[Coco] Diskettes

[Brian G]

On 6/28/2011 1:01 AM, Willard Goosey wrote:
> On Mon, Jun 27, 2011 at 09:30:12PM -0500, Steve Ostrom wrote:
>> I found a set of eight diskettes that I have never seen before.  They
>> are 3M DEC RX 50 disks.  A Google search says the DEC RX 50 drives were
>> very unusual, with DEC trying to cram a lot of data on one diskette
>>

<Stuff Deleted>

> Well, I know formatting HD 5.25" disks as DD doesn't work, but I've
> never tried it with quad-density disks.
>
> Gods only know what those disks might have on them.  The Rainbow was a
> CP/M and MS-DOS machine, the Pro-3x0 line were PDP-11's, I've seen
> regular PDPs with an RX50, and I think I once read that some VAXen want
> to load CPU microcode off an RX50 on power-up.>>I'm not sure where the
> old-school DECheads hang out on the Net, but they'd probably be glad to
> see those disks.<<

Maybe someone on the Vintage Computer site might have an interest. Some 
of them have the BIG IRON computers, as I have heard them referred as.

Brian Goers