[Coco] 2 x 3.5 Drives on CoCo

[Gene Heskett]

On Saturday 13 March 2010, Jason Law wrote:
>Thanks so much!
>
>I could see where DS was soldered on the board and was contemplating
> cutting a trace and soldering the other, but a cable twist is safer and
> less permanent :)
>
>Any chance anyone has schematics for a power supply? I'm using an old AT
>power supply for testing, but a 230W power supply is a bit of an over kill
>long term :D
>
>Thanks again
>
Chuckle.  Yup its overkill.  OTOH, one of those old boat anchor weight AT 
supplies has been running my whole system for at least a decade, maybe 15 
years now.  It came out of the first computer we ever had for the wireline 
stuff in the newsroom when CBS retired it, I grabbed it. Intel made, you 
could have run over it with a Patton Class tank.  But it was also slow as 
molasses, and was hard put to keep up with the capture stream when it was 
part of the vertical interval stuff coming in from the network, and that is 
NOT high bandwidth.  A 33 mhz 386 and 4 mags of ram IIRC, came over on the 
Mayflowers spring resupply ship I think.   So that supply itself is nearly 20 
years old.
>
>-----Original Message-----
>From: coco-bounces at maltedmedia.com
>[mailto:coco-bounces at maltedmedia.com]On Behalf Of Darren A
>Sent: Saturday, March 13, 2010 4:10 PM
>To: CoCoList for Color Computer Enthusiasts
>Subject: Re: [Coco] 2 x 3.5 Drives on CoCo
>
>On 3/12/10, Jason Law  wrote:
>> Hi Guys,
>>
>> Does anyone have info on the cable twist that needs to be done to allow 2
>
>x
>
>> 3.5 drives to work from a disk controller?
>>
>> I have one drive working as drive 1 & 3, but I have read a cable twist is
>> required for drive 0 & 2
>>
>> Thanks in advance :)
>>
>> --
>
>Twisting lines 10 through 12 swaps the drive 0 and drive 1 select
>lines so that a drive which is hard-wired to respond as drive 1 (as
>many 3.5 inch drives are) will respond as drive 0.
>
>Darren
>
>--
>Coco mailing list
>Coco at maltedmedia.com
>http://five.pairlist.net/mailman/listinfo/coco
>
>
>--
>Coco mailing list
>Coco at maltedmedia.com
>http://five.pairlist.net/mailman/listinfo/coco
>


-- 
Cheers, Gene
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)

Mother is the invention of necessity.