si]
+	add bx, cx
+	add si, 2
+	cmp si, dx
+	jnz add_loop_start
diff --git a/asm_files/list-0052.txt b/asm_files/list-0052.txt
new file mode 100644
index 0000000..dd7fbd5
--- /dev/null
+++ b/asm_files/list-0052.txt
@@ -0,0 +1,42 @@
+--- test\listing_0052_memory_add_loop execution ---
+mov dx, 6 ; dx:0x0->0x6 ip:0x0->0x3 
+mov bp, 1000 ; bp:0x0->0x3e8 ip:0x3->0x6 
+mov si, 0 ; ip:0x6->0x9 
+mov word [bp+si], si ; ip:0x9->0xb 
+add si, 2 ; si:0x0->0x2 ip:0xb->0xe 
+cmp si, dx ; ip:0xe->0x10 flags:->CPAS 
+jne $-7 ; ip:0x10->0x9 
+mov word [bp+si], si ; ip:0x9->0xb 
+add si, 2 ; si:0x2->0x4 ip:0xb->0xe flags:CPAS-> 
+cmp si, dx ; ip:0xe->0x10 flags:->CAS 
+jne $-7 ; ip:0x10->0x9 
+mov word [bp+si], si ; ip:0x9->0xb 
+add si, 2 ; si:0x4->0x6 ip:0xb->0xe flags:CAS->P 
+cmp si, dx ; ip:0xe->0x10 flags:P->PZ 
+jne $-7 ; ip:0x10->0x12 
+mov bx, 0 ; ip:0x12->0x15 
+mov si, 0 ; si:0x6->0x0 ip:0x15->0x18 
+mov cx, [bp+si] ; ip:0x18->0x1a 
+add bx, cx ; ip:0x1a->0x1c 
+add si, 2 ; si:0x0->0x2 ip:0x1c->0x1f flags:PZ-> 
+cmp si, dx ; ip:0x1f->0x21 flags:->CPAS 
+jne $-9 ; ip:0x21->0x18 
+mov cx, [bp+si] ; cx:0x0->0x2 ip:0x18->0x1a 
+add bx, cx ; bx:0x0->0x2 ip:0x1a->0x1c flags:CPAS-> 
+add si, 2 ; si:0x2->0x4 ip:0x1c->0x1f 
+cmp si, dx ; ip:0x1f->0x21 flags:->CAS 
+jne $-9 ; ip:0x21->0x18 
+mov cx, [bp+si] ; cx:0x2->0x4 ip:0x18->0x1a 
+add bx, cx ; bx:0x2->0x6 ip:0x1a->0x1c flags:CAS->P 
+add si, 2 ; si:0x4->0x6 ip:0x1c->0x1f 
+cmp si, dx ; ip:0x1f->0x21 flags:P->PZ 
+jne $-9 ; ip:0x21->0x23 
+
+Final registers:
+      bx: 0x0006 (6)
+      cx: 0x0004 (4)
+      dx: 0x0006 (6)
+      bp: 0x03e8 (1000)
+      si: 0x0006 (6)
+      ip: 0x0023 (35)
+   flags: PZ