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MeetingJanuary26
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JimLewis
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P1076 January 26, 2012 Meeting Minutes
Attendees:
PeterFlake
*
HansTiggeler
*
DavidBishop
*
JimLewis
*
JarekKaczynski
*
JohnShields
Agenda:
Approve Jan 5 meeting minutes: Motion Jerry 2nd Peter
Look-Up Table
DPI
Fixed and Floating Packages: Look-Up Table
New fixed and float packages to implement functions such sin, log, ... from math real
3 versions of implementations
Use math real
Use equation and stay in fixed/float
Use look up table
Tested all 3 in synthesis
Equation work to avoid division
Look up table work to minimize size of ROM
Division of long number - look up table of reciprocal
Proposed additions to fixed_generic_pkg and float_generic_pkg
floor - integer closest to 0
Ceil -
Precision - number of bits to keep in the fraction
AI: David to add documentation linked through the Collected Requirements list
DPI
Proposal on TWIKI progressing
Issue from John Shields: Types like natural cannot be differentiated from integer on subprogram calls
Review of current proposal on Collected Requirements
Can the C side of DPI see updates on signals? no
Everything on the DPI side is as if it were passed by value
Important that the C code is reentrant
Peter to update per issues in discussion
Encryption
Jerry and John: Working on syncing up with IEEE P1735
Next Meeting Date (proposed):
Thursday February 16, 8 am Pacific
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Topic revision: r4 - 2020-02-17 - 15:36:20 -
JimLewis
P1076
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