RaSCSI Development Thread

[Crutch]

Yes that’s correct, it’s trivial to add termpwrto a Plus.  Plus SCSI can be flakey in various minor ways (and the earlier Plus ROM revs have an issue that can lead to getting stuck at a black screen on soft reset if trying to boot from a SCSI device) but none of them are too major and basic config tweaks can be used to get a SCSI2SD working with a Plus after a bit of hassle.

 

[NF_]

@NF_ My understanding is that the SE and II both provide SCSI term power, and the Plus is the only Mac that doesn't (fun fact:  the circuits for providing it, to my knowledge, were partially implemented, but it was disabled from the factory.  It can be enabled by adding a couple missing components I think, but the Plus' SCSI implementation isn't entirely standards compliant, so it may or may not work as expected.)

That's interesting.  Thank you for clarifying.

 

[landoGriffin]

Its ALIVE!!!! RaSCSI 2.2 is up on Tindie!!!

https://www.tindie.com/products/21131/

For all of those who are still interested in getting started with RaSCSI, feel free to grab one. 

For 68kmla friends, there is a promo code: "LABORDAY2020" that is good through Tuesday, Sept 8 for $10 off. 

I've never done this Tindie thing, so let me know if there are issues with the listing.

 

[NoTrueSpaceman]

For all of those who are still interested in getting started with RaSCSI, feel free to grab one. 

Ordered!! Thanks for putting it all together! :ii: The parts I ordered arrived weeks ago but the PCB manufacturer delayed the boards over and over (grumble grumble) so I don't have them yet. >

 

[landoGriffin]

Ordered!! Thanks for putting it all together! :ii: The parts I ordered arrived weeks ago but the PCB manufacturer delayed the boards over and over (grumble grumble) so I don't have them yet. >

Awesome! Thanks for the order  

 

[sonique6784]

For all of those who are still interested in getting started with RaSCSI, feel free to grab one. 

Thank you so much for putting that together!

Is there any chance to get it ship to Australia? (Currently not supported)

 

[landoGriffin]

Thank you so much for putting that together!

Is there any chance to get it ship to Australia? (Currently not supported)

Absolutely! Give me a few minutes..

 

[landoGriffin]

Thank you so much for putting that together!

Is there any chance to get it ship to Australia? (Currently not supported)

Australia is added! Please let me know if other folks need different countries. I was just too lazy to try to predict what countries to calculate shipping for!

If you want to know what the shipping rate is, I'm using USPS Priority Mail Small Flat Rate Boxes. Its shipping from Iowa in the US.

Also, if you want to order multiple, message me, and I'll figure out how to combine shipping.

 

[landoGriffin]

And just a reminder.... I'm on the RaSCSI discord channel a lot. Feel free to join the discussion! https://discord.gg/QChjK4

 

[sonique6784]

Thank you so much, I've tried to join Discord, but it says the invite is invalid:

https://support.discord.com/hc/en-us/articles/360001556852

 

[landoGriffin]

Thank you so much, I've tried to join Discord, but it says the invite is invalid:

https://support.discord.com/hc/en-us/articles/360001556852

I guess the links are (by default) only valid for one day. Oops!

This one should be good forever...

https://discord.gg/PyS58u6

 

[NF_]

The SCSI2SD V4 uses a 7406 which are <$1 each, maybe that's a possible alternative?  Looking at the datasheet it appears to be able to sink 48ma

https://www.digikey.com/product-detail/en/texas-instruments/SN7406DRG4/296-48954-1-ND/8635017

Hey @Torbar, I was thinking about your suggestion and didn't want it to go unnoticed.  Looks like the SN7406D can sink 40mA, which is closer than the 245 only sinking 20mA, but still not within spec (48mA).  Another issue is it provides six buffers/drivers versus the eight on the 74xx245 and 74LS641-1. So the pcb would require some rework, but still not meet the SCSI spec.

But it is a good suggestion, and I have added it to the transceiver comparison page in the wiki.

 

[Byte Knight]

Its ALIVE!!!! RaSCSI 2.2 is up on Tindie!!!

https://www.tindie.com/products/21131/

Ordered - thanks again for doing this!

I also ended up ordering the wifi modem with blinking LED's from Italy.  I'm a sucker for blinking lights...

 

[Trash80toHP_Mini]

Its ALIVE!!!! RaSCSI 2.2 is up on Tindie!!!

https://www.tindie.com/products/21131/

Congratulations on reaching this milestone! Been watching with great interest since day one, fabulous stuff, gang.  :approve:

 

[Byte Knight]

Any idea if the RaSCSI would work with an Apple II w/SCSI card?  I could see it as another HD option and the GS supports CDROM.

 

[landoGriffin]

Any idea if the RaSCSI would work with an Apple II w/SCSI card?  I could see it as another HD option and the GS supports CDROM.

The hardware should be compatible. But, there might be some software tweaks to get it working. The Mac is picky about what firmware types are reported by the SCSI device, but I'm not sure about the Apple II.

I have also tested the hardware/software with a Ubuntu 20 system, and it works fine.

I'm going out on a limb that if you tried it, there is a forum full of people who would be willing to help troubleshoot if it didn't work  

 

[landoGriffin]

Congratulations on reaching this milestone! Been watching with great interest since day one, fabulous stuff, gang.  :approve:

Thanks! I'm hoping that more people are able to take advantage of this project :-D  

 

[sonique6784]

That’s great, Ubuntu 20.04 got LTS.

I’ve ordered my RaSCSI as well

 

[ScutBoy]

Order placed. Looking forward to playing around with this!

 

[quorten]

Nice to see that it can come as a kit... solder paste is use it or loose it and this would probably make a good project to use up some of my spare bismuth-tin-silver solder paste.  Especially, the "through hole reflow" technique uses quite a bit of paste.