DFPMU - Floating Point Coprocessor

Block Diagram

Solution Type: IP Core

End Market: Automotive, Broadcast, Computer & Storage, Consumer, Industrial, Medical, Military, Test & Measurement, Wireless, Wireline

Evaluation Method: OpenCore, OpenCore Plus

Technology: Processors and Peripherals: Peripherals

Arria Series: Arria 10, Arria V, Arria 10 SoC, Arria V SoC

Cyclone Series: Cyclone IV, Cyclone V, Cyclone V SoC

MAX Series: MAX 10, MAX V

Stratix Series: Stratix IV, Stratix V


Supported Device Family: 

Solution Type: 


The DFPMU is a Floating Point Coprocessor, de-signed to assist a CPU in performing floating point mathematic computations. The DFPMU replaces directly C software functions by equivalent, very fast hardware operations, which significantly ac-celerate the system performance. It doesn't re-quire any programming, so it also doesn't require any modifications to be made in the main software. Everything is done automatically during software compilation, by the DFPMU C driver. The DFPMU was designed to operate with DCD's DP8051, but can also operate with any other 8-, 16- and 32-bit processor. Drivers for all popular 8051 C compilers are delivered together with the DFPMU package. The DFPMU uses specialized CORDIC and standard algorithms, to compute math functions. It supports addition, subtraction, multiplication, division, square root, comparison, absolute value, change sign of a number and trigo-nometric functions: sine, cosine, tangent and arctangent.


  • Direct replacement for C float software functions such as: +, -, *, /,==, !=,>=, <=, <, >
  • C interface supplied for all popular compilers: GNU C/C++, 8051 compilers
  • No programming required
  • IEEE-754 Single precision real format support – float type
  • 16-bit word and 32-bit short integers format supported – integer types

Device Utilization and Performance


Getting Started

For additional information, contact Digital Core Design at: Wroclawska 94 41-902 Bytom Poland Tel: +48 32 2828266 Fax: +48 32 2827437 E-mail: aleads@dcd.pl Website: http://www.digitalcoredesign.com

IP Quality Metrics

Year IP was first released2002
Latest version of Quartus supported15.1
Altera Customer Use
IP has been successfully implemented in production with at least one customerY

Customer deliverables include the following:

  • Design file (encrypted source code or post-synthesis netlist)
  • Simulation model for ModelSim Altera edition
  • Timing and/or layout constraints
  • Testbench or design example
  • Documentation with revision control
  • Readme file
Any additional customer deliverables provided with IP
Parameterization GUI allowing end user to configure IPY
IP core is enabled for OpenCore Plus SupportY
Source language
Verilog; VHDL
Testbench languageVerilog; VHDL
Software drivers providedY
Driver OS supportTBD
User InterfaceAXI; Avalon-MM
IP-XACT Metadata includedN
Simulators supportedTBD
Hardware validated Y. Altera Board Name DE1, DE2
Industry standard compliance testing performed
If No, is it planned?Y
IP has undergone interoperability testing
Interoperability reports available  N

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