usleep() accurate ?

Hello Soin,

I am using Quartus 4.2, SP1 (build 178), with NIOS II IDE version 1.1.0, build 137.

BTW, I haven't been on the bench yet. I am looking at my simulation and see that

accesses to certain of my regsiter file are not following the usleep() command.

I am running very simple code, just accessing custom register which have their

accesses interleaved with usleep() commands. I need accuracy since all my code

is based on usleep() as I am driving a one-wire interface. Here is trial piece of code:

IOWR_32DIRECT(REGSECT_DGL_0_BASE,0x88,0xBEEF0000);

usleep(12);

IOWR_32DIRECT(REGSECT_DGL_0_BASE,0x88,0xBEEF1111);

usleep(3);

IOWR_32DIRECT(REGSECT_DGL_0_BASE,0x88,0xBEEF1112);

usleep(50);

IOWR_32DIRECT(REGSECT_DGL_0_BASE,0x88,0xBEEF1113);

usleep(80);

Thanks,

Eric