[Coco] A CoCo 3 Hard Drive System

[Didier Derny]

it may be a good idea to contact the guy making the SCSI2SD I'm not sure 
he has completed the modification
to connect to a SASI controller..

for the SASI controller it's quite simple mostly  parallel port + 
drivers to support the SASI signal
mostly composed of 74LS32 in one side and 74LS240 in the other side

for the protocol it's simple we send a  command  then send/received data

if someone is interested I can try to find my documentation and put some 
links




On 27/01/2015 15:53, Allen Huffman wrote:
> Cool find!
>
>> On Jan 27, 2015, at 12:19 AM, Mark J. Blair <nf6x at nf6x.net> wrote:
>>
>> * A floppy controller marked "Hard Drive Specialist Color Computer Controller". Inside there's a 28 pin EPROM marked "OWLWARE HDBASIC3".
> Hard Drive Specialists was in Houston, if I recall. A friend of mine, that I converted from her Commodore 128 to a CoCo 3, got one of their floppy controllers. It had an issue, so we drove down there (2 hours from Lufkin, TX) and met with them and they fixed us right up. I wish I could remember who I met with -- he was real nice, and said they didn't really do much with the CoCo -- it was just an excuse to go to Rainbowfests and have fun.
>
> Did Hard Drive Specialists ever actually make a hard drive controller for the CoCo?
>
>> I'm not very familiar with SASI. It's my understanding that SCSI is a descendant from it. I wonder if some sort of modern SCSI drive emulator like the SCSI2SD card might work with that SASI cartridge?
> Very interesting. I plan to be getting a SCS2SD to try on my MM/1. I guess it's time to look up SASI and see how it evolved.
>
> 		-- A
>
>