[Coco] Super IDE vs. Drive Pak

[Mark Marlette]

Mark,

I have used several different adapters on the S-IDE  since '04. They do work, all of them. MS, MSpro, SD, SDHC, MMC, etc.

Never thought of wrapping the logic with the hardware solution.... :) 

Another approach would be to used a AVR to do the parallel to SPI, simple and cheap.

Even easier, if you know the .v or .vhdl is to do as you did.

Interesting and great idea.

Regards,

Mark
Cloud-9
http://www.cloud9tech.com


----- Original Message -----
From: "Mark McDougall" <msmcdoug at iinet.net.au>
To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Sent: Wednesday, November 16, 2011 9:56:01 PM
Subject: Re: [Coco] Super IDE vs. Drive Pak

On 17/11/2011 1:58 PM, John Kent wrote:

> 2003/2004 was about the time I was using CF cards with my FPGA 6809 system.
> The IDE interface is much easier to understand than SD & SDHC.

Has anyone looked to see if there are IDE/CF<->SD adapters available?

I'm using an SD card in my "Coco with S-IDE". I use quotes, because it's all 
in an FPGA, running stock HDB-DOS. I've wrapped a proprietary IDE<->SD 
converter layer around the standard Opencores IDE controller core, so the 
'S-IDE' thinks it's talking to a CF.

Unfortunately, atm, the IDE<->SD converter is read-only; that is, it only 
supports reading the SD card. But there's not a lot to it, and I'm wondering 
if you could do a small board with a CPLD in it that does the same for a 
real CF<->CF adapter?

Then again, not really sure why people are so hell-bent on SD vs CF?!? For 
all practical purposes, isn't the only difference that you're sticking one 
in the CF slot of your mutli-card reader, and the other in the SD/MMC slot?

Having said that, USB would be nice. But now you're looking at a USB 
host-enabled micro, emulating an IDE device (which is very doable BTW).

Regards,

-- 
|              Mark McDougall                | "Electrical Engineers do it
|  <http://members.iinet.net.au/~msmcdoug>   |   with less resistance!"

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