exxos's Atari, Amiga & retro forum

After working on a Clab falcon recently I was envious of the internal scsi, so I spoke to a good man named Lynxman on atari-home.de and he kindly sent me a PCB he'd made with @tuxie . It works very well :)

@czietz I was wondering (sorry for pinging you, you're the driver expert round here!) The scsi2sd v6 has an unpopulated USB header. Do you think this could be used for scsi > usb in an Atari, perhaps with modified CosmosEx drivers?

Sorry, I'm afraid you need to ask the SCSI2SD makers that question. I have no idea what that USB header is for.

Steve wrote: 22 Feb 2021 20:17 @czietz I was wondering (sorry for pinging you, you're the driver expert round here!) The scsi2sd v6 has an unpopulated USB header. Do you think this could be used for scsi > usb in an Atari, perhaps with modified CosmosEx drivers?

Strange, mine doesn't, it has a micro-USB connector so you can configure the device though.

stephen_usher wrote: 22 Feb 2021 20:57

Steve wrote: 22 Feb 2021 20:17 @czietz I was wondering (sorry for pinging you, you're the driver expert round here!) The scsi2sd v6 has an unpopulated USB header. Do you think this could be used for scsi > usb in an Atari, perhaps with modified CosmosEx drivers?

Strange, mine doesn't, it has a micro-USB connector so you can configure the device though.

Yours is a V6? I think there are three different revisions now.

Steve wrote: 22 Feb 2021 21:34

stephen_usher wrote: 22 Feb 2021 20:57

Strange, mine doesn't, it has a micro-USB connector so you can configure the device though.

Yours is a V6? I think there are three different revisions now.

Yep. I have some V5s (small), a couple of V5.1s and a V6.

@Steve by any chance you don't have a CosmosEx V3 to try in there? To me it looks like that there's no way it could fit but I may be wrong.

Steve wrote: 22 Feb 2021 20:17 @czietz I was wondering (sorry for pinging you, you're the driver expert round here!) The scsi2sd v6 has an unpopulated USB header. Do you think this could be used for scsi > usb in an Atari, perhaps with modified CosmosEx drivers?

The USB port on the SCSI2SDv6 is there to allow firmware updates and USB mass storage filesystem access via a connected modern computer, a task for which I've used it quite successfully with my TT in the past, incidentally, by sharing a small "staging" partition that both the Mac and the TT could see. It is connected directly to the STM32F205 and is not exposed in any way on the SCSI end of things.

Unlike the CosmosEx, which is running full Linux on a Raspberry Pi, the SCSI2SDv6 is running a very simple firmware on the STM CPU, which has only 1 MB flash and 128 kB RAM. While I don't know anything about the firmware (source is available though), I would be very surprised if it is possible within those confines to expose the USB port in any useful manner to the host ST.

mikro wrote: 23 Feb 2021 07:34 @Steve by any chance you don't have a CosmosEx V3 to try in there? To me it looks like that there's no way it could fit but I may be wrong.

I don't have one, I'm waiting for the v4 to come out now. It might mean cutting some plastic out from the bottom of the Cosmos case, or maybe fitting a right angle connector on the red scsi pcb, hopefully there will be a way.

Hi all,
Can we have the latest board somehow ?