[Coco] Re: OS9 Getclock

[John Donaldson]

Boisy and ALL,
   Well I can tell the eumlator that B: is /D1 and A: is /D2 or via 
versa. In fact you tell it any drive
you have on the MSDOS machine to be /d0 /d1 /d2 or /d3.
    I guess the question IS if the MSDOS DSKINI.exe can format a OS9 
disk, why can not the
emulator do the same thing??
    I suppect the reason the MSDOS DSKINI.exe and RETRIEVE.exe were 
written, is because
most MSDOS machines DO NOT have 306K DSDD drive anymore. Since you can 
take a 720K
3" disk and make it look like a 360K DSDD drive.
     At least that is what I think is the case. Then too, I could be 
whisling in the wind.

John Donaldson



Boisy G. Pitre wrote:

> 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
>>>
>>>
>>>
>>>
>>
>>
>>
>> -- 
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>>
>
>