[Coco] Memory available in NitrOS-9 ?

[Bill Pierce]

Stephen, that's because OS9 and especially NitrOS9 was really designed for a 512k (or more) system. It will run on 128k but there's not much you can do with it. The best you can do is to trim your bootfile down to only what you need and nothing more.
As for copying files to NitrOS9 from the PC, MShell give a nice graphic interface to "point-n-click" copy anything from OS9, RSDOS, or the DW4 server PC. You can browse you PC as if it were an OS9 disk.
But, MShell "requires" at least 512k
 

Bill Pierce
"Today is a good day... I woke up" - Ritchie Havens
 

My Music from the Tandy/Radio Shack Color Computer 2 & 3
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-----Original Message-----
From: Stephen Pereira <spereira1952 at comcast.net>
To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
Sent: Sat, Jan 17, 2015 4:00 pm
Subject: [Coco] Memory available in NitrOS-9 ?


Hello again, all,

So, here I am wandering around in NitrOS-9 again...

My system is a 128K CoCo 3 with HDBDOS in an EPROM cartridge, using Drivewire 4.

I now know that NitrOS-9 cannot read any of my other .DSK images, so I cannot 
get any of my other files into NitrOS-9 easily.  Since I have not found the 
equivalent of the excellent FILE2DSK tool for OS-9 yet, this may become a 
challenge for me.

Next, I figured that I'd go to one of the CoCo software repositories and pick up 
something to play around with.  I selected Dynacalc from Tandy for OS-9.  I 
inserted the .DSK image into my Drivewire server and took a look at it.  It 
appeared that the disk is supposed to be in drive 0, because it has files like 
OS9boot and STARTUP.  also at the top level is a file called DYNACALC.TRM.  I 
took a look into the CMDS directory, and there is DYNACALC, along with only a 
few other commands.

Well, I am getting smart enough to understand that I probably cannot put this 
.DSK image into my Drivewire drive 0 and issue the DOS command, because the 
Tandy software probably has no knowledge of HDBDOS and probably won't boot.  But 
I did try to invoke the program by typing:  /X3/CMDS/DYNACALC.

What happened next?  I watched Drivewire start out on my drive 0 (as expected) 
then move onto drive 3 (as I had hoped) and then after a couple of seconds, I 
got an error #207 - that's memory full.

So, knowing that I am at least on the right track, I poked around a bit and 
found that the MFREE command tells me that I have 24K available, and the MMAP 
command shows me the same graphically.  So, in my 128K system, when I'm using 
NitrOS-9 I have only 24K memory left available for programs that I want to run.

NOW I know why many folks here on the list are so interested in obtaining more 
memory for their machines!

Thanks for listening.  I'll continue to putter around with this.

smp
--
Stephen M. Pereira
Bedford, NH  03110
KB1SXE


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