[Coco] HDB-DOS-Drivewire 3

[Boisy Pitre]

I just ran a megaread on under NitrOS-9/6309 Level 2 running DriveWire  
3 to an eMac G4 1.42GHz server, and here's what I got:

228 seconds

A more recent system could probably do better, but not by a large  
margin.  Even if you were to cut this in half (114 seconds, which is a  
stretch to think that it could be cut in half) it is still an order of  
magnitude slower than SCSI and way slower than IDE.  A more comparable  
test would be against a floppy system, though current floppies don't  
hold a megabyte.

I'm not sure how much slower or faster DriveWire 3 is than a floppy at  
raw reads/writes but there is something to be said for NitrOS-9  
booting faster from DriveWire 3 than from a floppy disk, and this has  
a lot to do fact that DriveWire 3 is not encumbered by the time  
consuming head movement and track seeks of a floppy disk drive.

If someone has the time (hint hint!), they could modify megaread.asm  
in the NitrOS-9 Project to take an optional parameter: the number of  
1K blocks to read (currently 1,024).  This would allow megaread to  
work with smaller sized devices and results could be extrapolated from  
that.

Regards,
Boisy G. Pitre
--
Tee-Boy
Mobile: 337.781.3570
Email: boisy at tee-boy.com
Web: http://www.tee-boy.com

On Mar 13, 2009, at 6:43 AM, Mark Marlette wrote:

>
> I currently do not have a DW3 setup in place as I am working on  
> other Cloud-9 projects.
>
> Boisy and or, all it takes is megaread and NitrOS-9.
>
> Regards,
>
> Mark
> Cloud-9
>
>
> At 3/12/2009 07:27 PM, you wrote:
>> On Thu, 12 Mar 2009, Mark Marlette wrote:
>>
>>>
>>> Testing I did using MegaRead under NitrOS-9 and SuperDriver......
>>>
>>> SCSI, ~11 seconds
>>> SuperIDE/CF, ~19 seconds.
>>>
>>> We only know one speed, to the floorboard!
>>
>> What did the Drivewire drive benchmark as?
>>
>> --
>>
>> --
>> Coco mailing list
>> Coco at maltedmedia.com
>> http://five.pairlist.net/mailman/listinfo/coco
>>
>>
>> No virus found in this incoming message.
>> Checked by AVG - www.avg.com
>> Version: 8.0.237 / Virus Database: 270.11.11/1997 - Release Date:  
>> 03/12/09 10:38:00
>
> --
> Coco mailing list
> Coco at maltedmedia.com
> http://five.pairlist.net/mailman/listinfo/coco