[Color Computer] [Coco]Re: Transfer utilities
zmerch at 30below.com
Sun Oct 9 12:10:07 EDT 2005
Rumor has it that Glen VanDenBiggelaar may have mentioned these words:
>Oh, no I am treading into that "area" again over the 3.5 drives.
>I have been reading these list for a year now and no one wants to really
>tackle that subject.
What's to tackle? If you set it up correctly, they just work.
> Some sites say you can upgrade the 26-3022 controller to work with a
> 3.5" drive while others have said any controller will work.
You're talking apples and oranges.
What a lot of people are talking about are data rates. Standard 5.25" DD
drives use a 250KHz data rate. Standard 3.5" DD drives use a 250KHz data
rate. High Density requires a 500KHz data rate, and standard, unmodified
CoCo controllers are not capable of that. Just be happy with 720K; (80
tracks, 2 sides, 256byte sectors & 18 sectors per track).
As long as you're sure that the drive itself can do double density, and you
*only* use double-density disks with it, it will *just work*.
Plain and simple.
> I have tried a FD500 and 502 and neither seem to see it (I have all the
> RS controllers kicking around -except the 501).
Then what cable are you using? The FD50x should use a full cable - i.e.
*no* pins missing.
> It looks like the Distro 2 can use it, but so far no one has said what
> they are using for a controller and if it has been modified.
[[ First off: it's "Disto." Distros are for Linux. ;-) ]]
The only time modifications are warranted is *if* you want the sucker to do
High-Density, which requires a different data rate that standard CoCo
controllers aren't designed for.
If you *have* to have 1.4M HD access, just wait roughly forever until an
FHL Eliminator is available, or Cloud-9's SuperBoard.
> This seems to be the biggest "secret" of the CoCo, one that I have not
> been able to see a clear answer in the last year anyway.
Then maybe you've not asked the right questions...
>My J&M systems controller does not seem compatible with my FD502 drive
>because of a "Tooth" in the cable that I cant seem to remove (not for lack
Think outside the box: Don't remove the tooth, clip the wire leading to the
tooth. If the connector's keyed, then drill out the key. Simple.
> When I switched to an FD 500 drive, my CoCo 3 doesn't respond (I assume
> it needs a multi-pak for the FD 500).
I *thought* that the FD500 controller was 5V only, but I could be wrong. If
it is, tho, then the pack might be dead. If you *do* need a Multi-Pak for
it, that's solely because the CoCo3 doesn't supply 12VDC on the cartridge
port; but the Multi-Pak does. If you can find a regulated +12V supply in
the CoCo you could jumper it yourself & make it work fine; otherwise find
yerself a 12V wall-wart and add it directly to the controller.
Those solutions, of course, would assume a mediocre amount of hardware
manipulation knowledge; I know some folks here are pretty much
software-only, so these solutions may not work for you; however, for those
more hardware-minded, it's a bog-simple modification. ;-)
Roger "Merch" Merchberger
Roger "Merch" Merchberger -- SysAdmin, Iceberg Computers
zmerch at 30below.com
Hi! I am a .signature virus. Copy me into your .signature to join in!
More information about the Coco