[Coco] Coco 4

[jdaggett at gate.net]

ISA specs is for 4.777 MHz clock speed. While most 16 bit cards 
will handle faster speeds one needs to be moindful that some of the 
real older 8 bit cards will only support 4.77 Mhz.

james
 

On 6 Jan 2004 at 12:51, peak at mail.polarcomm.com wrote:

Date sent:      	Tue, 6 Jan 2004 12:51:10 -0600
From:           	peak at mail.polarcomm.com
Subject:        	Re: [Coco] Coco 4
To:             	CoCoList for Color Computer Enthusiasts 
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> Neil
> 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 
> 
> 
> ---- Original message ----
> >Date: Mon, 5 Jan 2004 22:06:50 -0800
> >From: "Neil Morrison" <neilsmorr at hotpop.com>  
> >Subject: Re: [Coco] Coco 4  
> >To: "CoCoList for Color Computer Enthusiasts" 
> <coco at maltedmedia.com>
> >
> >
> >Oh, I have a recycler locally so I can get them. It's just 
> when you
> >try to map them into a Coco's address space it becomes very 
> ugly.
> >Perhaps Dennis could figure out a way to do it but I can't.
> >
> >Neil
> >
> >----- Original Message ----- 
> >From: "Richard E. Crislip" <rcrislip at neo.rr.com>
> >
> >
> >> Hello Neil
> >>
> >> If you want one I got one. I was looking it just tonight 8-
> )
> >wondering if
> >> anyone would want such a hip old board.
> >
> >
> >-- 
> >Coco mailing list
> >Coco at maltedmedia.com
> >http://five.pairlist.net/mailman/listinfo/coco
> 
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