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Conference hydra::amiga_v1

Title:AMIGA NOTES
Notice:Join us in the *NEW* conference - HYDRA::AMIGA_V2
Moderator:HYDRA::MOORE
Created:Sat Apr 26 1986
Last Modified:Wed Feb 05 1992
Last Successful Update:Fri Jun 06 1997
Number of topics:5378
Total number of notes:38326

966.0. "68010 on A500" by WJG::GUINEAU (W. John Guineau III) Thu Dec 10 1987 14:28


What does it take to replace the 68000 with a 68010 on the Amiga 500?

Joh
T.RTitleUserPersonal
Name		DateLines
966.1Slice of pie!LEDS::ACCIARDIThu Dec 10 1987 15:0629
    Look in the ads in Computer Shopper.  You should be able to find
    a 68010 chip for somewhere between $20.00 and $50.00.
    
    Disassemble the A500 to reveal the motherboard.  The 68000 can be
    removed by gently prying it out with a thin screwdriver or nail
    file.  Gently press in the 68010 (it's pin compatible) and you're
    in business.
    
    I've had a 68010 in my Amiga for almost a year now.  There are only
    two or three compatibility problems...
    
    TextCraft Plus
    Barbarian
    Transformer
    
    TextCraft Plus can be run with a small patch called 'DECIGEL', which
    traps a particular instruction that the 68010 finds offensive. 
    Almost all programmers have had the upward-compatibility point driven
    home by now, so I don't expect to see many problems in the future.
    
    I think that everyone should pop in a 68010 whenever they have the
    machine open.  In general, the speed increase will be modest, 5-8%,
    but in some cases it can reach 50%.  It takes only a few minutes
    to do the upgrade, so go for it.
    
    If you look in LEDS3::USER6:[ACCIARDI.AMIGA] you'll see an archive
    called '68010.arc'.  This is a collection of hints, tips, and includes
    the tiny Decigel program.
966.2thats sounds easy!WJG::GUINEAUW. John Guineau IIIThu Dec 10 1987 15:3817
>    Look in the ads in Computer Shopper.  You should be able to find
>    a 68010 chip for somewhere between $20.00 and $50.00.
    
    
Already have one!

I heard there was some patch to (workbench?) that can be done in the startup
file to "fix" the incompatability (Apparently the 68010 interrupt stack call
frame differs from the 68000)


>    If you look in LEDS3::USER6:[ACCIARDI.AMIGA] you'll see an archive

Got it! Thanks!
John