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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

2081.0. "Adding a third floppy to an A-500" by SUBSYS::BUSCH (Dave Busch at NKS1-2) Thu Jan 05 1989 17:45

I'd like to add a second external floppy drive to my A-500. The questions I have
are: 1) will the original power supply be able to handle the extra current (I've
got the additional 500k/clock option installed), 2) can I simply "daisy chain"
the drive cables and 3) what do I have to do to the second drive to identify it
as DF2: 

Dave
T.RTitleUserPersonal
Name
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2081.1BAGELS::BRANNONDave BrannonThu Jan 05 1989 18:3313
    the power supply is designed to handle the 512K memory expansion
    and one external disk drive.  Beyond that you're on your own.  Some
    of the third party diskdrive vendors sell a small power supply to
    provide power for a 2nd external drive.  Or there are replacement
    power supplies for the A500 that provide more juice than the CBM
    brick.
    
    The daisy chain will take care of selecting the second drive as
    DF2: (4 select lines, the each drive grabs select line 0, and passes
    the rest on, shifted down by one line)
    
    -Dave
    
2081.23 floppiesSKIWVA::FSCNOFri Jan 06 1989 16:401
    I screwed up. See note 2085 for a reply to this/.