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PostPosted: Mon Feb 27, 2017 10:22 am 
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kakemoms wrote:
...Lattice ... MachXO3L ... starter kit (with USB interface for programming) for around 25USD.

The CPLD on the board has about 6900 LUTs and 26KByte ...



Sounds good! Here are a couple of links for LCMXO3L-6900C-S-EVN:
Digikey
Mouser


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PostPosted: Mon Mar 06, 2017 11:49 am 
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BigEd wrote:
kakemoms wrote:
...Lattice ... MachXO3L ... starter kit (with USB interface for programming) for around 25USD.

The CPLD on the board has about 6900 LUTs and 26KByte ...



Sounds good! Here are a couple of links for LCMXO3L-6900C-S-EVN:
Digikey
Mouser


I also forgot to mention that it supports gearing for DDR memory with bus speed up to 400MHz (800Mbps).. if you would ever need that(!).


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PostPosted: Mon Mar 06, 2017 2:14 pm 
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As spotted on Stardot: Z-turn Board featuring Xilinx Zynq-7010/20, is a single-board computer capable of running Linux. It has 667MHz Xilinx XC7Z010/020 Dual-core ARM Cortex-A9 Processor with Xilinx 7-series FPGA logic, either 28k or 85k logic cells depending on model.

The board has lots of I/O including HDMI. It's $99 or $119 depending on model.

http://www.myirtech.com/list.asp?id=502

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The Z-turn Board takes full features of the Zynq-7010 / 7020 SoC, it has 1GB DDR3 SDRAM and 16MB QSPI Flash on board and a set of rich peripherals including USB-to-UART, Mini USB OTG, 10/100/1000Mbps Ethernet, CAN, HDMI, TF, JTAG, Buzzer, G-sensor and Temperature sensor. On the rear of the board, there are two 1.27mm pitch 80-pin SMT female connectors to allow the availability of 96 / 106 user I/O and configurable as up to 39 LVDS pairs I/O.


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PostPosted: Thu Apr 06, 2017 7:00 pm 
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Here's an affordable FPGA kit with sixteen 5V tolerant I/Os, an Arduino-compatible connecter layout, SDcard, VGA, and HDMI connectors, and an 8000-gate Altera MAX FPGA. The kit also includes a programming cable and an I/O board with 4 digit display. The only RAM is the 42kByte in the FPGA.

http://andybrown.me.uk/2016/04/24/maximator-review/

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Headline price is €50 but inclusive price turns out more like €75 shipped to UK.

Hat-tip to Dave/hoglet for mentioning this - it's in Joel's big table of cheap FPGA dev boards.


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PostPosted: Sat May 27, 2017 2:43 pm 
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Terasic's £80 DE0-Nano-SOC is an interesting board - could be obsolete but is still available - it uses a chip with both an Altera FPGA and a dual-core ARM. There's 1G of DDR3 RAM. The FPGA has a massive 300kByte of on-chip RAM and is connected to the ARM by some kind of bridge to the standard AMBA bus. The ARM has USB and Ethernet.

Attachment:
DE0-Nano-SOC.png
DE0-Nano-SOC.png [ 340.33 KiB | Viewed 8809 times ]


At least 72 I/Os and several on board devices, although no VGA or HDMI. Also an Arduino-compatible set of connectors. All 3V3 unfortunately.

User manual: https://media.digikey.com/pdf/Data%20Sh ... SoC_UM.pdf


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PostPosted: Sun May 28, 2017 5:28 am 
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As also noted by Windfall, also £80 and also from Terasic, the DE10-Lite.
Again the FPGA (MAX 10 10M50DAF484C7G) has lots of onboard RAM, but this time we also get off-chip SDRAM, 32M x 16bits. Not sure what speed. This time it's a new product, not an obsolete one.
http://www.mouser.co.uk/new/terasic-tec ... ite-board/


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PostPosted: Sun May 28, 2017 12:54 pm 
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BigEd wrote:
This time it's a new product, not an obsolete one.

I'm curious about what your definition of obsolete is. The DE0 Nano SOC is only two years old, as far as I know (it's a Cyclone V board, not Cyclone IV like the similarly named and much older DE0 Nano). By that standard, nearly every development board on the market is 'obsolete'.


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PostPosted: Sun May 28, 2017 1:31 pm 
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I was only going by what the website says:
Obsolete item.

It may be that this proved not to be a successful dev board and they no longer make them, although Digikey still have 273 left in stock.

Edit: looks like the replacement is DE10-Nano, with Intel inside, instead of ARM.
Edit edit: still ARM inside - see correction below.


Last edited by BigEd on Sun May 28, 2017 2:55 pm, edited 1 time in total.

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PostPosted: Sun May 28, 2017 2:27 pm 
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BigEd wrote:
I was only going by what the website says:
Obsolete item.

It may be that this proved not to be a successful dev board and they no longer make them, although Digikey still have 273 left in stock.

Edit: looks like the replacement is DE10-Nano, with Intel inside, instead of ARM.

