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Author Topic: Enterprise Deployment Attempt Over FPGA. (Read 161111 times)

Offline rampa

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WD1770 working OK!
« Reply #285 on: 2023.January.01. 22:37:19 »


   Thanks very much to everybody. Disk controller is working ok now....
 

Offline Zozosoft

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Re: WD1770 working OK!
« Reply #286 on: 2023.January.02. 02:30:59 »
Thanks very much to everybody. Disk controller is working ok now....
Great!
What is the final solution?

Offline rampa

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Re: Enterprise Deployment Attempt Over FPGA.
« Reply #287 on: 2023.January.03. 10:41:58 »

 Not sure what fixed the problem (may  be a compund)

- Implemented exact seek times.
- Got all the floppy lines from the "virtual" floppy
- Reimplemented the track functions.
- Implemented CRC calculation.


Offline Zozosoft

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Re: Enterprise Deployment Attempt Over FPGA.
« Reply #288 on: 2023.January.25. 22:59:51 »
Now when the full machine working right in FPGA...
Possible to put FPGA core of Nick and Dave to any FPGA chip, and produce replacement chips which can be installed to real chips place? Repair dead machines.

Offline Kyp

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Re: Enterprise Deployment Attempt Over FPGA.
« Reply #289 on: 2023.January.25. 23:28:19 »
It's possible but it's not that easy, doing an FPGA implementation is much easier than doing an actual chip replacement :(
To do a real chip replacement needs a lot of extra work.

Offline ergoGnomik

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Re: Enterprise Deployment Attempt Over FPGA.
« Reply #290 on: 2023.January.26. 16:33:19 »
And it is even harder to make it fit in the space and volume of the original QFP package.

Offline gflorez

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Re: Enterprise Deployment Attempt Over FPGA.
« Reply #291 on: 2023.January.26. 17:05:08 »
I think the main problem is to "tie" the modern technology with the old. The two devices behave the same on video or sound, but they are very different inside.

Kyp says that FPGA is easier, I think because in some way it is schematic. But he also says that a physical device made of real components can be created with the information. After all what he manages to design a FPGA core is a hardware descriptive language.

Imagine the possible turnarounds taken by the designer to make the chips real on the 80's, It can be that the contemporary FPGA circuit doesn't need so much pins for Dave and Nick, but you still need all the signals to "transplant" the hypothetical clone chip to the real Machine, to be able to return it to life...

-

I am not the best source of FPGA knowledge, sorry if I can't give a better explanation.

Offline ergoGnomik

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Re: Enterprise Deployment Attempt Over FPGA.
« Reply #292 on: 2023.May.01. 19:52:06 »
After spending a reasonable time, I have been able to test the Enterprise core on several fpga boards such as: ZXuno, N-Go ( ZXNext), MiSTer, NeptUNO, MiSTica and SiDi.
Reading that the second ZX Spectrum NEXT batch is about to start being manufactured reminded me that there were attempts running  the Enterprise FPGA core on NEXTs or N-GOs. Are there any news about that?

Offline gflorez

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Re: Enterprise Deployment Attempt Over FPGA.
« Reply #293 on: 2023.May.02. 08:30:23 »
Yes, there is a preliminary core for the Next(N-go), but it is very old now. Kyp is actually adding EXDOS(floppy controller) and better SD-cartridge management.

Offline Tuby128

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Re: Enterprise Deployment Attempt Over FPGA.
« Reply #294 on: 2023.May.02. 11:15:18 »
Now when the full machine working right in FPGA...
Possible to put FPGA core of Nick and Dave to any FPGA chip, and produce replacement chips which can be installed to real chips place? Repair dead machines.

 There is several fpga implementation on the internet, where DIP socket chips are replaced with fpga.
 The problem is with nick and dave, that the package is hard to realise. There is not much space.
It is impossible to get an Fpga with that package. On the data/adress lines some level shifter from 5V to 3,3V needed, because the fpga cannot recive 5V on its pinouts. The input burns out.
 What I can imagine, is to open a fpga package, remove the die, put it into a nick/dave package, and make the bonding with golden wires. But this does not solve the problem with 5V -> 3.3V.

Offline gflorez

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Re: Enterprise Deployment Attempt Over FPGA.
« Reply #295 on: 2023.May.16. 09:05:31 »
Yesterday, a beta of the Enterprise core was presented on the Retrocrypta Twitch channel, with SD, Floppy and mouse working all at the same time on a NeptUNO FPGA. The video can be long and boring for non Spanish viewers, because a lot of the time Rampa(EXDOS floppy controller and Dave sound) and Kyp(Video, SD and main), are discussing with Ron , the  speaker, about some aspects of the implementation.  This while a just launched FPGA system named ZX3+ is discussed. Probably not the definitive Enterprise FPGA, but time will tell. Maybe if one version is launched with a full keyboard, not the shortened one of the N-Go FPGA.

On Twitch the old videos have a limited time to be shown, so hurry up.

Offline Tutus

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Re: Enterprise Deployment Attempt Over FPGA.
« Reply #296 on: 2023.May.16. 09:28:10 »
:smt038 :smt038 :smt038

Offline SlashNet

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Re: Enterprise Deployment Attempt Over FPGA.
« Reply #297 on: 2023.May.16. 14:09:02 »
Wolf? WOW! :shock:

Offline MrPrise

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Re: Enterprise Deployment Attempt Over FPGA.
« Reply #298 on: 2023.May.16. 15:43:10 »
Awesome!

Offline geco

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