| 6502.org http://forum.6502.org/ |
|
| Breadboard FPGA for $69 http://forum.6502.org/viewtopic.php?f=10&t=4217 |
Page 1 of 2 |
| Author: | cbmeeks [ Wed Aug 03, 2016 3:44 pm ] |
| Post subject: | Breadboard FPGA for $69 |
What do you guys think about this FPGA dev board from Xilinx? http://www.xilinx.com/products/boards-a ... lhae0.html I could see dropping that into a SBC to do all kinds of useful stuff. Maybe running side-by-side with a real 65C02. |
|
| Author: | BigEd [ Wed Aug 03, 2016 7:39 pm ] |
| Post subject: | Re: Breadboard FPGA for $69 |
Just to summarise what you get for $69: - just .7” by 2.6” and in 48 pin breadboard format - 46 I/Os from the FPGA - Xilinx® Spartan®-6 LX4 FPGA with 24k block RAM and 600 slices - USB port - 4 LEDs and two buttons |
|
| Author: | commodorejohn [ Wed Aug 03, 2016 7:49 pm ] |
| Post subject: | Re: Breadboard FPGA for $69 |
Of course it all depends on what you need and in what kind of form factor, but this looks like a lot better deal to my (admittedly inexpert) eyes. |
|
| Author: | hoglet [ Wed Aug 03, 2016 7:53 pm ] |
| Post subject: | Re: Breadboard FPGA for $69 |
Are you specifically interested in something with a DIL form factor? How important is 5V tolerance? If it's important, make sure you check out the OHO GODIL modules: http://www.trenz-electronic.de/products ... ronik.html They use an older Spartan 3E FPGA (XC3S250E/XC3S500E), but do have on-board 3.3V/5V level shifters, so you can plug into an system that uses 5V levels. I used these in the ICE-T65/Z80/6809 work: https://github.com/hoglet67/AtomBusMon/wiki Dave |
|
| Author: | BigEd [ Wed Aug 03, 2016 7:59 pm ] |
| Post subject: | Re: Breadboard FPGA for $69 |
Quote: this looks like a lot better deal Which is to say, the Arty board from Digilent, $99 for 5200 slices, 100k RAM, Artix-35T FPGA, 256MB of 16-bit wide SDRAM, with USB and Ethernet. And 8 LEDs! Much more of a standalone board than a component in its own right - much bigger. And needs up to 3.5 Amps. It has 32 I/Os in PMOD form factor and 49 I/Os in Arduino form factor. (I agree with Dave, the OHO products are very handy, although a bit outdated they are at least 5V compatible. I think there are yet some clever projects to be made using the GOP module too - it has fewer I/Os but has on-board SRAM.) |
|
| Author: | cbmeeks [ Wed Aug 03, 2016 8:43 pm ] |
| Post subject: | Re: Breadboard FPGA for $69 |
I should have been more specific. For me personally, the DIL packages are very interesting. Honestly, I didn't think there were many of them around. Which is why I was surprised when I saw it. I will certainly check out that OHO too. My interests would be for memory decoding, video generation, etc. |
|
| Author: | BigEd [ Wed Aug 03, 2016 8:49 pm ] |
| Post subject: | Re: Breadboard FPGA for $69 |
I think you did find a new one! It's possible you'll also see something interesting at https://www.enterpoint.co.uk/products/ |
|
| Author: | commodorejohn [ Wed Aug 03, 2016 8:55 pm ] |
| Post subject: | Re: Breadboard FPGA for $69 |
cbmeeks wrote: I should have been more specific. For me personally, the DIL packages are very interesting. Honestly, I didn't think there were many of them around. Which is why I was surprised when I saw it. Ah, gotcha. |
|
| Author: | hoglet [ Wed Aug 03, 2016 9:08 pm ] |
| Post subject: | Re: Breadboard FPGA for $69 |
A few more with a DIP form factor: The Micro-Nova Mercury - Spartan XC3S200A + 512Kx8 10ns SRAM - DIP-64 package - $79 - http://www.micro-nova.com/mercury The XESS XuLA2-LX9 - Spartan XC6SLX9 + 16Mx16 SDRAM - 2"x1" DIP (ish) package - $69 - http://www.xess.com/shop/product/xula2-lx9/ The XESS XuLA2-LX25 - Spartan XC6SLX25 + 16Mx16 SDRAM - 2"x1" DIP (ish) package - $119 - http://www.xess.com/shop/product/xula2-lx25/ As far as I know, the GODILs are unique in their ability to arbitrarily configure (with jumpers) the VCC and GND pins. This allows them to act as plug-in replacement for pretty much any DIP-40 packaged device. Dave |
|
| Author: | BigEd [ Wed Aug 03, 2016 9:12 pm ] |
| Post subject: | Re: Breadboard FPGA for $69 |
Thanks for those links! There's a previous thread for the general case but it's good to have a thread for the DIP case. viewtopic.php?f=10&t=1787 |
|
| Author: | Bregalad [ Thu Aug 04, 2016 8:34 am ] |
| Post subject: | Re: Breadboard FPGA for $69 |
To my personal experience, FPGA development has always been a nightmare, due to the lack of well-designed tools, and this is much more a deal killer than the price. If it would be, say, $690 instead of $69, but came with tools that were easy to use, and do not reqiure particular PC hardware not using any kind of licence, then I'd be much more interested. |
|
| Author: | BigEd [ Thu Aug 04, 2016 8:51 am ] |
| Post subject: | Re: Breadboard FPGA for $69 |
This might be a good point to mention Lattice FPGAs and the open source tools people have built for them. http://www.clifford.at/icestorm/ |
|
| Author: | cbmeeks [ Thu Aug 04, 2016 1:03 pm ] |
| Post subject: | Re: Breadboard FPGA for $69 |
I have to admit, those GODIL's look pretty nice. http://www.trenz-electronic.de/products ... ronik.html I like the idea of drop-in replacements and 5v tolerant pins. Seems like there would be more of a demand for these...especially in the retro communities. |
|
| Author: | BigEd [ Thu Aug 04, 2016 3:54 pm ] |
| Post subject: | Re: Breadboard FPGA for $69 |
You do see a trickle of GODIL projects in the 8 bit world. Not a flood, but there is certainly a good fit. |
|
| Author: | Rob Finch [ Tue Aug 09, 2016 6:15 am ] |
| Post subject: | Re: Breadboard FPGA for $69 |
GODIL's look nice but I need something with about 80k or more RAM onboard, and about 50 IO's. (35-40 5V) Some of the boards with newer parts have enough RAM, but no 5V tolerance. Can't seem to find a win. |
|
| Page 1 of 2 | All times are UTC |
| Powered by phpBB® Forum Software © phpBB Group http://www.phpbb.com/ |
|