[Coco] HDB-DOS-Drivewire 3

[Bob Devries]

Boisy,

IIRC, there's an OS9 programme called QMEGREAD which is similar to megaread, 
but reads just a quarter megabyte of data.
It should be on RTSI.

--
Regards, Bob Devries, Dalby, Queensland, Australia

Isaiah 50:4 The sovereign Lord has given me
the capacity to be his spokesman,
so that I know how to help the weary.

website: http://www.home.gil.com.au/~bdevasl
my blog: http://bdevries.invigorated.org/

----- Original Message ----- 
From: "Boisy Pitre" <boisy at tee-boy.com>
To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Sent: Friday, March 13, 2009 10:46 PM
Subject: Re: [Coco] HDB-DOS-Drivewire 3


>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?
>>>
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