[Coco] DriveWire 4 - NitrOS-9 Floppy *BOOTSTRAP!*

[Aaron Wolfe]

I think that would work.  AFAIK the dwio (former dwsub) portion can be
swapped to any of the supported mechanisms without changing anything
else.

You could also look at how the becker series builds and clone that to
build a dw4 series... I don't know if that is simple or a lot of work.

When I was working with Darren in testing the turbo stuff (it was
quite a while ago) I believe the actual increase in speed is about
40%, not 100% as you might expect, due to some overhead that just
cannot be avoided.  That may have changed since then, I am not sure.
Until this last week I didn't even realize the drivers were "in the
wild"... or maybe I did know that and forgot?  Too many things going
on lately.


On Sun, Sep 29, 2013 at 9:10 PM, Bill Pierce <ooogalapasooo at aol.com> wrote:
>
> I'm probably going to have it a shot at the turbo mode this week. All one would have to do is rename dwread.asm and dwwrite.asm to dwread.old and dwwrite.old, then rename the dw4read.asm and dw4write.asm to dwread.asm and dwwrite.asm. The do a "make all"
> That should do it if the conditionals are present in the dw4 sources to set the Coco 2 and 3 builds... right?
> I'll have to compare the conditionals to the current ones in case they were renamed (a lot was) and haven't been updated yet since they are not being built.
>
> The double speed throughput on my 3 would really make some of my projects "sing".
>
> Bill Pierce
> My Music from the Tandy/Radio Shack Color Computer 2 & 3
> https://sites.google.com/site/dabarnstudio/
> Co-Webmaster of The TRS-80 Color Computer Archive
> http://www.colorcomputerarchive.com/
> Co-Contributor, Co-Editor for CocoPedia
> http://www.cocopedia.com/wiki/index.php/Main_Page
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>
>
>
>
> -----Original Message-----
> From: Aaron Wolfe <aawolfe at gmail.com>
> To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
> Sent: Sun, Sep 29, 2013 8:58 pm
> Subject: Re: [Coco] DriveWire 4 - NitrOS-9 Floppy *BOOTSTRAP!*
>
>
> I suspect because 38400 x 2 = 76800, which is a pretty weird serial port speed.
> It may also be that the same hardware issues which prevent 57600 also
> simply do not allow any "turbo" operation.
>
> Please remember that the so called "DW4" or Turbo roms and drivers are
> experimental and unsupported at this time.  As you noted, they are not
> automatically built in the standard boot disks.  It is expected that
> if you want to experiment with these things that you will have a
> NitrOS9 build system and the experience to create these modules from
> what is provided.. if this doesn't sound like something you (and I
> don't mean you specifically, Bill :) are able or want to do, please
> wait until the Turbo stuff is made mainstream.
>
>
>
>
>
>
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