[Coco] OS-9 RAM disk with "rdisk" command? And /md descriptor?

[Gene Heskett]

On Saturday 31 January 2015 22:16:50 Bill Pierce via Coco did opine
And Gene did reply:
> Allen, If you look in the 'nitros9/6x09L2/modules/rbf/" folder on any
> distribution disk, you'll find "MyRam.dr" and "MyRam_R0_96k.dd" which
> are Gene Hesket's ram disk. It will auto-init, auto-format and if you
> don't like the size, deiniz it, dmode the "sct" to the "sector" size
> you want, and "just use it" Deiniz it, and it returns the memory back
> to OS9.
> 
Its not in a  4 day old pull Bill.  The only descriptor that goes with 
myram.dr, is mr0.dd.  And it the number of cylinders, translated to 8k 
blocks, that determine its operating size. sct is AFAIK, and I wrote it, 
not used for anything.
> 
> Bill Pierce
> "Today is a good day... I woke up" - Ritchie Havens
> 
> 
> My Music from the Tandy/Radio Shack Color Computer 2 & 3
> https://sites.google.com/site/dabarnstudio/
> Co-Contributor, Co-Editor for CocoPedia
> http://www.cocopedia.com/wiki/index.php/Main_Page
> E-Mail: ooogalapasooo at aol.com
> 
> 
> 
> 
> -----Original Message-----
> From: Allen Huffman <alsplace at pobox.com>
> To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
> Sent: Sat, Jan 31, 2015 9:57 pm
> Subject: [Coco] OS-9 RAM disk with "rdisk" command? And /md descriptor?
> 
> 
> I cannot remember where I got the OS-9 RAM disk I use, but it was by
> far my favorite of all the ones I tried over the years. It came with a
> command called “rdiskâ€‌ that let you dynamically create the RAM
> disk as any size you wanted, rather than having descriptors set to
> different sizes.
> 
> It looked like this:
> 
> Error - Use Rdisk [â€کname’] [/device] [size in blocks] [action]
>         where action = T to terminate or R to recover
> 
> I used it all the time to create a big RAM disk when I needed it, else
> small ones, without changing bootfiles.
> 
> Looking at my old NitrOS-9 boots, circa 1996, the driver inside is
> called “Rammerâ€‌:
> 
> Size: $0115 #277
> CRC: $3AB3AA
> 
> The one included with NitrOS-9 today is also called Rammer, but it does
> not seem to honor the Rdisk utility. I plan to pull my old one out and
> use it, but wondered if anyone remembered what this was.
> 
> Also, I note in my bootfile that a second descriptor called “MDâ€‌
> was in there using Rammer, but it was slightly smaller.
> 
> R0 = 47 bytes
> MD = 33 bytes
> 
> I have zero recollection of what /md was for.
> 
> 		— A


Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>
US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS