[Coco] NitrOS-9 on a 128k Coco-3

Kandur k at qdv.pw
Thu Jun 19 11:45:11 EDT 2014


Have done this, but don't know if the drive is spinning REALLY at 300 rpm.
Anyway, my 28 backup disks are marked as:
"OS-9, 160T, 96TPI 89-1-9"
How would you dmode this drive?
Don't think a 720k setup would work with it.
Am I wrong?


Kandur

Thursday, June 19, 2014, 12:47:20 AM, you wrote:
> On Wednesday 18 June 2014 23:12:36 Kandur did opine
> And Gene did reply:
>> Thanks Gene,
>> I got the service manual and the jumper settings for that drive.
>> I think, I found the speed select jumper.
>> http://qdv.pw/coco/blog/2014/06/19/panasonic-ju-475-4-5-14-fd/

> The jumper on PH, move it to 1M.  You have it
> right if you can dmode the 
> descripter for 50 cyl's, 2 sid, and format it
> ok. It will then be a 720k 
> disk drive on the coco.


>> First I couldn?t boot OS-9 from a 3.5" drive, because it's drive select
>> was soldered to /d1, took it apart and managed to change it to /d0.
>> http://qdv.pw/coco/blog/2014/06/19/changed-a-3-5-drives-drive-select-t
>> o-d0-from-d1/

> I've also done that, but some drives are even
> simpler and stuck as /d1.

> [...]

> Cheers, Gene Heskett
> -- 
> "There are four boxes to be used in defense of liberty:
>  soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> Genes Web page
> <http://geneslinuxbox.net:6309/gene>
> US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS


More information about the Coco mailing list