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Altera_Forum's avatar
Altera_Forum
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19 years ago

IDT SRAM

hello I am working with stratix II EP2S60. I cant find any documents about nios programming for sram (IDT SRAM). for example, how can i write a 32 bit data in known address in nios. thanks
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
19 years ago

Hi gomiboy

I am using SRAM with 1024KB, then I have 20 bits for addressing.

this is my simple program in nios. I can write and read.

for(i=1;i<30;i++)

{

IOWR_32DIRECT(BASE_SRAM,4*i,i+1);

for(beta=1;beta<5;beta++)

{

}

alpha = IORD_32DIRECT(BASE_SRAM,4*i);

printf("%x\t",alpha);

}

but

if in second "for" I increse delay for example for(beta=1;beta<10;beta++)

when I read from SRAM i can just read 0xffffffff