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Altera_Forum
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11 years ago

Very low speed of HPS after Preloader

I try insert next code for Altera examples in main(): volatile int i; for (i = 0; i < 800*1000*1000; i++) ; In SDRAM-variant work is greater than 2 min, in HelloWorld for FFFF0000-addresses ...
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Altera_Forum
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11 years ago

2 rosj: BIG THANKS !

My function my_chk() now works 9-10 seconds instead about 3 minutes !

I include a remaked Altera Unhosted example with makeHPSfaster(). First commented call of my_chk() delayed to 3 min, second (after makeHPSfaster()) -- maximum 10 s.

And, please -- insert your code in
brackets, please ! :)

In armcc way is not compiled alt_cache.c + alt_mmu.c, only GNU.

2 Alex: you race my_chk() to 1.5 s ? Please include full example of project.

P.S. I include fast_hps.h.txt (this forum ignore .h-files) with "fast" code to "rise" HPS for Baremetal way.

Altera HWLIB sources and alt_pt.c with need codes imply be placed in subfolder "alt".

Without alt_int_cpu_init() a semihosting is hang, printf() and fopen() not works.