6502.org :: View topic - Survey of FPGA dev boards

...Probably 3V3 only - I can see no mention of it being 5V tolerant.

..
Nothing else on there apart from regs, 50MHz oscillator and the configuration chip (underneath), which personally is how I prefer it so that there is no dedicated hardware already allocated to pins.

Works really well for me, and enough on-chip to allow me to run several 6502 cores, or a full CP/M implementation with an external SRAM, serial interfaces and SD card etc...
Been so useful to me that I have bought several, and all are in use.

..l

They look good - do you have links to buy them, or part numbers to search for?
Thanks
Ed

... (don't work on Internet Explorer. too secur setings)

zz_indigo wrote:

... (don't work on Internet Explorer. too secur setings)

Chrome (with default settings) doesn't trust your last link either.

Mike

Author:	rwiker [ Tue Jul 08, 2014 7:18 pm ]
Post subject:	Re: Survey of FPGA dev boards
I think the boards I found at tindie have actually been mentioned previously in this thread, but I don't think I've seen this one mentioned before: http://numato.com/saturn-spartan-6-fpga ... -ddr-sdram Spartan 6 LX45 at $140.

Author:	BigEd [ Sun Aug 24, 2014 3:05 pm ]
Post subject:	Re: Survey of FPGA dev boards
The BeMicro CV is a dev board for $49, with a Cyclone V FPGA (176kByte RAM) and 128MByte 16-bit wide SDRAM. It has 80 GPIOs and USB. http://parts.arrow.com/item/detail/arro ... /bemicrocv Probably 3V3 only - I can see no mention of it being 5V tolerant. (via hackaday)

Author:	BigDumbDinosaur [ Sun Aug 24, 2014 6:01 pm ]
Post subject:	Re: Survey of FPGA dev boards
BigEd wrote: ...Probably 3V3 only - I can see no mention of it being 5V tolerant. I tracked down the data sheet for the Altera FPGA that is the heart of this board. You correctly surmised that it is a 3.3 volt device (GPIO pins). The core voltage is even lower at 1.43 volts maximum. Guess it isn't going to work with POC V2.

Author:	BigEd [ Sun Aug 24, 2014 6:20 pm ]
Post subject:	Re: Survey of FPGA dev boards
I am curiously attracted to boards with 16-bit wide RAM...

Author:	zz_indigo [ Wed Aug 27, 2014 5:24 pm ]
Post subject:	Re: Survey of FPGA dev boards
zx80nut wrote: .. Nothing else on there apart from regs, 50MHz oscillator and the configuration chip (underneath), which personally is how I prefer it so that there is no dedicated hardware already allocated to pins. Works really well for me, and enough on-chip to allow me to run several 6502 cores, or a full CP/M implementation with an external SRAM, serial interfaces and SD card etc... Been so useful to me that I have bought several, and all are in use. ..l I find alternative with Cyclone IV + More Keys 2 vs 1 + More Leds 8 vs 2 + More internal memory 270Kbit vs 117Kbit + Supported on newer quartus-II - no power on headers (+5V power pins mostly on top side, no 3.3V power on headers) = Power via USB or +5V power pins vs JACK = Internal oscilator 25MHz vs 50 Mhz on botom side config reload button.

6502.org http://forum.6502.org/

Survey of FPGA dev boards http://forum.6502.org/viewtopic.php?f=10&t=1787	Page 4 of 8

Author:	zz_indigo [ Wed Aug 27, 2014 5:36 pm ]
Post subject:	Re: Survey of FPGA dev boards
For simple computers i use this EP4CE6 kit. - 16bit VGA (RGB 565) - PS/2 - 4M x 16Bit x 4 Banks SDRAM - 32M-bit Serial Flash - 8bit A/D converter - IR recivier - 4 butons - 4 LEDs - 4 7-segment display (pins shared with LEDs_ - buzzer - USB to serial converter (power via USB oe header) pins used for VGA and PS2 on header

Author:	BigEd [ Wed Aug 27, 2014 5:49 pm ]
Post subject:	Re: Survey of FPGA dev boards
They look good - do you have links to buy them, or part numbers to search for? Thanks Ed

