PerformanceAwareProgramming/part1/listing_0039_more_movs.asm

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2023-03-05 14:53:57 +00:00
; ========================================================================
;
; (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 39
; ========================================================================
bits 16
; Register-to-register
mov si, bx
mov dh, al
; 8-bit immediate-to-register
mov cx, 12
mov cx, -12
; 16-bit immediate-to-register
mov dx, 3948
mov dx, -3948
; Source address calculation
mov al, [bx + si]
mov bx, [bp + di]
mov dx, [bp]
; Source address calculation plus 8-bit displacement
mov ah, [bx + si + 4]
; Source address calculation plus 16-bit displacement
mov al, [bx + si + 4999]
; Dest address calculation
mov [bx + di], cx
mov [bp + si], cl
mov [bp], ch