[Coco] OS-9 DS floppy config - SUCCESS!

Bob Devries devries.bob at gmail.com
Tue Aug 10 21:28:50 EDT 2010


Hi Chad,

the "standard" OS9 level 1 disk device descriptor has its stepping rate at 
offset $14. The options are 0=30ms, 1=20ms,2=12ms,3=6ms.

Pages 39 and 40 of the OS9 Technical Information manual refers.

Hope that helps
Regards, Bob Devries
Dalby, QLD, Australia

----- Original Message ----- 
From: "Chad H" <chadbh74 at hotmail.com>
To: "'CoCoList for Color Computer Enthusiasts'" <coco at maltedmedia.com>
Sent: Wednesday, August 11, 2010 8:58 AM
Subject: Re: [Coco] OS-9 DS floppy config - SUCCESS!


> You know, the OS-9 Level 1 v2.0.0 DSK image I had had a script on it 
> called "DISKFIX" and I had no idea what it was for.  Now I do, the 
> comments are not in it, but the commands and hex codes are identical.  Go 
> figure.  Anywhoo, I went back and used the modded CCDISK instead of the 
> RB1773 along with the original D0 & D1 and it booted good.  Then I used 
> DMODE from NitrOS9 boot to note the D0 and D1 settings.  I booted under 
> the modded OS9 and applied the settings to match but it started acting 
> funny.  I realized OS9 and NitrOS9 must not have their D0/D1 in the same 
> format.  In NitrOS9, it has STP=03.  Setting this under the OS-9 CCDISK 
> screwed up the 6ms stepping.   I put it back to STP=0 and all is good.
>
> What did I gain?  2 ram pages.  It went up to 162 free at boot.  I guess 
> it was a success though.
>
> - Chad
>
> -----Original Message-----
> From: coco-bounces at maltedmedia.com [mailto:coco-bounces at maltedmedia.com] 
> On Behalf Of Bob Devries
> Sent: Monday, August 09, 2010 1:50 AM
> To: CoCoList for Color Computer Enthusiasts
> Subject: Re: [Coco] OS-9 DS floppy config - SUCCESS!
>
> Hi Chad,
>
> the number of tracks is set in the device descriptor, not the driver. The
> same is true for the stepping rate. If Level 1 has the DMODE utility, you
> can use that to change them.
>
> Of course, that was/is true also of the double-sided working which Tandy
> ignored :(
>
> Regards, Bob Devries
> Dalby, QLD, Australia
>
> ----- Original Message ----- 
> From: "Chad Hendon" <chadbh74 at hotmail.com>
> To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
> Sent: Monday, August 09, 2010 4:35 PM
> Subject: Re: [Coco] OS-9 DS floppy config - SUCCESS!
>
>
>> Wow.. that's very interesting.  Does it also set to 40 tracks and 6ms
>> stepping?  If so, I might go back and try rebuilding my disk with the
>> CCDISK instead of the RB1773 to see if it gives me any extra free ram at
>> boot.
>>
>> Connected by MOTOBLUR™ on T-Mobile
>>
>> -----Original message-----
>> From: Bob Devries <devries.bob at gmail.com>
>> To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
>> Sent: Mon, Aug 9, 2010 01:47:15 GMT+00:00
>> Subject: Re: [Coco] OS-9 DS floppy config - SUCCESS!
>>
>> Hi all,
>>
>> for anyone who is interested, I found the original patch file to modify
>> CCDISK from the Level 1 V2.0.0 distribution to read/write/format
>> double-sided disks. It was featured in The Rainbow October 1988, pp 156. 
>> I
>> don't have that issue now, so I can't say who wrote it (unless I download
>> it from maltedmedia)
>>
>> * Patches Level I Ver. 2
>> * CCDisk to read, write
>> * and format both single
>> * and double sided disks
>> * Rainbow, Oct '88, p 157
>> t
>> tmode .1 -pause
>> save /d0/ccdisk ccdisk
>> debug
>> lccdisk
>> . .+7
>> =80
>> $load /d0/ccdisk
>> lccdisk
>> . .+3
>> =82
>> lccdisk
>> . .+1c9
>> =16
>> =01
>> =84
>> lccdisk
>> . .+1f8
>> =5f
>> =17
>> =01
>> =76
>> lccdisk
>> . .+2ae
>> =e6
>> =c9
>> =00
>> =a9
>> =16
>> =00
>> =8c
>> =12
>> =23
>> =02
>> lccdisk
>> . .+2dd
>> =40
>> =12
>> =12
>> =12
>> =17
>> =00
>> =90
>> . .+3
>> =5f
>> =16
>> =00
>> =81
>> lccdisk
>> . .+341
>> =a6
>> =07
>> =85
>> =01
>> =26
>> =02
>> =ca
>> =40
>> =a6
>> =09
>> =81
>> =15
>> =16
>> =ff
>> =66
>> =a6
>> =88
>> =10
>> =85
>> =01
>> =27
>> =0e
>> =64
>> =e4
>> =24
>> =0a
>> =a6
>> =c9
>> =00
>> =a9
>> =8a
>> =40
>> =a7
>> =c9
>> =00
>> =a9
>> =35
>> =02
>> =81
>> =15
>> =16
>> =fe
>> =61
>> =ea
>> =a8
>> =22
>> =16
>> =ff
>> =01
>> =cb
>> =10
>> =ea
>> =a8
>> =22
>> =34
>> =02
>> =17
>> =fe
>> =f7
>> =35
>> =02
>> =39
>> q
>> del /d0/ccdisk
>> save /d0/temp ccdisk
>> verify u</d0/temp >/d0/ccdisk
>> del temp
>> tmode .1 pause
>> -t
>>
>> * EOF *
>>
>> ----- Original Message ----- From: "Chad H" <chadbh74 at hotmail.com>
>> To: "'CoCoList for Color Computer Enthusiasts'" <coco at maltedmedia.com>
>> Sent: Sunday, August 08, 2010 3:42 AM
>> Subject: Re: [Coco] OS-9 DS floppy config - SUCCESS!
>>
>>
>>>I put together a Double-sided 40-track disk image that contains this
>>>setup, >should anyone wish to examine it further.  I'm using this
>>>particular image >for running Deskmate so it has Deskmate files in the
>>>CMDs.  But it can be >used to make a OS-9 double-sided boot disk from
>>>scratch easily.  I even put >a script in the root that does just that for
>>>you, targeting /D1, called >MAKEBOOT.  It will handle all the formatting,
>>>cobbler, bootfix, etc.  Yes, >the BOOTFIX is included in the CMDS.  This
>>>is utilizing OS9's COBBLER >(Renamed on this disk to OS9COBBLER).  I
>>>haven't tried using NitrOS9's >COBBLER yet with this boot setup.  It's
>>>possible that COBBLER may eliminate >the need for BOOTFIX since we are 
>>>now
>>>working from a good double-sided boot >disk as a source.  I also have my
>>>SET540 script in the root that >initializes OS9 for text output to a HP
>>>Deskjet 540 at 1200baud.
>>>
>>> The image has been uploaded to my repository as DMOS9MOD.DSK
>>>
>>>
>>> My CoCo repository is here >
>>> http://www.mediafire.com/?sharekey=4fzk73i24xo77
>>>
>>> - Chad
>>>
>>>
>>> --
>>> Coco mailing list
>>> Coco at maltedmedia.com
>>> http://five.pairlist.net/mailman/listinfo/coco
>>
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