Listing 47

asm_files/list-0047.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 47
+; ========================================================================
+
+bits 16
+
+add bx, 30000
+add bx, 10000
+sub bx, 5000
+sub bx, 5000
+
+mov bx, 1
+mov cx, 100
+add bx, cx
+
+mov dx, 10
+sub cx, dx
+
+add bx, 40000
+add cx, -90
+
+mov sp, 99
+mov bp, 98
+cmp bp, sp

asm_files/list-0047.txt

@@ -0,0 +1,22 @@
+--- test\listing_0047_challenge_flags execution ---
+add bx, 30000 ; bx:0x0->0x7530 flags:->P 
+add bx, 10000 ; bx:0x7530->0x9c40 flags:P->SO 
+sub bx, 5000 ; bx:0x9c40->0x88b8 flags:SO->PAS 
+sub bx, 5000 ; bx:0x88b8->0x7530 flags:PAS->PO 
+mov bx, 1 ; bx:0x7530->0x1 
+mov cx, 100 ; cx:0x0->0x64 
+add bx, cx ; bx:0x1->0x65 flags:PO->P 
+mov dx, 10 ; dx:0x0->0xa 
+sub cx, dx ; cx:0x64->0x5a flags:P->PA 
+add bx, 40000 ; bx:0x65->0x9ca5 flags:PA->PS 
+add cx, -90 ; cx:0x5a->0x0 flags:PS->CPAZ 
+mov sp, 99 ; sp:0x0->0x63 
+mov bp, 98 ; bp:0x0->0x62 
+cmp bp, sp ; flags:CPAZ->CPAS 
+
+Final registers:
+      bx: 0x9ca5 (40101)
+      dx: 0x000a (10)
+      sp: 0x0063 (99)
+      bp: 0x0062 (98)
+   flags: CPAS