[Coco] Disk Problems

Bruce W. Calkins brucewcalkins at charter.net
Thu Feb 9 20:59:01 EST 2012

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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