15 February 2023, 01:53 | #1 |
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Introducing the N2630 CPU Card
I am pleased to announce the N2630 CPU card for the Amiga 2000 family of computers. The N2630 is completely open source and can be built by anyone for non-commercial purposes.
The N2630 is a 50MHz Motorolla 68030 CPU card with additional RAM and IDE device port for the Amiga 2000 family of computers. It is installed in the CPU slot where it immediately upgrades the system to a 68030 processor with FPU, up to 264 megabytes of Fast RAM, and an IDE port. The N2630 is intended to be an evolution of the A2630 card. Features
Find the project on GitHub: https://github.com/jasonsbeer/Amiga-N2630 |
15 February 2023, 05:07 | #2 |
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Awesome!
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15 February 2023, 06:15 | #3 |
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Great work m8, good to see the IDE/CF card support ...what are your plans (if any =) for the reserved P90x jumpers?...ie; SCSI perhaps? [makes me wish I hadn't sold my A2000 machines long ago =^]
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15 February 2023, 06:16 | #4 |
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That's amazing! Thank you for all of those hours of work.
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15 February 2023, 07:15 | #5 |
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Wow, that is simply awesome.
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15 February 2023, 08:19 | #6 |
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This is amazing. Especially because of the CF card slot. How much does it cost? Haven't seen it mentioned but I think this is an upgrade which definitely worths every penny.
BTW I was wondering how difficult would be a ZII/ZIII PCMCIA card slot...? Just because of the PCMCIA network cards for big boxed Amigas. Nowadays I feel it more and more difficult to find a Zorro netvork card. |
15 February 2023, 12:17 | #7 | ||
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Great work. I am sure this will be interesting to a lot of people. I think the only other A2000 68030 product available today is the TF536 with a CPU slot adapter card? Oh and perhaps PiStorm if that counts?
A clock-port would have been an interesting addition. Maybe put that down as an enhancement if you have any spare pins? Why did you call it "Zorro 3 Fast RAM"? Is it because it is mapped into the Zorro 3 address space? You're not the only accelerator designer to do that, I think the TF cards also do that. Is that because the normal 32-bit address space for accelerator memory is only 128MBytes? Quote:
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https://icomp.de/shop-icomp/en/shop/...-surf-100.html https://amigakit.amiga.store/surf-zo...vof0v4j3o6gauf Last edited by alexh; 15 February 2023 at 12:33. |
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15 February 2023, 16:57 | #8 | |||||
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Thanks for the comments, everyone. Much appreciated!
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15 February 2023, 17:12 | #9 |
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Quick estimate is ~$150-200 US each. This really depends on where you get your parts and what the current pricing/availability is.
The common logic and passives are around $50-$60 total. The boards are going to be around $30 each with ENIG finish (you must buy 5). The 68030 and 68882 are going to be from $25 - $40 each. The Xilinx CPLD's are the big wildcard right now. I have been getting them from AliExpress...no other choice. I found a good supplier and am paying approximately $6 each, but you have to buy 5 or 10, depending on the part. As always, these projects are best if you go in with some friends to build multiple copies. |
15 February 2023, 21:03 | #10 |
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Hmm, has the FPU that TF does not have but does it have DMA?
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15 February 2023, 21:31 | #11 |
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Good work! Having an accelerator card which actually plugs into the A2000 CPU slot is very nice... and one that improves on the A2630 is very cool too.
If I had not done so much work hacking and overclocking my A2630, well that's another long story. P.S. My last A2630 speed-up hack (which might help with your next firmware release) is located here: https://eab.abime.net/showthread.php?p=1523692 Last edited by SpeedGeek; 16 February 2023 at 01:25. |
15 February 2023, 21:47 | #12 |
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15 February 2023, 22:02 | #13 | |
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Quote:
FYI...Here is the MC6800 state machine timing diagram for the N2630. https://raw.githubusercontent.com/ja...INE%20READ.png |
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15 February 2023, 23:36 | #14 |
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@jasonbeer: on your github it says that fast ram is not available in 68000 mode. Would it be possible to make the Zorro2 fast ram available in 68000 mode, like the original A2630?
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16 February 2023, 01:29 | #15 |
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Your information source is in error. The original A2630 does NOT make the on-board Fast RAM available in 68000 mode.
Last edited by SpeedGeek; 16 February 2023 at 13:25. |
16 February 2023, 01:35 | #16 |
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My old G-Force 030/40 GVP CPU Control shuts down all fast ram.
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16 February 2023, 04:14 | #17 |
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16 February 2023, 09:42 | #18 | |
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Quote:
Another followup question to the 68000 mode: would it be possible to allow the IDE port to work in 68000 mode? Reason for asking is that it would make it super convenient to use in 68000 mode as it would still have access to the harddrive. |
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16 February 2023, 13:55 | #19 |
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16 February 2023, 18:54 | #20 | |
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Quote:
After thought...missing the obvious...the muxing hardware already exists. I would have to investigate if the existing hardware could also be leveraged with the IDE. The needed signalling may not all be there. |
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