DOCUMENT:Q24965 06-MAY-2001 [masm] TITLE :Jump to Absolute Address PRODUCT :Microsoft Macro Assembler PROD/VER::1.25,1.27,3.0x,4.0,5.0,5.1,5.1a,6.0,6.0a,6.0b OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Macro Assembler (MASM), versions 1.25, 1.27, 3.0x, 4.0, 5.0, 5.1, 5.1a, 6.0, 6.0a, 6.0b ------------------------------------------------------------------------------- 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- 2. 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 : Technology : kbMASMsearch kbAudDeveloper kbMASM510 kbMASM600 kbMASM125 kbMASM127 kbMASM30xSearch kbMASM400 kbMASM500 kbMASM600a kbMASM510a kbMASM600b Version : :1.25,1.27,3.0x,4.0,5.0,5.1,5.1a,6.0,6.0a,6.0b ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2001.