transparent translation registers

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Article #49566

#49566

From: Steve Morris
Date: Thu, 06 Jan 1994 14:27

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        I am using gcc version cygnus-2.2.3 from VxWorks 5.1, cross-compiling to 
        68030 and 68040 boards.
        
        I need to use the transparent translation registers directly. For the 
        68040 boards I have no problems setting DTT0 and DTT1.
        
            /* read/write enable, cache disable $40000000-$77ffffff */
            #define DTT0_VALUE  0x403fc060
            asm( "movec     %0,dtt0" : : "r" (DTT0_VALUE) ) ;
        
        However the equivalent instruction for the 68030 registers TT0 and TT1 
        does not seem to assemble. 
        
            /* read/write enable, cache disable $40000000-$77ffffff */
            #define TT0_VALUE  0x403f8507
            asm( "movem     %0,tt0" : : "r" (TT0_VALUE) ) ;
        
        This results in "operands mismatch"
        
        Can anyone help me?
        
        Steve Morris
        
        
----------------------------------------------------------------------
        
Steve Morris                        voice: (972)-8-381055 
Software Team Manager                      (972)-8-381818 
Indigo Graphic Systems              Fax:   (972)-8-408091
P.O. Box 150, Rehovot, Israel       e-mail: morriss@smtplink.indigo.hellnet.org
        
----------------------------------------------------------------------

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From: morriss@smtplink.INdigo.hellnet.ORG (Steve Morris)
Newsgroups: gnu.gcc.help
Subject: transparent translation registers
Date: 6 Jan 1994 09:27:56 -0500
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