Author:	zz_indigo [ Wed Aug 27, 2014 7:58 pm ]
Post subject:	Re: Survey of FPGA dev boards
BigEd wrote: They look good - do you have links to buy them, or part numbers to search for? Thanks Ed http://www.ebay.com/itm/Altera-Cyclone- ... 3f32c53d7c Price is ~50$ http://www.amazon.com/Altera-CycloneIV- ... B00KLQCUY2 My local copy of documentation: https://svn.mavipet.sk/svn/fpga_tests/HW/ZRtech/ (don't work on Internet Explorer. too secur setings)

Author:	BigEd [ Wed Aug 27, 2014 8:48 pm ]
Post subject:	Re: Survey of FPGA dev boards
Thanks!

Author:	barrym95838 [ Wed Aug 27, 2014 10:17 pm ]
Post subject:	Re: Survey of FPGA dev boards
zz_indigo wrote: ... (don't work on Internet Explorer. too secur setings) Chrome (with default settings) doesn't trust your last link either. Mike

Author:	Tor [ Thu Aug 28, 2014 12:10 am ]
Post subject:	Re: Survey of FPGA dev boards
That's actually a fault of Chrome, there's nothing inherently wrong with a self-signed certificate. The whole mess is because https mixes authentication with encryption when those are really separate issues. As long as you're not uploading private data (as with banking and payment institutions) it's pointless to have an 'authorative' certificate. But there you go. As we know a certain institution also has been shown to have direct access to the 'authority' on certificates and can inject man-in-the-middle attacks on the data stream. Not so with self-signed ones.

Author:	zz_indigo [ Thu Aug 28, 2014 10:28 am ]
Post subject:	Re: Survey of FPGA dev boards
barrym95838 wrote: zz_indigo wrote: ... (don't work on Internet Explorer. too secur setings) Chrome (with default settings) doesn't trust your last link either. Mike self signed certificate. A planing fixed it.

Author:	BigEd [ Wed Sep 10, 2014 8:13 pm ]
Post subject:	Re: Survey of FPGA dev boards
Hackaday now sell things, and in particular they sell an FPGA board for $49. It has a Spartan 6 LX9 and a 128k x16bit wide 10ns SRAM. http://store.hackaday.com/products/ardu ... pga-shield It's an open design - see the project page at http://hackaday.io/project/38-Arduino-C ... PGA-Shield

Author:	BigEd [ Sat Mar 14, 2015 9:41 am ]
Post subject:	Re: Survey of FPGA dev boards
A spartan6 dev board is available from scarab hardware although presently out of stock. minispartan6+ $75 or $105 Sister board: minispartan3 $25 or $35 It has a 16-bit wide SDRAM on board. See http://forums.xilinx.com/t5/Xcell-Daily ... a-p/559300

Author:	BigEd [ Mon Apr 20, 2015 9:59 am ]
Post subject:	Re: Survey of FPGA dev boards
The Papilio boards range from $40 to $90, and there's a Computing Shield for $45 which offers lots of appropriate I/O connectors: VGA, PS/2, SDcard, stereo jack, joystick, serial. http://store.gadgetfactory.net/fpga/ http://store.gadgetfactory.net/computing-shield/ http://store.gadgetfactory.net/compare/132/76/83 Dave Banks has just implemented a 2015 model Acorn Atom on Duo+Computing: http://stardot.org.uk/forums/viewtopic. ... 11#p110255 The Duo is like an Arduino with FPGA and a big SRAM: - Spartan 6 LX9 FPGA - Dual Channel USB 2.0 Interface - 512KB or 2MB ISSI IS61WV5128 SRAM (8-bit wide) - 64Mbit SPI Flash - Atmel AVR ATmega32U4 - Arduino-Compatible Chip - 54 I/O pins arranged in an Arduino-Compatible Mega Form Factor - Digital Pins 0-16 Connected to FPGA and ATmega32U4 Interestingly, the page says that SDRAM is a lot more tricky, hence the choice of SRAM.

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