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K55

RaSCSI Development Thread

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I used the last cracked version of eagle before autodesk acquired them and turned it into a pay as you go service which seems to be "catching on" these days. 

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Landlord notions of Intellectual Property protection have been around almost forever.***

 

oP hooked me up with a full, dongled version of PowerPCB to run on my '98 box. To run multiple seat configs back in that day, PADS only provided one key and all sessions had to be actively networked to the dongled machine. Good and bad there, you could use X number of sessions at any one time on a much greater installed base of CAD seats. Almost nobody was doing this level of work on an amateur basis in the 90s as compared to today, things really have been kicked into high gear by Rpi and the fruit loops.

 

At any rate, from what I've gathered in the past, I'll need a fully lic .  .  .  erm  .  .  .  dongled package to do Gerbers for a PCB the size of the DiiMO/TwinSpark SE/30 adapter board. Is that still the case? What might the options be for getting a larger board made? It may need to be four layers as well, has anyone gone with either upscale option from SEEED or the like?

 

 

 

*** auto-tldr'd a mini-rant again. OOPSIE! Old timers will probably have heard this already, but newcomers may be interested:

 

IIRC the user group teachers had to boot the PhotoShop sessions sequentially on each machine while networked and then disable networking in order to move on the next machine to start that session in the classroom. Adobe didn't bother doing that with Illustrator in the day, but now to upgrade past my licensed copy of AI10 I'd have to rent PhotoShop in a Suite along with it too. That's never gonna happen, never used it, never will. As a licensed FreeHand user I had the chance to upgrade to MacroMedia's FreeHand Graphics Studio which included Xres so I stubbornly used that instead. Because Adobe never anted up with a similar deal on their cash cow for loyal users of AI and its related products, so far I've refused to even play with any of the many copies of Photoshop I've acquired on various HDDs in the collection. PTUI! :p

 

Gotta get into the GIMP!

Edited by Trash80toHP_Mini

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Ooooh, so very interested in this for my Powerbooks. I saw the original X68000 project recently and thought it might be adapted to the Macs, glad to see someone's already running with it!

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Mechanical cad? Not sure, I just design and layout boards in it. The other thing I like is that you can design a board without making a schematic if you want to, for very simple boards and adapters this is a time saver.

Edited by 360alaska

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https://en.wikipedia.org/wiki/DesignSpark_Mechanical

 

I've gotta try this one out, it seems it has a modeling clay approach to building designs, sort of a 3D version of Illustrator's design-combine-divide 2D shapes model. Is that how other modeling package tools work? I was really excited when I saw these features demo'd in the Dreams 2D CAD package for the Mac well before these operations became available in Illustrator or FreeHand.

 

First time I've heard of the Freemium marketing/pricing strategy as a thing. It's a refreshing concept when compared to (crippleware) demo versions model from back in the day.

 

 

edit: it sure would be nice if they listed linkage to system requirements for the programs somewhere that page. ::)

Edited by Trash80toHP_Mini

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Yeah, it's kinda nifty as a business model... almost wish Sketchup had a subscription model because I need more than the free provides, and even the student license is too high.
Fusion360 at least has a free (but fully functional) hobbyist license you just renew every year. Still trying to figure that out for my 3D priting designs.

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CAD, but the old version. I'm trying to learn OrCAD and Altium Designer also.

When you say "CAD", what program are you specifically referring to, A lot of them have 'CAD' in the name.

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Still a work in progress. I've been trying to secure a supply of the bus chips so that I can make more than 2 of these at a decent price.

Taking a bit but should be done soon. After I get a batch of these done I'll release the eagle files.

 

If you need one /right now/ I think there's a guy in japan with a board but its proprietary connector for the pc98 afaik. :approve:

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Sorry for not updating more :-/ Been busy with life stuff.

 

Anyway I've made a new github (lost access to my old one) so this is the first thing on there.

https://github.com/fran-cap/RASCSI-68kmlaver

That has the eagle files, the extra libraries I used, and information about parts.

 

I did a cost estimate and it would come out to around $35+s/h per so for each board, perhaps cheaper if I can find a good supplier.

Going to try and post more stuff soon.

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Awesome work on this PCB.

 

I did a cost estimate and it would come out to around $35+s/h per so for each board, perhaps cheaper if I can find a good supplier.

Going to try and post more stuff soon.

 

Is that assembled, or just for the PCB? hopefully the latter :)

Edited by aperezbios

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PCB alone would be as cheap as you could make it ;)

The $35 would be a at cost full assembled board. If you ordered from your local batch house it might be $20 for 10 boards? ($2ish per, don't quote me on that)

 

Depends on how long you want to wait. If you need a board /NOW/ I think theres a japanese version for $100+intl shipping, and you need to buy a pi.

 

I'm probably going to do a mini design tomorrow to see if I can get it to 1 pi (harhar) wide and/or using a 50pin scsi for external use.

 

Edit: I'm looking for work atm, so I'll try to post updates as quick as possible in between application emails :lol:.

Edited by K55

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I'm probably going to do a mini design tomorrow to see if I can get it to 1 pi (harhar) wide and/or using a 50pin scsi for external use.

As opposed to 1 pi squared :lol:

 

c

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2 updaterinos, both pushed to the git. 1. is the final v1. version of the internal board as small as I can get it:

post-4241-0-83093700-1511130356_thumb.png

 

And here is a din-25 version for use externally. Would be good for people with multiple computers.

post-4241-0-02182800-1511130361_thumb.png

 

Probably will order the din25 version soon. Will will see :^)

Edited by K55

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I've just ordered 10 pcbs of the internal version, but I'll probably only use 4 of them so if you're interested, I'll sell the excess at cost price (~2€) + shipping.

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On 5/5/2017 at 7:45 AM, defor said:

I personally wouldn't even have bothered supporting the zero, considering how slow it should be

 

The Pi Compute Module is now up to speed with the current full size Pis, and tiny.  It'd require a different board layout altogether with the DIMM-style module slot and possibly other support gubbins, like USB and Ethernet if you want to use those.  But with Bluetooth and Wifi on board, maybe you don't need to.

It's also small enough that a Powerbook 2.5" SCSI version might be possible, I'm just sayin' ;)

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On 5/5/2017 at 7:45 AM, defor said:

1MiB/sec was measured off a Pi3, and GPIO speeds are bound to the cpu speed

 

Okay, I skimmed through the Garble-translated Japanese RaSCSI page, but I can't see how they're achieving that.  Are they running some real-time lib alongside Linux?

/edit/ Appears not, if I'm reading this right ... which suggests a possible path to speed improvements.
 

Quote

Since RaSCSI controls the SCSI signal using GPIO, it is necessary to use it with low latency as much as possible. Therefore we recommend using it in CUI mode. Please stop unnecessary service as much as possible.

 

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