[Coco] Disk Problems

John Odom forgerii at yahoo.com
Thu Feb 9 21:17:34 EST 2012


It can be dirt other than oxidation.
 
John L. Odom
Chemist/Microscopist


________________________________
 From: K. Pruitt <pruittk at adelphia.net>
To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com> 
Sent: Thursday, February 9, 2012 9:08 PM
Subject: Re: [Coco] Disk Problems
 
That's exactly why I thought it was the rom chip as well.  Turns out it was oxidized
contacts.  Why it worked okay under OS9 but not under RSDOS is a mystery to
me.  I also didn't know that gold contacts could oxidize, but apparently
they can to some degree.

----- Original Message ----- From: "Bruce W. Calkins" <brucewcalkins at charter.net>
To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Sent: Thursday, February 09, 2012 5:59 PM
Subject: Re: [Coco] Disk Problems


> I do know that OS-9 does not use any ROM once you get past the DOS command. This has me thinking you may have a problem with your Tandy ROM chip.  Try reseating it making sure all pins are lined up correctly.
> 
> Bruce W.
> 
> ====================
> 
> ----- Original Message ----- From: "K. Pruitt"
> 
>> I'm having a disk problem and figured I'd ask if anybody here has any idea on what may be going on.  Under OS9 Level II I am having no disk problems at all.  I can read and write without problem.  Under RSDOS I can read the disk with no problem but cannot write to the disk.  If I try and save to disk it appears to save, but the file is not actually present on the disk. If I turn verify on it errors out instead of pretending to write to disk. DSKINI always results in an I/O error.  This problem occurs on both floppy drives in my system.
>> 
>> My disk controller is a disto super controller 2 with a tandy rom chip in it.  Does OS9 utilize that rom chip at all?   I double checked the inside of the pack and everything is plugged in correctly.  I'm the original owner of all the equipment involved.  It did work the last time I used it... which was like 20 years ago.
> 
> 
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