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Author Topic: FPGA Replay Board  (Read 821025 times)

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Offline freqmax

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Re: FPGA Replay Board
« Reply #119 on: September 07, 2011, 12:31:56 AM »
Quote from: wolfchild;658220
Good luck finding such a cable!  Failing that, you can't go very wrong buying one of my VGA to SCART cables ;)


Finding?.. Make! :P :D
 

Offline freqmax

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Re: FPGA Replay Board
« Reply #120 on: September 14, 2011, 03:42:08 PM »
He proberbly awaits a production time slot from the assembler while doing other things @ work ;)
 

Offline freqmax

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Re: FPGA Replay Board
« Reply #121 on: September 14, 2011, 06:18:36 PM »
Quote from: billt;659355
Are there enough pins on this expansion port to do floppy port directly in the motherboard FPGA? Dunno. If not, then need an addon board with another FPGA or CPLD or or Xcore or something to bridge between the expansion port and whatever you imagine connecting to it, floppy or c2n (whatever that is) in your case.


The FPGA Arcade (and proberbly Minimig too) have generic I/O pads which can be used directly with a using a few voltage level converters. And the usual power supply.
 

Offline freqmax

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Re: FPGA Replay Board
« Reply #122 on: September 14, 2011, 11:05:32 PM »
Read the schematics and check out the pictures.
 

Offline freqmax

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Re: FPGA Replay Board
« Reply #123 on: September 15, 2011, 08:00:24 PM »
Quote from: mikej;659421
I'll take the parts back to China on Tuesday next week and drop them off with the company which is doing the volume production.
This will actually speed up the volume deployment, but is more risky as I wanted to test the boards before paying for the set up and production stencils (which is kinda expensive).

That bad with assemblers nearby?

Otherwise try at least to get one express mailed back for verification. And send som test-jig so the manufacturer can verify.Though anything "Chinese" should be heavily quality controlled ;)

I just hope you don't end up with a few hundred circuit boards that can't even be repaired.

Quote from: mikej;659421
The 68060 board is still being defined, although the prototype is running well. It is unlikely to have pass-through connectors for SI reasons

Use some daisy chained method instead?

Quote from: TheGoose;659461
6. Did I mention it's real?

It's real? I thought we all lived in the McEwen matrix.. ;)
 

Offline freqmax

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Re: FPGA Replay Board
« Reply #124 on: September 15, 2011, 08:33:36 PM »
Complex resoldering of 50+ boards can be a pain ;)
 

Offline freqmax

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Re: FPGA Replay Board
« Reply #125 on: September 16, 2011, 05:43:50 PM »
C= Office?

Commodore resurrected? ;)
 

Offline freqmax

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Re: FPGA Replay Board
« Reply #126 on: October 01, 2011, 07:28:28 PM »
A PSU question just got me thinking. How much mean and peak power does the FPGA Replay use?
 

Offline freqmax

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Re: FPGA Replay Board
« Reply #127 on: October 06, 2011, 03:51:22 PM »
Quote from: mikej;662659
I realize it is frustrating, and it is taking too long.


In comparision with other projects this one is at lightning speed. And there is actually hardware to deliver.
 

Offline freqmax

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Re: FPGA Replay Board
« Reply #128 on: October 07, 2011, 02:10:08 PM »
Quote from: mikej;662792
All the other changes are layout related to improve production.


Any list of such changes? (curious ;) )
 

Offline freqmax

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Re: FPGA Replay Board
« Reply #129 on: October 08, 2011, 12:00:57 AM »
Quote from: mikej;662875
The base option (no SVHS/Composite) will be 199 Euro and with SVHS/Composite is 219 Euro.

Including VAT the price will be 249Euro and 274Euro for this batch.

Quote from: mikej;662875
It is possible the price of any future run will be ~20 Euro lower - that's what volume does.

My VAT registration is not complete yet, and I have paid VAT on components and assembly, so I need to charge the VAT inclusive price even to US customers for these "samples".


So this means that when the VAT registration completes you can charge 199 EUR ?
 

Offline freqmax

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Re: FPGA Replay Board
« Reply #130 on: October 08, 2011, 04:45:28 AM »
Quote from: amigadave;662903
No, but he has confirmed that he will be shipping it any time now and I have no doubt that it will arrive in time to take to the AmiWest 2011 Show with me.


Maybe UPS can be fast enough?, at least they deliver overseas from USA to Europe in 1-2 days. For a price thoe ;)
Or if you know someone that will fly from the place where mikej lives to USA and bring it in a briefcase, it might be possible to make it?
 

Offline freqmax

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Re: FPGA Replay Board
« Reply #131 on: October 11, 2011, 05:27:41 AM »
Natami N68k is a whole another ballgame. It's done in AHDL which is more specialized for the FPGA they use at the price of flexibility and portability. There's likely more people working on the core as the current FPGA Arcade source is closed in practice atm. It's also that the original source is an 68000 in a hardware description language (HDL), which has then been modified into a 68020 core.
 

Offline freqmax

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Re: FPGA Replay Board
« Reply #132 on: October 11, 2011, 03:38:06 PM »
Quote from: matthey;663223
How big of cache?


The amount of SRAM in a FPGA is quite limited. So maybe a "real" cache should be built with off-chip SRAM. But..

Earlier results show 256 byte instruction- and data cache improves performance to twice that of A4000 68040 @ 25 MHz. Dhrystone 9868, MFlops 10.30 measured with sysinfo.
 

Offline freqmax

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Re: FPGA Replay Board
« Reply #133 on: October 11, 2011, 04:36:42 PM »
Quote from: mikej;663234
1 block ram is about 2K byte. This is quite sufficient as a cache in this case.


Quite enough then ;)

Motorola caches:
68000 - none
68020 - 256 B I-cache
68030 - 256 B
68040 - 4 kB
68060 - 8 kB

Quote from: Darrin;663237
Also, the Chameleon's soft 68000 isn't really running at 110 MHz, despite what SysInfo says.  :-)


Run a C compilation 10 times in sequence. That ought to give a sufficient comparision ballpark figure when Sysinfo fails.
 

Offline freqmax

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Re: FPGA Replay Board
« Reply #134 from previous page: October 11, 2011, 06:08:56 PM »
I hope there won't be any huge list of extra instruction ISA that all Amiga now should implement. Rather a few instructions that would give a great boost.

The FPGA capacity is limited.

Bloatwarning ..
« Last Edit: October 11, 2011, 06:11:40 PM by freqmax »