MISC - Stack Based vs. Register Based6112 (3/29/2013 9:00:50 PM) comp.arch.fpga I have been working with stack based MISC designs in FPGAs for some
years. All along I have been comparing my work to the work of others.
These others were the conventional RISC type processors supplied by... rickman
Sine Lookup Table with Linear Interpolation12018 (3/16/2013 10:30:51 PM) comp.dsp I've been studying an approach to implementing a lookup table (LUT) to
implement a sine function. The two msbs of the phase define the
quadrant. I have decided that an 8 bit address for a single quadrant ... rickman
Sometimes I Just Don't Get the Tools824 (1/28/2013 3:46:05 AM) comp.arch.fpga I've learned to use Active HDL some time ago and never had too much
trouble with it. But now it is not letting me use the waveform viewer in
an effective way. I typically add all my signals once and then a... rickman
DFT vs Bandpass Filter3323 (1/15/2013 12:11:48 AM) comp.dsp If you were designing a FIR filter to pass as narrow a band as possible
how would that be done? A DFT seems to be essentially a bank of band
pass filters (with decimation) and use various sine wave as the ... rickman
Lattice iCECube2 for iCE40 Devices422 (1/9/2013 2:43:54 AM) comp.arch.fpga How many have used the iCECube2 tool? I am just getting started with it
and it seems to be less than optimal. It uses Synplify Pro for
synthesis. I wrote code for a simple enabled up/down counter which I... rickman
Synchronization With Carrier in the Noise12825 (11/21/2012 8:23:55 PM) comp.dsp Some technologies detect a carrier that is below the level of the noise.
I would think that to pull them out you would have to do some sort of
synchronous detection. But how do you get in sync if you can... rickman
Lowest Power Design in an FPGA239 (11/4/2012 3:40:12 AM) comp.arch.fpga What is the lowest power design you have done in an FPGA or CPLD? There
have been some very low power devices on the market for a number of
years now. I assume there have been some designs that push the p... rickman
Architecture of Minimal Delta Sigma Converters2335 (10/31/2012 4:45:07 AM) comp.dsp I am looking to use a delta sigma (DS) converter with a minimal
footprint in an FPGA, both in terms of LUT usage and power consumption.
Lattice Semiconductor has an app note on a design, but it is not muc... rickman
Using LVDS Input for Delta Sigma ADC648 (10/28/2012 7:51:49 PM) comp.arch.fpga I found an app note on the Lattice site about using the LVDS input as
the input comparator. My design is very low power and I am concerned
about the power consumption of this input. Typically inputs are n... rickman
Quick Connect Contacts1942 (9/14/2012 6:28:07 PM) comp.arch.embedded I am looking for some type of contact to use on a front panel that would
allow the momentary connection of a pair of discrete wires. I looked at
the junction blocks used for speaker wire on stereos, but th... rickman
Generate Pink Noise Efficiently4110 (3/20/2013 2:10:01 AM) comp.dsp I am looking for a compute-efficient algorithm to generate pink noise.
The application must run on a smartphone (iPhone or Android w/NDK) and
take up a small fraction of the available compute time. The
appl... no-one5677(19)
Xilinx tools for XC3020???618 (3/26/2013 12:04:38 AM) comp.arch.fpga I've got a 20-year-old Xilinx XC3020 development board. I think it would be fun to fire it up and bring it to the 20th anniversary FCCM in Seattle next month. (http://fccm.org/2013/)
I don't see XC3000-serie... mbuttspdx(4)
What a Xilinx fpga could do in 19881014 (3/26/2013 8:17:42 PM) comp.arch.fpga I'm writing up a project that ran from 1988 to 1991. It involved
building an ECL-based digital processor that ran at 25MHz, working
into a couple of ECL SRAMs. Debugging the hardware was tedious and
took mor... bill.sloman1(63)
MISC - Stack Based vs. Register Based6112 (3/29/2013 9:00:50 PM) comp.arch.fpga I have been working with stack based MISC designs in FPGAs for some
years. All along I have been comparing my work to the work of others.
These others were the conventional RISC type processors supplied by... gnuarm(2644)
OT: Recommend a decent news reader?258 (4/7/2013 12:01:21 AM) comp.arch.embedded Outlook Express used to be ok if you had the OE patch fix for
top-posting, bottom-feeding or whatever they called it, but it seems to
have gone the way of much half-decent software. I could editorialize on... nrm1(6)
Low cost mains power supply116 (4/8/2013 10:44:24 AM) comp.arch.embedded In most DIY stores you can find these cheap Chinese digital timers to
turn you lamps or appliances on at specified time. The thing I'm
wondering is, how do they power the digital circuitry from
110VAC in a ... nobody15(1231)
Modelsim ought to be cheaper98 (4/23/2013 8:13:42 PM) comp.arch.fpga Why is Modelsim so expensive? It is a mature product and yet it segfaults =
on me all the time. Constantly. Often, when it ought to give me warnings =
or errors (such as when there is a port width mismatch... kevin.neilson(16)
free software 1-wire (DS18x20) library (AVR, ARM)?83 (5/2/2013 6:23:48 PM) comp.arch.embedded BTW, is there any good 1-wire "master" interface library (as
used, e. g., to communicate with the DS18B20 temperature
sensors), which happens to be free software?
I'm aware of the Peter Dannegger & Mar... oneingray(254)
Power Gating Devices73 (5/3/2013 7:29:16 PM) comp.arch.embedded I've been toying around with the idea of using transistors to power gate devices, an SD card for example. Is there any proper practices when doing this and/or anything to be concerned about?
... lutherblackwood(6)