[Search for users] [Overall Top Noters] [List of all Conferences] [Download this site]

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

4003.0. "AMY Problems with disk." by MUSKIE::GAINES () Thu Aug 09 1990 17:44

    Well I've got another hardware question here. I recently bought
    an AMY 2000 with hardcard/hardrive/bridgeboard/IBM internal 5 1/4
    and amiga 3 1/2 inch disk.
    
    It also came with a multisync monitor, which I've already zapped.
    its going in for repair soon. It seemed to always have a reddish
    background, I tried adjusting and managed to zap it! I suspect
    the reddish tint was most likely a ground problem with the homemade
    video cable... $#%^^#!
    
    Anyhow heres a quickie someone can probably answer. My Amiga 3 1/2
    inch internal drive is not working. The system does not see it.
    When I come up to workbench the only icon's present are the two
    hard disks and the ram disk. No floppy... I tried plugging my
    old 3 1/2 exteranl floppy into the external drive connector, it
    is not seen either. I also have another (spare) internal 3 1/2 
    disk and upon installing it the same occurs, no floppy... Most
    likely the problem is the chip, which one is this? Or could it
    be something else... I'm not to comfortable messing around since
    I zapped my terminal, but if some has a good recommendation short
    of taking it to the dealer, please give me some clues.
    
    Thanks
    M. Gaines
T.RTitleUserPersonal
Name
DateLines
4003.1Check cablesCSSE32::SMITHReality, just a visible imagination?Thu Aug 09 1990 18:015
    Perhaps you should check that the power and drive cable are connected
    properly on the drive and the mother board.  If ok then it's likely the
    floppy controller IC.  Does the drive LED come on?
    
    ...Ed
4003.2yes and noMUSKIE::GAINESThu Aug 09 1990 20:185
    Yes Ed. Now that you mention it it does on the internal drive. But
    always returns "DF0:BAD". The external drive Does not get an LED
    ti light. It does nothing. Hmmmmmm.
    
    M. Gaines
4003.3Disk Formatted??SALEM::LEIMBERGERFri Aug 10 1990 08:5211
   The internal disk drive will always return DF0:BAD if a unformatted
    disk is inserted. Did you insert a disk,and then when you get the
    df0:bad icon on the workbench, select initalize from the workbench
    menu? Does your external drive have a disable switch on it? Some
    come with a switch that allow you to disable the disk to spare 
    memory on the system. If you have a switch flip it and reoot.
    	If you were to run crossdos you would get DF0:bad,and an 
    icon for DI0: if an ibm disk is inserted,and a DI0:bad, with an
    icon for DF0: when an amiga disk is inserted. This is said to be
    going away with 2.0 of the OS.
    							bill
4003.4working now, 1 more question.CARP::GAINESMon Aug 13 1990 14:2120
    Well this probelm is solved! Ed, the DF0:bad error would occurr 
    on known formatted disks. So this was not the problem. Apparently
    the 1st internal disk is slightly different than 2nd drives installed.
    The connectors were topsy turvey on the original 1st than on the 
    2nd. Anyhow I found that if I disconnected the original disk that
    I could read from my external drive fine. If I connected the controller
    cable back up at anytime to the internal disk the external disk would
    not function.
    
    I took my spare internal floppy and connected it and disconnected the 
    original! Looks fine, I can use the newly installed internal and
    external floppy ok. The origanl floppy is certainly bad...
    
    On my Amiga 500 the internal drive was DF0 and the external was
    DF1. Now with my 2000 the internal is DF0 and the external is
    DF2. Why? and how do I get the external to show up as DF1?
    
    Regards
    
    	M. Gaines
4003.5FRSOLD::ZIMMERMANNTue Aug 14 1990 07:1311
    The 2000 has a built-in drive-logic for DF1: on the motherboard.
    If you connect a drive on the external connector it will show up
    as DF2:. If you connect a drive inside it will show up as DF1:
    For an external drive you also need an external drive logic/diskchange-
    "emulator". I grabbed an old NEC1036a added the external logic and it
    works fine.
    Have a look at the original DEVS:MountList on your AmigaDOS-Disk.
    It shows how to "map" unit 2 on the name DF1:
    
    Ralf
    ====
4003.6Latch Plus JumperCSC32::A_ANDERSONDTN 592-4170 NSU/VAXTue Aug 14 1990 21:237
    Addendum to .5  The drive logic for DF1 on the mother board is disabled
    by a missing jumper to keep the latch cir from responding when the drive 
    does not exits.  Its on the prints right next to the Gary chip (Floppy
    section) and floppy connector.  Can not remember the page sorry.
    
    Alan 
    
4003.7WJG::GUINEAUWed Aug 15 1990 11:4511
>    Addendum to .5  The drive logic for DF1 on the mother board is disabled
>    by a missing jumper to keep the latch cir from responding when the drive 
>    does not exits.  Its on the prints right next to the Gary chip (Floppy
>    section) and floppy connector.  Can not remember the page sorry.
    
AH HA!  Thanks Alan!

I've been trying to get a second floppy on the internal floppy connection in
my 2500 and it never see's it (works fine as DF0: minus the diskchange...)

john
4003.8wife is a PC widowCSC32::A_ANDERSONDTN 592-4170 NSU/VAXWed Aug 15 1990 22:045
    Just got a 2000 my wife will be glad to hear all the time I spent alone
    with it was worth it to someone.
    
    Alan
    
4003.9Jumper Jumper...SDOGUS::WILLIAMSTOPGUNFri Aug 17 1990 07:144
    The Jumper should be J103.  Move it to the unconnected pin.
    
    TOPGUN