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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: thewalrus on August 10, 2006, 10:20:28 AM

Title: How to get two 1.76 floppys to work on a Commodore 4000T?
Post by: thewalrus on August 10, 2006, 10:20:28 AM

I have 2 orginal Commodore German assembled 4000T's which came with the single 880KB drive. By removing the little floppy disk module I have got a single 1.76 drive to work however cannot seem to get two drives to work together with or with out the litle disk module attached.
I have tried changing the jumpers on the mother board as stated in the manual etc but no go. I also tried another floppy cable with the twist. No Luck. Am I missing somthing here. I am at my wits end. Can any body help.

Title: Re: How to get two 1.76 floppys to work on a Commodore 4000T?
Post by: Brian on August 10, 2006, 12:12:37 PM

Have you jumpered the floppydrive itself? Those usually have somethine like D0 D1 D2 D3 or just D0 D1 on them that needs to be set propperly (D0 for DF0 and D1 for DF1).

Title: Re: How to get two 1.76 floppys to work on a Commodore 4000T?
Post by: Noster on August 10, 2006, 12:52:09 PM

Hi,

sorry I cannot help, but I have a similar problem with my A3000T's. I'm not able to connect two HD-floppies to the towers. The only working solution I have found is a single HD-floppy attaches as drive DF1: and a DD-floppy as drive df0:.
If I switch them or try to use two HD-floppies I get errors like DF0:???. I've tried the jumpers on the motherboard and the jumpers of the drives and twisted/non-twisted cable.

So if anybody knows a solution I'm also interested.

Noster

Title: Re: How to get two 1.76 floppys to work on a Commodore 4000T?
Post by: oldman3000 on August 10, 2006, 03:13:39 PM

My 3000T has 2 HD that work, I'm not sure which OS your using but I know that it work with 3.1, 3.5 and 3.9.  They format fine.  I'll check my startup sequence and see if I have any assign statements or not, it has been down for a while and now I bring the system backup, but I have forgotten a few things about it.


Mike
San Diego

Title: Re: How to get two 1.76 floppys to work on a Commodore 4000T?
Post by: Noster on August 10, 2006, 07:35:49 PM

Hi,

> I'm not sure which OS your using but I know that it work with 3.1, 3.5 and 3.9.

I've tested it using OS 2.04, 3.1, and 3.9 without success.
I also tried an (original) 68030, an A3640, and a CyberStormPPC but that doesn't makes any difference.

I have used an original HD-floppy from the A3000T and an original 880k floppy from another A3000T and the only way I get them to work together is jumpering the HD floppy as DF1: and the DD-floppy as DF0: and to set the motherboard jumper to "no DF1:".

In all other cases this combination didn't work. As I tried to replace the DD-floppy with an HD-floppy from an A4000 it didn't work at all.

Noster

Title: Re: How to get two 1.76 floppys to work on a Commodore 4000T?
Post by: Jose on August 10, 2006, 07:39:13 PM

The cables supplied were not suitable to use 2 flopy drives. For more info read this thread: http://www.amiga.org/forums/showthread.php?t=14578

Title: Re: How to get two 1.76 floppys to work on a Commodore 4000T?
Post by: thewalrus on August 10, 2006, 10:18:02 PM

Thanks for the info. Hopefully I will now get the drives to work