Forum Discussion

Honored Contributor

10 years ago

how to use the floating point hardware in nios II custom instructions

hi i want to compare the speed difference of floating point calc between custom instruction floating point and software. this is my code:# include <stdio.h># include <altera_avalon_pio_regs....

Altera_Forum

Honored Contributor

10 years ago

I assume you are using Floating Point Hardware 1 (not the 2). You will need to check your objdump to compare between the one with/out the FPH. If the custom instructions are properly inserted, you should see "custom" assembly codes appear in your objdump.

Floating point reference: https://www.altera.com/content/dam/altera-www/global/en_us/others/literature/ug/ug_fph2.pdf

Forum Discussion

how to use the floating point hardware in nios II custom instructions

Recent Discussions

NIOS-V QSYS Warning Properties (associatedClock) have been set on

DK-DEV-AGI027-RA: JTAG chain broken after Nios V Hello, FPGA recovery fails

Where is FreeRTOS-Plus-TCP Design

NIOS V: Systick based timeouts not available when using internal timer

Ashling RISC Free IDE fails to download ELF file