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68net - a modern SCSI to Ethernet board

ronan

Well-known member
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 ?

 

Dog Cow

Well-known member
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.

 
I have a few of the older Asante EN/SC adapters including one for the Powerbook that I've used with various 170's and 180's over the years.  I routinely use the Micro EN/SC connected by a short ethernet cable to a little IOGear Ethernet->WIFI dongle which is in turn powered by a USB cable connected to a small battery pack.  It looks a little silly but I wind up with a fully cable-free (or at least untethered) Powerbook 180 experience with network connectivity to the netatalk AppleShare Linux box in the basement. 

What I'm wondering is if you could replicate the Asante Micro EN/SC power solution which is to get power from the ADB keyboard port?  That wouldn't help for any pre-ADB Macs (obvs) and I honestly don't know what kind of power the ADB port provides, but it works for the Asante, maybe it could work for this.  Personally would LOVE to have this board available as the vintage SCSI->Ethernet adapters are rare as hens teeth these days.

67741166_1334430500039857_1557339563683217408_o.jpg

 
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ronan

Well-known member
Hi everyone !

I have been really really busy with life and work last year but I really wanted to make this project work !

I have been struggling in the last week with implementing correctly reselection on 68net which was really tricky because timing are tight and driver does not behave always as I would expect.

But anyway I finally managed to receive packets using 68 nets !! It's not really stable at the moment but I will work on this during the coming weeks.


IMG_6280.jpg



I hope this can be a reliable ethernet hardware for our mac in a near future.

Happy new year to everyone :)
 

ronan

Well-known member
Little updates here :)

I improved a bit stability and was able to load an html page in Netscape and connect to an Apple Share Server using 68net :D


IMG_6316 2.jpg

IMG_6317 2.jpg


IMG_6318 2.jpg


Everything is half stable for the moment, I need to improve the reselection algorithm which seems to take a lot of time before reselecting the Macintosh some times. Also it seems that after reselection occasionally the communication hangs on the Message Out phase.

By the way if anyone knows a good way of debugging scsi (on the lowest level) I would be insterested. I think RaSCSI with scsimon could work but maybe there's a better solution.
 
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ronan

Well-known member
I can’t wait to order one when they become available 😁😁
I need to make some little hardware fixes, and find a way to manufacture a few of them before selling. I will keep you updated but this make take some time as I'm still busy with life/work :(
 
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