[Coco] Coco 4

[jdaggett at gate.net]

Eric

try this link

http://home.wwdb.org/irgroup/mfm.html

james


On 6 Jan 2004 at 13:15, peak at mail.polarcomm.com wrote:

Date sent:      	Tue, 6 Jan 2004 13:15:41 -0600
From:           	peak at mail.polarcomm.com
Subject:        	Re: [Coco] Coco 4
To:             	CoCoList for Color Computer Enthusiasts 
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> Ok Neil, Now I have a project to challenge me. I get right on 
> that. Lets call it "coco2ISA Bus adapter". Any software like 
> drivers or descripters will be left up to you or someone else.
> Eric
> Not a programmer! 
> 
> ---- Original message ----
> >Date: Tue, 6 Jan 2004 11:03:40 -0800
> >From: "Neil Morrison" <neilsmorr at hotpop.com>  
> >Subject: Re: [Coco] Coco 4  
> >To: "CoCoList for Color Computer Enthusiasts" 
> <coco at maltedmedia.com>
> >
> >
> >I hadn't even considered DMA. The no-halt design of some 
> controllers
> >would be nice however.
> >
> >Neil
> >
> >----- Original Message ----- 
> >From: <peak at mail.polarcomm.com>
> >
> >
> >> The memory of an ISA card would be decoded using coco's CTS
> >> line and the I/O using coco's SCS line. If you really want 
> an
> >> ISA card adapter for the coco I will see if I can design 
> one
> >> at least as far as a schematic diagram. Warning* I wont 
> even
> >> attempt using DMA though**. The hardware part of an ISA 
> card
> >> adapter for 8-bit ISA cards that dont use DMA should not 
> be a
> >> problem. I have been wanting to do this anyway.
> >> Note: Many ISA cards need a 14.318Mhz signal.
> >> The coco1 and coco2 have this frequency but coco3 does not.
> >
> >> Eric
> >
> >
> >-- 
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> >Coco at maltedmedia.com
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> 
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