[Coco] Re: OS9 Getclock

Boisy G. Pitre boisy at boisypitre.com
Wed Jul 14 20:37:28 EDT 2004


John,

I believe Rodney is talking about the DSKINI/RETRIEVE commands, not 
accessing the disk from the emulator.

Please tell me if I'm wrong, but I don't believe you can access the 
physical floppy disk as /D0, /D1, etc. from any emulator that is 
running NitrOS-9.

Boisy

On Jul 14, 2004, at 7:31 PM, John Donaldson wrote:

> Rodney,
>    At last a explanation of what is going on. I would have thought 
> that John would have fixed that
> in his 6309 version. Speaking of John, I have not seen him on the list 
> in quite a while. Has he
> disappeared again??  JOHN ARE YOU OUT THERE!!!!!!!!!
>
> John Donaldson
>
>
> Rodney V Hamilton wrote:
>
>> In article <40F58406.3040906 at charter.net>, 
>> jadonaldson-xwVYE8SWAR3R7s880joybQ at public.gmane.org says...
>>
>>> Boisy,
>>>  Thanks for the reply. It feels great getting back into NITROS9 
>>> again. I now have both a laptop and
>>> a desktop running the May 14, 2004 release.
>>>   I still can not get NITROS9 to format or read my 360K drive or the 
>>> 720K drive. Both DSKINI.exe and RETRIEVE.exe under MSDOS works with 
>>> the drives. I have been able to use DSKINI to make both a 40T and a 
>>> 80T boot disk and then used RETRIEVE to copy them to a DSK and the 
>>> DSK's do boot on the emulator. I understand that IBM thinkpads have 
>>> a floppy problem,
>>> but the desktop is a IBM 486 DX2. It uses a standard floppy cable, 
>>> so I would expect it be
>>> compatible. I am running DOS 6.2 on the desktop.
>>>
>>> John Donaldson
>>>
>>
>> John, if your descriptor is set correctly, you should be able to 
>> access
>> the 720K drive with no problems.  The 360K drive may not work properly
>> due to a flaw in the emulator's disk I/O code in which it treats a 
>> 360K
>> drive the same as a 1.2M drive and assumes it also uses a 360 rpm 
>> speed
>> instead of the actual 300 rpm rate.  Amardeep S Chana pointed this out
>> in a Jan 5 2001 post to bit.listserv.coco and included a workaround to
>> get the emulator to use the correct speed by setting the BIOS type for
>> that drive to 720K.  (see note on Jeff Vavasour's webpage, (or google
>> for "Re: Re: Emulator file retrieval" in bit.listserv.coco)
>>
>> On 26 Jan 2003, Amardeep posted a source code patch to 
>> bit.listserv.coco
>> that might fix the problem.  Maybe someone with knowledge of 8x86 code
>> could try it out and post a binary patch to the emulators - it looks 
>> to
>> me like the revised code would be the same size, so we should be able 
>> to
>> do a "modpatch-style" debug/hex edit fix.  (the subject thread was
>> "Reguarding Jeff's TRS-80 COLOUR Emulator retrieving coco formatted 
>> disks"
>> and Amardeep's reply+patch info was dated 2003-01-26 09:54:26 PST)
>>
>> Sorry I can't help more at this time but I'm fixing a zapped 
>> filesystem
>> on my main email/news/www system (power outage from a Florida 
>> lightning
>> storm during disk I/O) but I hope to be back up sometime tomorrow.
>>
>> Rodney V Hamilton
>>
>>
>>
>>
>
>
>
> -- 
> Coco mailing list
> Coco at maltedmedia.com
> http://five.pairlist.net/mailman/listinfo/coco
>




More information about the Coco mailing list