[Coco] 8" Disks and NitroOS9

[Bill Gunshannon]

Can't see how that would work as it should fail trying to format

those last 3 tracks.


bill


On 03/16/2018 04:17 PM, David Gettle wrote:
> Just my $0.02, I used the d1_80d.dd discriptor from the OS-9 level 2 ver
> 2.00.00 config disk (or was it the OS-9 Level1 ver 2.00.01 config disk?)
> intended for 8 inch drives with 3.5 inch disks for years with no problem. I
> don't remember the dmode settings, but the settings in that file should
> work.
>
> I haven't run regular OS-9 in years, so pardon my lack of being certain
> which disk I got the file from.
>
> On Fri, Mar 16, 2018 at 3:30 PM, Mark Marlette <mmarlette at frontiernet.net>
> wrote:
>
>> Bill,
>> A 8" disk had a transfer rate of 500Kbs, going from memory here but there
>> was no standard CoCo disk controller that did that data rate.
>> You could hack the old 3029(??), I did one here but was like building a
>> new card.
>> The data transfer rate is the same as what was used in the small 3.5"
>> disk, so the CoCo could do HD transfers.
>> Regards, Mark Marlette
>>   http://www.cloud9tech.com
>> mark at cloud9tech.com
>> mark at gamecamaddict.com
>>
>>        From: Bill Gunshannon <bill.gunshannon at hotmail.com>
>>   To: "coco at maltedmedia.com" <coco at maltedmedia.com>
>>   Sent: Friday, March 16, 2018 2:19 PM
>>   Subject: Re: [Coco] 8" Disks and NitroOS9
>>
>>
>> That one was easy.  I was much more concerned about the ones like:
>>
>> typ, dns, wpc and rwc.
>>
>>
>> bill
>>
>>
>> On 03/16/2018 02:05 PM, David Ladd wrote:
>>> Bill,
>>>
>>> for 77 tracks should be:
>>>
>>> dmode /d1 cyl=4D
>>>
>>> replace /d1 with the drive descriptor you have the 8" drive configured
>> for.
>>> +-----------------------------------------------------------
>> ------------+
>>> | David Ladd a.k.a. PacoOtaktay a.k.a. Drencor                          |
>>> | YouTube: http://www.youtube.com/user/PacoOtaktay                     |
>>> | YouTube Gaming Live: https://gaming.youtube.com/user/PacoOtaktay/live
>> |
>>> | Websites: http://dwladd.com     &    http://www.theterrorzone.com   |
>>> | G+:  https://plus.google.com/113262444659438038657                   |
>>> | G+:  https://plus.google.com/+DavidLaddPacoOtaktay                   |
>>> |                                                                      |
>>> | Do you have your CoCo 3 yet?                                          |
>>> +-----------------------------------------------------------
>> ------------+
>>>
>>> On Fri, Mar 16, 2018 at 12:55 PM, Bill Gunshannon <
>>> bill.gunshannon at hotmail.com> wrote:
>>>
>>>> First, thanks everyone for the help with cases.  I got one for
>>>>
>>>> my COCOSDC and one for a Glenside IDE (I'll need more of
>>>>
>>>> them eventually and probably the SDC Case as well as I hope
>>>>
>>>> to get a couple more SDC's too).
>>>>
>>>>
>>>> Now my next project.  Has anyone here used 8" disks with
>>>>
>>>> NitrOS9?  I have an Tandon 8" hooked up to my COCO3 using
>>>>
>>>> the Floppy Adapter from Dbit.com (John does great work, the
>>>>
>>>> power board for the Tandon is also one of his projects.)  I was
>>>>
>>>> able to DSKINI a disk and write and read back a BASIC program
>>>>
>>>> with it.  But that was just as a default COCO floppy.  Now I want
>>>>
>>>> to get it working as a true 8" disk with access to all 77 tracks.
>>>>
>>>> Anybody tried this?  My first attempt to format a disk using the
>>>>
>>>> default DMODE which would be the same as under ECB failed.
>>>>
>>>> Does anyone have DMODE parameters that are known to work
>>>>
>>>> with real 8" disks?
>>>>
>>>>
>>>> bill
>>>>
>>>>
>>>>
>>>> --
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>>>>
>>
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>>
>>
>>
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