[Coco] Coco 3 - 1 meg or 2 meg upgrade?

[Brian Blake]

A 1 or 2 meg upgrade would be nice...


On Tue, Sep 17, 2013 at 8:34 PM, Bill Pierce <ooogalapasooo at aol.com> wrote:

>
> Bruce, I caught that as I was entering your list into my compiled list.
> That's 3 that I know of. Is that a working coco? Or just shelved?
>
> I'm currently working on some software that will utilize the extra memory
> when present. It should prove interesting. I found you can allocate get/put
> buffers in NitrOS9 till the memory runs out. The only thing required is a
> valid L2 screen (text or graphics, no VDG) to host the buffer path.
>
> In my test program, I've opened 64 x 8k buffers (512k), unmapped,
> remapped, did writes, unmapped, remapped, did reads to verify the data
> written and still had 240k free on a 1 meg system with full DW4 Nitros9
> boot and utils with 2 HW 80 column windows open and a 90k ramdisk open. I
> could've opened 14 more buffers and still had 128k for programs. That's
> 544k for one large buffer for a text editor, graphics animator, midi
> sequencer, or anything that need more memory. All it takes is an indexing
> system to keep up with where in the buffers you are at. Such as: CurIndex /
> Pagesize = CurPage. Remainder = Curpos in Curpage. Simple.
>
> This works on 512k as well, just no where near as many buffers. I think 43
> was when I ran out of memory. That was with full boot, utils, 90k ramdisk
> and 3 text windows open plus the workspace for the program itself.
>
> Thanks :-)
>
> Bill Pierce
> My Music from the Tandy/Radio Shack Color Computer 2 & 3
> https://sites.google.com/site/dabarnstudio/
> Co-Webmaster of The TRS-80 Color Computer Archive
> http://www.colorcomputerarchive.com/
> Co-Contributor, Co-Editor for CocoPedia
> http://www.cocopedia.com/wiki/index.php/Main_Page
> E-Mail: ooogalapasooo at aol.com
>
>
> --
> Coco mailing list
> Coco at maltedmedia.com
> http://five.pairlist.net/mailman/listinfo/coco
>



-- 
Ohioan by birth, Floridian by the grace of U-Haul and a bad economy...
--------
Sarcasm is the body's natural defense to stupidity.