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Altera_Forum
Honored Contributor
21 years agoassembly prog
Hi Has anyone tried to write assembly language programs for nios II processor? If so plz tell me how to start the program i.e., i mean to say are any initial statements required like main(...
Altera_Forum
Honored Contributor
21 years agorakesh,
if you need more details about assembly and instruction. you should refer to reference and developper handbooks for Nios II. about the prog I did, it's just stupid and incomplete showing you what it looks like. (you were using Nios I assembly in your post I guess). If your SPOC has some leds you can replace Base Led by the address where are mapped your leds, and try something like turning the led on/offfile "Main.s"
.section .text
.align 3
.global main
.type main, @function
main:
//#define LED_BASE 0x00000820
movhi r13, %hiadj(0x00000820)
addi r13, r13, %lo(0x00000820)
//valeur par bit (1) allume (0) eteint
movhi r12, %hiadj(255)
addi r12, r12, %lo(255)
//turn led on
stwio r12, 0(r13)
hope it can help
Sylvain