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68net - a modern SCSI to Ethernet board


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3 hours ago, ronan said:

Any ideas of what's the name of the HDI-30 connector ? I can't find it on DK. Maybe it has another name ?

http://www.pacificcable.com/Picture_Page.asp?DataName=SC38

 

According to this site, it's a non standard connector created by Apple, so not sure if you'll find it on Digikey.  Not sure where all these 3rd party adapters were getting the connector though

 

 

Worse case you might be able to measure the pitch of the pins and find another connector with the same pitch thats 6 columns x 5 rows and use that

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On 11/24/2020 at 11:23 AM, ronan said:
On 11/24/2020 at 11:14 AM, ironborn65 said:

yes, right, the connector exists, I got this  https://www.ebay.com/i/273425140933?chn=ps 

 

I did not know about that, nice ! I wonder if designing one would be worth it ? 

 

Pros

- fast to design

- cheaper (especially because the one you suggest does not cheap to EU)

 

If I can't find one to buy on ebay I'll do this little project I think :) 

 

I managed to loose a detailed post yet again! :rolleyes: At any rate this might help you get off to a start with your PowerBook case project.

 

HD-30_Connectors-00.thumb.JPG.2d3e322effba638e399527ce3c9495f6.JPG

 

Had a hunch and tore apart one of my L-shaped adapters, it uses a wire terminated part similar to or identical to the part ASANTE used. Straight up buying one of the cheapo adapters to cannibalize would likely be less expensive than the HD30 part you didn't find at DigiKey. I'd be very surprised if you can't find those or similar adapters on Ebay/Europe?

 

Came up with several suggestions for your PB housing. If interested, search the Ports_Pinouts.PDF and I'll elaborate here, the Gamba2 link is dead. Alternately you can start a dedicated thread in hacks about a case for your board.  I can post my research findings there and you can enlist someone from the 3D-printed objects gang to run with it so you can concentrate on board development here. Maybe Cory could move related posts from the beginnings of the PB application tangent to the new topic for you?  That would keep them in context and do a bit of cleanup here?

 

Can you export a DXF or other CAD file of your board, or an object oriented PostScript file from your board design package? Is there a Gerber to CAD file translation utility available? As a starter from my end, the termination wires might be long enough to be soldered into the inboard thruholes for the top half of your duplex DB-25 connector? Looks iffy, could you post a top view of your board?

 

p.s. note the ridge/slot/hole implementation of the APS housing. You can also just see that the upper portion is a triangular filleted interface on one side as opposed to being a squared off inset on both sides as on the cheapo part, much more like the custom Apple connector. More pics to come at some point.

Edited by Trash80toHP_Mini
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A little post to keep you updated. I've been busy with work and personal time recently but here is a quick update.

 

I have a few things to fix for rev B, mostly things around USB that prevented DFU to work correctly. But nothing hard to fix and that prevents me to work on the software side.

 

The SCSI part is working well as you can see on the following screen :) 

 

IMG_3212.thumb.jpeg.d50123bb5cfc9bff2e94153acc532f0c.jpeg

 

Next steps are implement the protocol to communicate with the driver on mac os. I'll keep you updated ! :) 

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On 12/2/2020 at 4:06 AM, cheesestraws said:

 

Nope.  Each vendor basically did their own thing.  @saybur reverse-engineered the NuovoLink protocol, though, and that work has been what people are building on top of.

 

I think that if you review the AppleTalk chapter in Inside Macintosh volume VI you'll find some discussion on the .ENET and .ENET0 drivers which would be applicable.

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On 12/1/2020 at 6:04 PM, ronan said:

Next steps are implement the protocol to communicate with the driver on mac os. I'll keep you updated ! :) 

 

Do refer to the AppleTalk chapter in Inside Macintosh volume VI for the standard driver interface, if you are not already aware of it.

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13 minutes ago, Dog Cow said:

I think that if you review the AppleTalk chapter in Inside Macintosh volume VI you'll find some discussion on the .ENET and .ENET0 drivers which would be applicable.

 

I have that, and also Inside Appletalk.

 

12 minutes ago, Dog Cow said:

Do refer to the AppleTalk chapter in Inside Macintosh volume VI for the standard driver interface, if you are not already aware of it.

 

Fortunately in this case there's an existing driver, none needs to be written.

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52 minutes ago, Dog Cow said:

 

Do refer to the AppleTalk chapter in Inside Macintosh volume VI for the standard driver interface, if you are not already aware of it.

 

I was not aware of that indeed. I just had a quick look. If I understand well the ENET driver is not a hardware driver but communicates directly with the hardware drivers.

 

If I understand well this sums up as :

 

Mac TCP -> ENET driver -> Nuvotech driver -> SCSI -> 68net

 

Any feedback on this understanding ?

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18 hours ago, ronan said:

 

I was not aware of that indeed. I just had a quick look. If I understand well the ENET driver is not a hardware driver but communicates directly with the hardware drivers.

 

If I understand well this sums up as :

 

Mac TCP -> ENET driver -> Nuvotech driver -> SCSI -> 68net

Yes, I think that is a correct understanding. If you implement Apple's documented ENET driver interface, then your driver will be compatible with AppleTalk Phase 2 as well as MacTCP.

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