Group Information- Members: 101
- Category: Electrical
- Founded: May 4, 2006
- Language: English
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Description
This group is for the discussion of the open-source 32-bit floating point unit (FPU), desgined by Jidan Al-Eryani. It can also be downloaded from opencores.org
Features
- FPU supports the following arithmetic operations:
- Add
- Subtract
- Multiply
- Divide
- Square Root
- For each operation the following rounding modes are supported:
- Round to nearest even
- Round to zero
- Round up
- Round down
- Pipelined to achieve high operating frequency (100MHz with Cyclone EP1C6)
- Tested with 2 million test cases
- Hardware proven: FPU was implemented in a Cyclone I–EP1C6 FPGA chip and was then connected to the Java processor JOP (www.jopdesign.com) to do some floating-point calculations.
For more details please read the documentation.
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Re: Is this group still active?
We also identified bugs in dealing with un-normalized numbers (when the exponent has the value "0", there is special treatment of the mantissa), and the
Posted - Sun Feb 15, 2009 3:15 am
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Chris Kingsley
thirtyninewinks
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Re: Is this group still active?
How about the group moderator, is he around? We can at least get rid of the spam by changing the way new users are approved. I do that with about a dozen
Posted - Sat Feb 14, 2009 8:38 pm
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redsp
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Re: Is this group still active?
this is a great little fpu core. I played with it a bit, then wanted to make some improvements, features enhancement. But the original author is mostly
Posted - Sat Feb 14, 2009 8:29 pm
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Pstrang Rzekle
pstrang_w_rz...
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Is this group still active?
I see that nearly all of the messages posted here in the last year are just spam. Is anyone still watching this group? Are there other users of the FPU
Posted - Sat Feb 14, 2009 7:47 pm
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redsp
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I can't multiplicate
Hello, i have the fpu_v19 Version of the FPU. All arethmetic operations works, but not the multiplicate. I get a wrong result. For example: 10 000 000 * 1.212
Posted - Mon May 5, 2008 8:29 am
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tommyothc03
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