Indeed. Well, I stand corrected then. I never saw them retire a board that quickly, though. They're still selling the DE1, and that is 11 years old ... :shock:

The DE10 Nano still has a 'hard' ARM though. Not sure where you get the Intel. Except that Intel owns Altera these days.


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PostPosted: Sun May 28, 2017 2:55 pm 
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Oh, that's good, I thought it had turned into an x86 IoT platform. If it's still an ARM, it's still attractive to me.

Looks like the price may have bumped up a bit, £99 maybe, but there's an added HDMI connector.


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PostPosted: Mon May 29, 2017 4:27 am 
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BigEd wrote:
As also noted by Windfall, also £80 and also from Terasic, the DE10-Lite.
Again the FPGA (MAX 10 10M50DAF484C7G) has lots of onboard RAM, but this time we also get off-chip SDRAM, 32M x 16bits. Not sure what speed. This time it's a new product, not an obsolete one.
http://www.mouser.co.uk/new/terasic-tec ... ite-board/



Arrow has a great competitor to the DE10-Lite at a very nice price point.
The DECA uses a MAX 10 10M50DAF484C6G, the 6 being a faster speed grade.
It also sports HDMI and 512MB DDR3 SDRAM.
https://www.arrow.com/en/products/deca/ ... ment-tools


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PostPosted: Mon May 29, 2017 6:48 am 
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Looks good, thanks!


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PostPosted: Tue Nov 28, 2017 1:06 am 
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Another vote for the Zturn, and a mention that there's now a 'lite' version as well which has a Zynq7007S (single-core ARM) but still manages 23k logic cells for the princely price of $69 (£51) or $75 (£56) for the 7010 version. You don't get the HDMI on the 'lite boards, but the add-on "cape" which supplies the connector is only $29 (£21).

At first I was ignoring the Zturn boards because they came shipped with an HDMI chip that it's impossible to get a data sheet for, and there was no other access to the HDMI port. To add insult to injury, the HDMI core they provided was proprietary and shut itself down after 30 minutes of operation...

Now, however, they provide a standard Xilinx VDMA design (presumably, I'm still waiting on the '020 version of the board to arrive) which sets up the SIL9002A chip and then treats it like an LCD video-out (pixel-clock, pixel-data, hsync, vsync,data-valid). This has no time-out.

For the money, the Zynq boards are pretty much on a par with the S7 boards (Arty etc.) and they throw in a dual-core high-speed ARM chip, and a hard-macro DDR3/4 driver (so you don't waste 30% of your brand-spanking-new Artix35T on the DDR driver). In fact if you say you want the basics of something you can make a single-board computer out of (USB, HDMI, ethernet, SPI etc.) the '020 Zturn board seems to win hands down to me - that's a huge step-up in logic-cells/luts ...

Code:
Chip          Cells   BRAM    DSP   Board Cost   From

Zynq-07       23k       50     66    $69+$29      myirtech.com
Zynq-10       28k       60     80    $75+$29      myirtech.com
Zynq-20       85k      140    220    $99          myirtech.com

Artix-35      33.3k     50     90    $99          digilentinc.com
(-DDR)        22k       50     90    $99

Spartan7-50   52.2k     75    120    $109         digilentinc.com
(-DDR)        42k       75    120    $109

No, I don't work for the company, but I've spent the last few days looking for which board to get as an Xmas present for my next project. The price/performance of the Zturn board is *really* hard to beat. I'm including digilent's boards because they're the cheapest I know of for the Artix/Spartan7 series. If there's cheaper I'm interested to find out.

On the plus side for the Zynq, you get access to the dual ARM cores, and all the peripherals that come with it (USB, ethernet, SPI, I2C, CAN, SD card, etc.) and Vivado isn't that bad an environment to develop in, even if it has its quirks...

Minor niggles on the Zturn:
  • It would have been nice to have the USB/SD-card on the right or left sides, so the board could be mounted in a case at the rear and provide access to all the ports. As it stands it looks like my case-depth is pre-determined and the USB will be at the front instead.
  • There's no audio on-board to speak of (buzzers don't count)
  • None of the outputs are 5v-tolerant. One solution to that might be to put an STM32 connected by SPI (or let the FPGA be memory-mapped if you're feeling adventurous). Then you have N (depending on the part you choose) 5v-tolerant IO's.

At the end of the day though, if you're dropping $100 on a board, you'd be nuts to overlook the zynq - for the price you get a hell of a lot.


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PostPosted: Tue Nov 28, 2017 3:27 am 
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I was just reminded of this thread by an email update because I'm subscribed, so let me post a quick update that the Terasic DE0-Nano (which was unavailable for some time) is now back in stock and they made it a bit cheaper too: it was $99 before, now $79 (and if you're a student, you can get them even cheaper).

http://www.terasic.com.tw/cgi-bin/page/ ... 3&PartNo=7

===Jac


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PostPosted: Tue Nov 28, 2017 8:19 am 
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(Thanks for the detailed review, SpacedCowboy, and welcome to the forum!)


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