[Coco] CoCo video?

[jdaggett at gate.net]

Gene 

MC6844. You are correct in that it best works with the MC6809 and not the 
MC6809E.  You need a considerable amount of external glue logic to make 
it work with the MC6809E.  

james

On 29 Jan 2006 at 22:04, Gene Heskett wrote:

Date sent:      	Sun, 29 Jan 2006 22:04:19 -0500
From:           	Gene Heskett <gene.heskett at verizon.net>
Subject:        	Re: [Coco] CoCo video?
To:             	CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
Organization:   	Absolutely none - usually detectable by casual observers
Send reply to:  	CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
	<mailto:coco-request at maltedmedia.com?subject=unsubscribe>
	<mailto:coco-request at maltedmedia.com?subject=subscribe>

> On Sunday 29 January 2006 21:52, Neil Morrison wrote:
> >Wasn't there some sort of DMA chip for the 6800 series?
> 
> Yes, but it wasn't in the coco's, any of them.  I looked at it once, and 
> it hooks into the 6809 pretty solidly and it would take quite a bit of 
> work to hack it in I think.  Unforch, I don't recall the number of it 
> at this late date, that itch was scratched back in the late 80's.  
> Several moves etc have occured since and I don't recall coming across 
> anything like that in the last 16 years I've lived here.
> 
> >Neil
> >
> >----- Original Message -----
> >From: "Gene Heskett" <gene.heskett at verizon.net>
> >
> >> The 6x09 doesn't, without extensive hardware help, support dma, so
> >> the max transfer is going to be someplace in the 12 seconds per
> >> megabyte moved area...
> 
> -- 
> Cheers, Gene
> People having trouble with vz bouncing email to me should add the word
> 'online' between the 'verizon', and the dot which bypasses vz's
> stupid bounce rules.  I do use spamassassin too. :-)
> Yahoo.com and AOL/TW attorneys please note, additions to the above
> message by Gene Heskett are:
> Copyright 2006 by Maurice Eugene Heskett, all rights reserved.
> 
> -- 
> Coco mailing list
> Coco at maltedmedia.com
> http://five.pairlist.net/mailman/listinfo/coco