DOCUMENT:Q79829 04-MAY-2001 [masm] TITLE :FIX: /Zm and $-Constant Produces A2075 in MASM 6.0 PRODUCT :Microsoft Macro Assembler PROD/VER::6.0 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Macro Assembler (MASM), version 6.0 ------------------------------------------------------------------------------- SYMPTOMS ======== In the Microsoft Macro Assembler (MASM) version 6.0, the following error message may be produced A2075: jump destination too far : by xxxxx byte(s) when using the /Zm option, the MASM driver with MASM 6.0, or OPTION M510. When MASM 5.1 compatibility is not used or MASM 5.1 is used, the code assembles correctly. CAUSE ===== This behavior is caused by using the current address operator, $, minus a constant (for example, jmp $-5), and the MASM driver with MASM 6.0, OPTION M510, or the /Zm switch when assembling. RESOLUTION ========== Use a label instead of the current address operator or assemble without the MASM 5.1 switch. STATUS ====== Microsoft has confirmed this to be a problem in MASM version 6.0. This problem was corrected in MASM version 6.0a. MORE INFORMATION ================ The /Zm switch is the MASM 5.1 compatibility switch in MASM 6.0. The MASM driver calls ML with the /Zm option in MASM 6.0. OPTION M510 is a directive that specifies MASM 5.1 compatibility. Sample Code ----------- ; Assembly options need: /Zm DOSSEG .MODEL small .STACK 4096 .DATA .CODE start: mov al,5h here: dec al jnz $-2 ; This line causes the A2075 error. ;jnz here ; Uncomment this line and comment out mov ax,4c00h ; jnz $-2 to get the code to assemble int 21h ; correctly. END start Additional query words: 6.00 5.10 buglist6.00 fixlist6.00a ====================================================================== Keywords : Technology : kbMASMsearch kbAudDeveloper kbMASM600 Version : :6.0 Solution Type : kbfix ============================================================================= 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.