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Yes there is. It is possible to change the assembler configuration to except unqualified register names. I believe this is the default for target formats where C symbols are prefixed with an underscore. For formats where there is no prefix on C symols, avoiding action needs to be taken so a C variable called a7 (for example) is not confused with a register.... This is done by configuring the assembler to arequire a % prefix on all register names, and the C compiler to use one. If you want, you could rebuild the assembler with gas/config/xxxx.h containing #define REGISTER_PREFIX_OPTIONAL 1 for example see gas/configure tc-m68k.h etc. REMEMBER, such an assembler would be useless when used with gcc (it would compiler because the %a7 syntax would be accepted, but if anyone used a variable name like d1.... An alternative, nasty, method is to use coff format, but make the compiler use an underscore prefix, and the assembler accept an optional register prefix, but then your object format is non-standard. I'm currently trying this - the theory is that the resulting object file will be easier to convert to i695 for use with XRAY debugger, but I haven't finished it yet. Good Luck Mark Mark S. Phillips ESN 742 2461 msp@nortel.co.uk Tel. +44 1279 402461 On Sun, 27 Apr 1997, David Greeson wrote: > Hi, > > Our current assembler uses the following style, > > move.l D1,-(A7) * displacements to arguments must change > > but I had to change the line to this to get it to compile > > move.l %D1,-(%A7) /* displacements to arguments must change */ > > We have thousands of line of assembler code. Is there anyway to > make m68k-coff-as accept the old style? > > David > > >