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Conference 7.286::atarist

Title:Atari ST, TT, & Falcon
Notice:Please read note 1.0 and its replies before posting!
Moderator:FUNYET::ANDERSON
Created:Mon Apr 04 1988
Last Modified:Tue May 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:1433
Total number of notes:10312

433.0. "TOS 1.4 booted from harddisk ?." by UTRTSC::BRANCH_ADAM (nothing is impossible......) Tue Mar 21 1989 10:59

    Hello all,
    
    Is there somebody out there who tried to do same as i did,
    ie. booting TOS 1.4 directly from harddisk.
    
    I wrote a little program in assembler which is started from the
    auto folder on harddisk partition C.
    It then loads a patched version of the tos.img file.
    The patch includes the removal of the relocation part in the startup code.
    Which is $100 bytes long.
                                                                             
    The relocation is then done by the loader program which relocates
    the code to address $AD00.
    Then tos 1.4 is started at address $AD00.
    
    But before the relocation starts I have to set the Supervisor mode
    and the interrupt level to 7 to disable the uninitialized interrupts.
    However at this moment no debugger program can keep control of the
    process.
    I think it is during the relocation that the system traps through
    `illegal command` vector and the systems hangs hopeless.
     
    Does anybody have an idea how to solve this problem, or managed
    to do same as i want to do in another way ??.
    
    Regards,
    
    
    Arthur.                    
T.RTitleUserPersonal
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433.1YES ,A PATCH EXISTS.HAMSUP::PETERSENWed Mar 22 1989 05:405
    I'VE GOT A PATCH.
    THIS PATCH FOR THE DISKVERSION OF THE TOS 1.4 MAKES IT POSSIBLE
    TO BOOT THE TOS.IMG FILE FROM HARDDISK.
    I THINK IT IS PUBLIC DOMAIN, BUT I'M NOT SHURE.
    MFG KLAUS PETERSEN    VAXMAIL: HAMSUP::PETERSENE