[Coco] Re: Coco 4

[jdaggett at gate.net]

Richard

By todays's standard yes slow. Even at 3 MHz buss speed the Coco can 
not go as fast a the slowest 8/16 bit transfer rate. 

All ATA -1 compliant drives and cards support 8 bit transfers. There is a 
register in the IDE controller to tell it that transfers will be 8 bit. ATA-2 
compliant were no longer required to support 8 bit transfers though some 
still did. Many of the older 40 to 100 MB drives of the late 80's to about 
1991/2 time frame would support 8/16 bit transfers. Also some CD drives 
of the 1x and 2 x speeds also supported 8 bit transfers. 

Once they got past the 524M barrier, I think no dirve supports 8 bit 
transfers. CDs past 4x no longer suport 8 bit transfers. 

james

On 7 Jan 2004 at 23:28, Richard E. Crislip wrote:

From:           	"Richard E. Crislip" <rcrislip at neo.rr.com>
To:             	CoCoList for Color Computer Enthusiasts 
<coco at maltedmedia.com>
Date sent:      	Wed, 07 Jan 2004 23:28:15 -0300
Subject:        	[Coco] Re: Coco 4
Send reply to:  	rcrislip at neo.rr.com,
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> Hello Neil
> 
> Right they were and right it is IDE... old ssslloowwwwww IDE 8-)
> 
> On 01/08/04, Neil Morrison wrote:
> > 
> > FWIW, I believe the HD function is a port only for an IDE drive. But
> > these cards are/were as common as dirt.
> > 
> > Neil
> > 
> > ----- Original Message ----- 
> > From: "Richard E. Crislip" <rcrislip at neo.rr.com>
> > 
> > 
> >> Hello peak at mail.polarcomm.com
> >> 
> >> I was referring to the multifunction card with the FD HD serial and
> > parallel
> >> ports on it. Someone, apparently not you, mentioned using one or
> > reverse
> >> engineering it as mentioned in the quote I cut below.
> >> <cut>
> >> "and any ISA cards which we use will need to be examined to
> > determine thier
> >> port addresses. If anyone knows of an ISA bus multifunction card
> > with
> >> HD,FD,Parralell,2 serial or so please let me know."
> > 
> > 
> Regards
> -- 
> Cruisen                                   _|_
>               on AutoPilot with an Amiga   ---o-( )-o---   and a CoCo
> 
>                                    Richard
> 
> 
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