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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

4003.0. "AMY Problems with disk." by MUSKIE::GAINES () Thu Aug 09 1990 14:44

    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.R	Title	User	Personal Name	Date	Lines
4003.1	Check cables	CSSE32::SMITH	Reality, just a visible imagination?	`Thu Aug 09 1990 15:01`	5
	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
4003.2	yes and no	MUSKIE::GAINES		`Thu Aug 09 1990 17:18`	5
	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
4003.3	Disk Formatted??	SALEM::LEIMBERGER		`Fri Aug 10 1990 05:52`	11
	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
4003.4	working now, 1 more question.	CARP::GAINES		`Mon Aug 13 1990 11:21`	20
	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
4003.5		FRSOLD::ZIMMERMANN		`Tue Aug 14 1990 04:13`	11
	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 ====
4003.6	Latch Plus Jumper	CSC32::A_ANDERSON	DTN 592-4170 NSU/VAX	`Tue Aug 14 1990 18:23`	7
	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
4003.7		WJG::GUINEAU		`Wed Aug 15 1990 08:45`	11
	> 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
4003.8	wife is a PC widow	CSC32::A_ANDERSON	DTN 592-4170 NSU/VAX	`Wed Aug 15 1990 19:04`	5
	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
4003.9	Jumper Jumper...	SDOGUS::WILLIAMS	TOPGUN	`Fri Aug 17 1990 04:14`	4
	The Jumper should be J103. Move it to the unconnected pin. TOPGUN