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RogerWilco486
Boyertown, PA USA

Posted Mon Jan 27, 2020 11:43 am

I wanted to add this picture of the NOS 68030RP25C I used. This little guy popped up in the States on eBay months ago. It's kind of nice to have one that isn't the typical re-badge so common for eBay. Not that there's anything wrong with those, 030's seem to run whatever clock you ask of them no-matter what's printed on the lid..

Still, this one is certainly a nice specimen.
IMG_6559.jpg

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RogerWilco486
Boyertown, PA USA

Posted Wed Jan 29, 2020 8:52 am

Firebird completely finished:

Foxconn PCI slots salvaged from Pentium-II motherboard, and very nice 100-pin and 36-pin AliExpress edge card sockets. For the 54-pin socket I cut two 36-pin sockets in half with a 3D printed miter box and hack saw blade. Just a bit of super glue and a steady hand was all it took to make a nearly invisible bond.

Afterwards the Firebird was run through the ultrasonic cleaner with a flux removing solution and the result is a nice clean daughter board....
IMG_6568.jpg
IMG_6571.jpg
IMG_6577.jpg
IMG_6579.jpg
IMG_6581.jpg

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RogerWilco486
Boyertown, PA USA

Posted Tue Feb 04, 2020 10:26 am

Thought I'd add a picture of the DSP. This was salvaged from a crusty old Mac Quadra 660AV motherboard....
image0.jpeg

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G8rduc
North Florida

Posted Sun Mar 15, 2020 11:36 am

Any progress on this beautiful project?

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RogerWilco486
Boyertown, PA USA

Posted Tue May 05, 2020 12:34 pm

Sorry, I somehow missed this... yep! It's all mounted up in a case with an A3660, X-Surf 100, RapidRoad, 10K 73GB SCSI drive, and working great. I ended up using one of my other spare 3000's for it's chassis, I'll get around to having the other case power coated eventually and stick the now homeless 3000 motherboard in that.

Here's the completed build, sorry it's not the best picture.
IMG_6662.jpg
And here's the A3660 I built for it.
IMG_7554.jpg
G8rduc wrote:
Sun Mar 15, 2020 11:36 am
Any progress on this beautiful project?

User avatar
ubermick
California, via Cork

Posted Thu Mar 04, 2021 11:32 am

Apologies for being massively ignorant given my knowledge of microelectronics is nonexistent. But this board absolutely FASCINATES me, and I'd love one - but the consumer in me wonders if its at all possible to develop a board similar to this, but with an ATX form factor so it can sit in a standard case and use standard ATX power supplies?

Understand the X5000 is KIND OF that machine, but that's a commercial product (borderline vapourware) I'm talking something more in line of this exact thing, community driven, but doesn't require using or sourcing old cases and parts to house them. (Better yet if it also had USB inputs to use modern keyboards/mice!)

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A10001986
1986

Posted Thu Mar 04, 2021 1:46 pm

If you ever want to use the DSP, you need different chips for U122/U123/U124/U701. The only combination that works with stock 030 and all the 040/060 accelerators we could test (CSMK2, CSMK3, CSPPC, WE, 3640, 3660, PP&S Mercury) is ATF22V10C-5JX for U122, U123, U124 and ATF16V8x-15 (no matter which version, as long as it's 15ns) for U701. Also, you need new PLD/JEDs for some of those, found here: https://github.com/realA10001986/Amiga

There is a very long thread over at a1k regarding the DSP, and our long and cumbersome way to get it going.
https://www.a1k.org/forum/index.php?threads/76673/

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RogerWilco486
Boyertown, PA USA

Posted Thu Mar 18, 2021 8:06 am

Thank you for the info! I had no idea there was progress with the DSP being made.

I already ordered the required PLDs so those should be en route soon.

I just caught up on the last few pages of that long thread, pity it looks like I'll need to fit a patch wire to bond RW and R_W...although with the sockets being in place I hope I don't have to remove them so I can fit the wire. I really do hate SMD PLCC sockets. Maybe I can carefully slip some thin enameled wire under them...

Since Hese doesn't share the design files I can't tell for myself, but are you aware of any vias on the bottom of the PCBs that could be used to bond those two nets?

A10001986 wrote:
Thu Mar 04, 2021 1:46 pm
If you ever want to use the DSP, you need different chips for U122/U123/U124/U701. The only combination that works with stock 030 and all the 040/060 accelerators we could test (CSMK2, CSMK3, CSPPC, WE, 3640, 3660, PP&S Mercury) is ATF22V10C-5JX for U122, U123, U124 and ATF16V8x-15 (no matter which version, as long as it's 15ns) for U701. Also, you need new PLD/JEDs for some of those, found here: https://github.com/realA10001986/Amiga

There is a very long thread over at a1k regarding the DSP, and our long and cumbersome way to get it going.
https://www.a1k.org/forum/index.php?threads/76673/

User avatar
A10001986
1986

Posted Thu Mar 18, 2021 8:38 am

Most of us solved the RW-R_W issue by soldering a wire to the GALs, at the top most position on the pin in order not to stress the socket spring. It's easiest to make a wire noose around the pin close to where it enters the GAL package.

Also, please note that the info in my Mar 4 posting is partly obsolete. U701 needs to be either 7ns or 15ns, depending on your accelerator card (stock 68030 works with both), and those two require two different PLD/JEDs. It's all on my git.

User avatar
RogerWilco486
Boyertown, PA USA

Posted Thu Mar 18, 2021 10:24 am

Yep, I got myself caught up to speed and looked over the spreadsheet too. I actually already have some 7ns ATF16V8s here, so once I get my Digikey order I’ll be able to use either combos.

I assume an A3660 behaves the same as an A3640 since they are essentially the same board?

A10001986 wrote:
Thu Mar 18, 2021 8:38 am
Most of us solved the RW-R_W issue by soldering a wire to the GALs, at the top most position on the pin in order not to stress the socket spring. It's easiest to make a wire noose around the pin close to where it enters the GAL package.

Also, please note that the info in my Mar 4 posting is partly obsolete. U701 needs to be either 7ns or 15ns, depending on your accelerator card (stock 68030 works with both), and those two require two different PLD/JEDs. It's all on my git.





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