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I have a patch for gas (made to the version released with binutils-2.5.2) which displays a warning when an Org fails (due to trying to org backwards). I am unfamiliar with patch submission protocol, but the patch follows for those who are interested: FILE: write.c FUNCTION: cvt_frag_to_fill ORIGINAL CODE: case rs_org: #ifdef HANDLE_ALIGN HANDLE_ALIGN (fragP); #endif fragP->fr_type = rs_fill; know (fragP->fr_next != NULL); PATCHED CODE: case rs_org: #ifdef HANDLE_ALIGN HANDLE_ALIGN (fragP); #endif know (fragP->fr_next != NULL); if ( fragP->fr_type == rs_org) { if ( fragP->fr_offset < fragP->fr_next->fr_address) as_warn ("Org failed! Org address changed from 0x%08X to 0x%08X\n", fragP->fr_offset, fragP->fr_next->fr_address); } fragP->fr_type = rs_fill; ----------------------------------------------------------------------- John Brooks email: jbrooks@ea.com Technical Director - Coin-Op Division Phone: 415-513-7736 Electronic Arts Fax: 415-513-7449