[Coco] 2MB Memory Upgrade For The Coco 3

[Stephen H. Fischer]

Hi,

With the correct Memory Map patches or NitrOS-9 knowing not to use graphics 
pages that wrap around, the reason that Tony included MEGA2 and I got Jeff 
to fix his CoCo3 Emulator, you can use more OS-9 graphic screens.  I 
remember doing that and loading the entire C Compiler, SLED and so on into 
memory.

I found it very useful and yes, I used a ramdisk also.

SHF

----- Original Message ----- 
From: "Aaron Wolfe" <aawolfe at gmail.com>
To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Sent: Sunday, August 05, 2012 12:12 PM
Subject: Re: [Coco] 2MB Memory Upgrade For The Coco 3


> On Sun, Aug 5, 2012 at 12:11 PM, Bill Pierce <ooogalapasooo at aol.com> 
> wrote:
>>
>> Aaron, Sorry but I have to correct you on the "more than 512k" upgrade. 
>> OS-9 sees it as regular memory and will allocate the 64k workspaces for 
>> new processes as well as graphics screens from the extra memory. I have a 
>> 1 meg system and use the extra memory all the time. It's just automatic. 
>> NitrOS-9 has full support as well as the patches needed for the graphics 
>> drivers already in place. And yes... it makes for good RamDisks... I run 
>> a 720k ramdisk when I'm programming in "C".
>> Theoretically... you can have up to 4 meg... or is it 8 meg now? I know 
>> Sock Master was playing around with this.
>>
>
> Notice that I qualified my statement with "practical" :)  Have you
> really ever used more than 512k for processes in OS9?
> What software can do it?  My system runs out of system map space for
> process descriptors long before actual RAM if I try to spawn enough
> shells to fill ram.  I've asked about that on the list before, and
> noone has brought up actually using it for anything besides a ram
> disk.
>
> -Aaron
>
> --