[Coco] ROM Development question

Gene Heskett gheskett at wdtv.com
Thu Mar 12 01:14:17 EDT 2015



On Wednesday 11 March 2015 21:06:20 Louis Ciotti wrote:
> Thanks guys... I have a uv eraser already, picked it up from an
> co-worker when he reitered and cleaned out his desk, have not tried it
> yet, but it should work , looks barely used.  An emulator would be
> nice, but I suppose that those would have to be specific to the
> circuit used.  I wish I got into this stuff 30 years agowhen I had
> gotten my coco, it would be easier for me to learn!

I think that is a lament we all might have, but we have to also remember 
that 30 years ago, just the hardware to play with this stuff was priced 
at 5000% of what it is today even after adjustment for inflation.

So we might have drooled over the possibility if it existed, but no one 
here could have afforded the price of the admission. Sad, but truthfull.

Having been on this list since it was on Princeton.edu, I am amazed at 
the number of "newer" names who have come here in the last decade, 
learned well, and are now busy building nearly all the the wishlists 
we've all had since Hector was a puppy.

In fact, with all the new talent, I would not be surprised to see someone 
build the coco 4 by taking this 6 chip circuit, laying out a new gime 
that will fit in one of the bigger cpld's, giving us a full 24 bit 
memory range, while still maintaining the 8k block size, so that all of 
our considerable Nitros9 software can continue to be used. That would 
give us access to 16 megabytes of memory.

Imagine an minted session using 15 megabytes of memory, simply by using 
the same techniques of memory management that myram (mram in the repo) 
uses to setup a 1.7 megabyte ramdisk on my 2 meg machine.  I think it's 
a doable project.

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>


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