(as.info) Machine Dependencies

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 Machine Dependent Features
 **************************
 
    The machine instruction sets are (almost by definition) different on
 each machine where `as' runs.  Floating point representations vary as
 well, and `as' often supports a few additional directives or
 command-line options for compatibility with other assemblers on a
 particular platform.  Finally, some versions of `as' support special
 pseudo-instructions for branch optimization.
 
    This chapter discusses most of these differences, though it does not
 include details on any machine's instruction set.  For details on that
 subject, see the hardware manufacturer's manual.
 

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* AMD29K-Dependent            AMD 29K Dependent Features
 
* ARC-Dependent               ARC Dependent Features
 
* ARM-Dependent               ARM Dependent Features
 
* D10V-Dependent              D10V Dependent Features
 
* D30V-Dependent              D30V Dependent Features
 
* H8/300-Dependent            Hitachi H8/300 Dependent Features
 
* H8/500-Dependent            Hitachi H8/500 Dependent Features
 
* HPPA-Dependent              HPPA Dependent Features
 
* ESA/390-Dependent           IBM ESA/390 Dependent Features
 
* i386-Dependent              Intel 80386 Dependent Features
 
* i960-Dependent              Intel 80960 Dependent Features
 
* M68K-Dependent              M680x0 Dependent Features
 
* MIPS-Dependent              MIPS Dependent Features
 
* SH-Dependent                Hitachi SH Dependent Features
 
* PJ-Dependent                picoJava Dependent Features
 
* Sparc-Dependent             SPARC Dependent Features
 
* V850-Dependent              V850 Dependent Features
 
* Z8000-Dependent             Z8000 Dependent Features
 
* Vax-Dependent               VAX Dependent Features
 

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