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Discussion Groups | FPGA-CPU | Processor selection
This list is for discussion of the design and implementation of field-programmable gate array based processors and integrated systems. It is also for discussion and community support of the XSOC Project (see http://www.fpgacpu.org/xsoc).
Processor selection - Avinash Shetty - Jul 18 13:55:00 2003
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Hi Can any one let me know if there is any free open core for a 16 bit processor . I have studied the Picoblaze ....but its just 8 bits and the Microblaze is 32 bits ....both dont fit into what i am looking for ...something exactly like that which is 16bits ....cause all my interfacing devices requires 16 bits .. Can anyone suggest me a processor which i can use in my experiment which has a 16 bit data bus , 16 bit address bus and I/O device capabilities .....standard ISA would suffice ..no other instructions needed ..and a VHDL or Verilog code that decribes it .. Thanks in Advance Regards Avinash Shetty Graduate Student Electrical Engineering (VLSI Design) University Of Southern California --------------------------------- |
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Re: Processor selection - Kolja Sulimma - Jul 19 3:24:00 2003
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Hi! There is of course Jan Grays xr16 at http://www.fpgacpu.org It has a C-compiler port an assembler and sourcecode but uses restrictive license. I have a 16-bit RISC processor with Wishbone interface, a very nice assembler and good documentation that is licensed under the Open Cores License: http://www.fpga.de/tiki/tiki-index.php?page=IpK16 I have a SoC for that processor that includes VGA output, RS232, keyboard and sound, but I have not put that online yet. Be patient. Kolja Sulimma On Fri, 2003-07-18 at 20:55, Avinash Shetty wrote: > Hi > Can any one let me know if there is any free open core for a 16 bit processor . > > I have studied the Picoblaze ....but its just 8 bits and the Microblaze is 32 bits ....both dont fit into what i am looking for ...something exactly like that which is 16bits ....cause all my interfacing devices requires 16 bits .. > > Can anyone suggest me a processor which i can use in my experiment which has a 16 bit data bus , 16 bit address bus and I/O device capabilities .....standard ISA would suffice ..no other instructions needed ..and a VHDL or Verilog code that decribes it .. > > Thanks in Advance > > Regards > > Avinash Shetty > Graduate Student > Electrical Engineering (VLSI Design) > University Of Southern California > > > --------------------------------- > > > To post a message, send it to: > To unsubscribe, send a blank message to: |
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doubt regarding xilinx XST synthesis tool - krish venkita - Sep 19 11:49:00 2003
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HI group, I am new to xilinx, so it will be useful if anybody can give me a clear picture regarding this Can Xilinx XST be used to target XC4000 chips by starting from verilog or VHDL or schematic design flow rather than from .edif file. Is there any other way to program XC4000 chips using XST or do we need to go for FPGA express or leonardo spetrum or any other tools if we need to start from verilog or VHDL. Thanks in advance for ur answers krish. __________________________________ |
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Re: doubt regarding xilinx XST synthesis tool - Neeraj Varma - Oct 11 15:41:00 2003
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XST synthesis does not support XC4000, Spartan and SpartanXL families. You need to use a 3rd party synthesis tool like Leonardo or Synplify, or if you have a working license for the old FPGA express. The P&R tool is available though at the ISE classics page in the downloads section of support.xilinx.com ----- Original Message ----- From: "krish venkita" <> To: <> Sent: Friday, September 19, 2003 10:19 PM Subject: [fpga-cpu] doubt regarding xilinx XST synthesis tool > > HI group, > I am new to xilinx, so it will be useful if anybody > can give me a clear picture regarding this > > Can Xilinx XST be used to target XC4000 chips by > starting from verilog or VHDL or schematic design flow > rather than from .edif file. > > Is there any other way to program XC4000 chips using > XST or do we need to go for FPGA express or leonardo > spetrum or any other tools if we need to start from > verilog or VHDL. > > Thanks in advance for ur answers > krish. > > __________________________________ > To post a message, send it to: > To unsubscribe, send a blank message to: |
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