combinatorial loops / feedback paths discussion 4 40 (9/21/2004 7:32:27 PM)
I am working on synthesizing some legacy code, and Synplify (correctly) finds a combinatorial loop in the logic. My gut reaction was to modify the function to use a latch instead of a feedback path because I'v...
victor.hannak (15)

Virtex 4 integrated A/Ds? 7 83 (9/20/2004 9:44:29 PM)
Does anyone know if it is possible to use the "system monitor" analog inputs as regular A/Ds and use the digital data output from these convertors as inputs to internal logic in the FPGA? ...
Michael

How feasible is a SoC project? 2 82 (9/20/2004 5:44:39 PM)
I'm just an undergrad student, but I am interested in getting started in some FPGA projects. I would really like to some day build up a usable SoC system to play with. OpenCores.org has been fun site to read th...
woodenbicycle

Stratix II vs. Virtex 4 - availability & fab partnership 4 70 (9/21/2004 4:28:04 AM)
Responding to comments on device availability and fab partnership . . Stratix II Availability: Altera has a track record of shipping devices on schedule. We realize the importance of delivering products on sc...
davidg7883

ISE 6.3 Suse 9.1 installation problem 3 76 (9/22/2004 10:21:29 AM)
I have a desktop with Suse 9.1 and I managed to install ISE 6.2 . I also have a laptop with Suse 9.1 as well, but I could not install neither ISE 6.2 nor ISE 6.3 . The error is the same : Wind/U Error(294): ...
Arthur

Spartan-3 DDR Speed 1 126 (9/21/2004 9:23:39 PM)
Hi, the data sheet tells 330MHz for CLKOUT_FREQ_2X_LF what yields into 660MBit/s while 620MBit/s are mentioned. ISE 6.2 compiles a small test with 200MHz clock (1x) constrains yielding into 800MBit/s. Will ...
Thomas

USER RESET in XILINX FPGA 12 152 (9/16/2004 1:04:04 PM)
Dear all: My user reset is connect to all DFF. due to Fan Out limit, XST duplicated several reset signal and cause some output DFFs can not place into IOB. how to do, set a higher fan out value, or drive us...
seyior

Tcl script window does not appear 2 83 (9/21/2004 2:01:19 PM)
Hi, when I choose in Quartuss Utility Windows > Tcl Console and then choose Tcl Script (Tools menu) I cannot see any Tcl tool. Is the Tcl tool only available for certain Quartus versions? I am using Quartus ...
ALuPin

Re: XST vhdl adder with carry out : broken carry chain 1 110 (9/21/2004 10:13:07 PM)
On July 30 I posted: > Hello Bart, > > We've run your code and there is indeed a map packing problem. The MSB > is simply a FF driven by COUT of the previous slice. I see two related > problems with the p...
Bret

Quartus In-system Memory bug 3 88 (9/16/2004 8:10:45 AM)
I try to use Quartus In-system Memory Editor but it doesn't work. I have implement a RAM and I can read data from it. But the problem is that I can't modify data like I want. If I change a word, my data is co...
io