[Coco] tc3 scsi controller

[Mark Marlette]

Jim,

Multiple devices supported. The host controller doesn't have an id, if that is what you are referring to.


Simple basic poke test.

Per Gene's information, which is correct. If the drive is strapped to ID0

POKE &HFF74,1 ' data value is the bit weight of the drive ID

POKE &HFF75,0

the drive light will come on. As I recall this only works for hard drives, not JAZ drives, been a long time ago.

Regards,

 
Mark Marlette
http://www.cloud9tech.com
mark at cloud9tech.com



________________________________
 From: Jim Hickle <jim at hickle.us>
To: coco at maltedmedia.com 
Sent: Thursday, October 23, 2014 7:02 PM
Subject: Re: [Coco] tc3 scsi controller
 


On 10/18/2014 3:36 AM, Gene Heskett wrote:
> Nope,only 3 more allowed, the controller itself is one bus address in 
> the scsi scheme of things. scsi bus device addresses are a single set 
> bit, walking across the byte-wide bus. The controller itself is 
> normally at $80. Drive 0 is actually $01, drive 1 is $02, next is $04, 
> $08, $10, $20, $40. Cheers, Gene Heskett 
Unlike most every other controller, the TC^3 doesn't take an ID.

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