Microsoft KB Archive/24965

= Jump to Absolute Address =

Article ID: 24965

Article Last Modified on 10/22/2003

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APPLIES TO


 * Microsoft Macro Assembler 1.25
 * Microsoft Macro Assembler 1.27
 * Microsoft Macro Assembler 4.0
 * Microsoft Macro Assembler 4.0
 * Microsoft Macro Assembler 5.0
 * Microsoft Macro Assembler 5.1 Standard Edition
 * Microsoft Macro Assembler 5.1a
 * Microsoft Macro Assembler 6.0 Standard Edition
 * Microsoft Macro Assembler 6.0a
 * Microsoft Macro Assembler 6.0b

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This article was previously published under Q24965



SUMMARY
There are two methods of coding a jump to an absolute address. These methods are as follows:
 * 1) Use AT to create a segment template beginning at an absolute address. Then, using ORG, a label can be assigned at a specific offset. -or-


 * 1) Initialize a double word variable to the specific address.



MORE INFORMATION
The following code demonstrates both methods: ; Assembly options needed: none

ASEG SEGMENT BYTE AT 0000H

ORG 100 far_label LABEL FAR

ASEG      ENDS

DATA  SEGMENT WORD 'DATA'

FAR_VAR DW  100,0

DATA        ENDS

CODE  SEGMENT BYTE 'CODE' ASSUME CS:CODE, DS:DATA

start: mov ax, data mov ds, ax

JMP far_label         ;This is the first type of jump.

JMP DWORD PTR far_var ;This is the second type of jump. CODE  ENDS

END start

Additional query words: 1.25 1.27 3.0x 4.00 5.00 5.10 5.10a 6.00 6.00a 6.00b

Keywords: KB24965

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