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Cheaptest FPGA board for Computer Architecture

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Othman Ahmad
Guest

Thu Aug 16, 2018 1:45 am   



http://mymicroprocessor.blogspot.com/2018/08/cheapest-fpga-board-rm250-similar-to.html

The A-CE4E6

Intel Cyclone IV FPGA ic.

Jan Coombs
Guest

Thu Aug 16, 2018 2:45 am   



On Wed, 15 Aug 2018 16:54:16 -0700 (PDT)
Othman Ahmad <othmana_at_gmail.com> wrote:

Quote:
http://mymicroprocessor.blogspot.com/2018/08/cheapest-fpga-board-rm250-similar-to.html

The A-CE4E6

Intel Cyclone IV FPGA ic.


I like this one better, almost everything for a very low power
processor on one chip [1], and open-source development tool chain
available [2].

It also has 15% more LUTs, ten times more RAM, and an SPI
flash for code storage. But only 60% of multipliers, and 16b
wide memories.

The iCE40 UP5K also has on chip 10kHz and 48MHz oscillators, and
hardware support for 2 x SPI and 2 x I2C interfaces.

Jan Coombs
--

[1] Gnarly Grey UPDuino v1.0 Board $9.99 delivered
5.3K LUTs, 1Mb SPRAM, 120Kb DPRAM, 8 Multipliers, 34 GPIO on
0.1” headers, SPI Flash, RGB LED, 3.3V and 1.2V Regulators
Gnarly Grey UPDuino v1.0 Board
http://gnarlygrey.atspace.cc/development-platform.html#upduino_v1

or with std FTDI programmer interface $15.99 delivered
http://gnarlygrey.atspace.cc/development-platform.html#upduino_v2

[2] Project Icestorm - see iCE40-UP5K-SG48
http://www.clifford.at/icestorm/

Othman Ahmad
Guest

Thu Aug 16, 2018 3:45 am   



On Thursday, 16 August 2018 08:55:06 UTC+8, Jan Coombs wrote:
Quote:
On Wed, 15 Aug 2018 16:54:16 -0700 (PDT)
Othman Ahmad <othmana_at_gmail.com> wrote:

http://mymicroprocessor.blogspot.com/2018/08/cheapest-fpga-board-rm250-similar-to.html

The A-CE4E6

Intel Cyclone IV FPGA ic.

I like this one better, almost everything for a very low power
processor on one chip [1], and open-source development tool chain
available [2].

It also has 15% more LUTs, ten times more RAM, and an SPI
flash for code storage. But only 60% of multipliers, and 16b
wide memories.

The iCE40 UP5K also has on chip 10kHz and 48MHz oscillators, and
hardware support for 2 x SPI and 2 x I2C interfaces.

Jan Coombs
--

[1] Gnarly Grey UPDuino v1.0 Board $9.99 delivered
5.3K LUTs, 1Mb SPRAM, 120Kb DPRAM, 8 Multipliers, 34 GPIO on
0.1” headers, SPI Flash, RGB LED, 3.3V and 1.2V Regulators
Gnarly Grey UPDuino v1.0 Board
http://gnarlygrey.atspace.cc/development-platform.html#upduino_v1

or with std FTDI programmer interface $15.99 delivered
http://gnarlygrey.atspace.cc/development-platform.html#upduino_v2

[2] Project Icestorm - see iCE40-UP5K-SG48
http://www.clifford.at/icestorm/


Thank you for introducing me to Lattice FPGA. I had been looking for sources of Lattice Logic FPGA but cannot find any supplier.

The development tools of this FPGA is still primitive compared to Intel Quartus.

I started with Xilink in the 1990s. 30 years ago. When I returned to the academic 10 years ago, I found that Xilink does not provide its tools for free so I chose Altera.

We started with simulation tools but later on managed to get funds to buy full development boards for teaching. And now, are committed to developing FPGA using Altera/Intel ics. I do not know the status of Xilink but would like to reconsider if very attractive.

Despite a few offerings, like the Spartan development boards at competitive prices, Intel FPGA are still more widespread and tend to be slightly cheaper than Xilink boards. Lattice boards are even more expensive.

Your source seem cheap but transportation cost will kill us. Its tools are still primitive but if Lattice were to provide manual routing tools, or anybody else in the ICE project were to provide manual routing tools, I may reconsider. Intel boards only allow auto-routing. Xinlink used to provide manual routing tools but no more.

With manual routing tools, I can see exactly what devices are to be connected and how they are connected. It will allow me to optimise my design better. I used to do it for a Xinlink fpga for an instruction decoder demonstration.

It was also satisfying to be able to see our components clearly. The pin planners are too jumbled up and do not provide much information about devices that are connected.

Jan Coombs
Guest

Thu Aug 16, 2018 9:45 am   



On Wed, 15 Aug 2018 19:00:03 -0700 (PDT)
Othman Ahmad <othmana_at_gmail.com> wrote:

Quote:
On Thursday, 16 August 2018 08:55:06 UTC+8, Jan Coombs wrote:
[1] Gnarly Grey UPDuino v1.0 Board $9.99 delivered
5.3K LUTs, 1Mb SPRAM, 120Kb DPRAM, 8 Multipliers, 34 GPIO on
0.1” headers, SPI Flash, RGB LED, 3.3V and 1.2V Regulators
Gnarly Grey UPDuino v1.0 Board
http://gnarlygrey.atspace.cc/development-platform.html#upduino_v1

or with std FTDI programmer interface $15.99 delivered
http://gnarlygrey.atspace.cc/development-platform.html#upduino_v2

[2] Project Icestorm - see iCE40-UP5K-SG48
http://www.clifford.at/icestorm/

Thank you for introducing me to Lattice FPGA. I had been
looking for sources of Lattice Logic FPGA but cannot find any
supplier.


[snip]

> Your source seem cheap but transportation cost will kill us.

The boards I have bought are shipped 5000km for free, and one
at a time do not attract customs charges.

Quote:
Its tools are still primitive but if Lattice were to provide
manual routing tools, or anybody else in the ICE project were
to provide manual routing tools, I may reconsider.


The Icestorm tool chain is open source, so could be adapted for
layout control, elimination of synthesis tool, and similar
custom work.

Quote:
With manual routing tools, I can see exactly what devices are
to be connected and how they are connected. It will allow me
to optimise my design better. I used to do it for a Xinlink
fpga for an instruction decoder demonstration.

It was also satisfying to be able to see our components
clearly. The pin planners are too jumbled up and do not
provide much information about devices that are connected.


These chips are so small that maybe you could do this without a
GUI, or add a chip layout planner to the tool chain yourself?

Jan Coombs

Tomas D.
Guest

Mon Aug 27, 2018 3:45 am   



Quote:
I started with Xilink in the 1990s. 30 years ago. When I returned to the
academic 10 years ago, I found that Xilink does not provide its tools for
free so I chose Altera.


You've started 30 years ago... and stayed there.

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