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Altera_Forum's avatar
Altera_Forum
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16 years ago

Issue of PS/2 IP core

I have implement a porgram which show the key from keyboard on VGA, but now i meet a trouble. it show twice character whenever i press the keyboard. I try to set a breakpoint at the condition if (dec...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

By the way, all, this is definitely some sort of timing issue. I too got it to work while debugging and stepping through the program, but not running at full 16MHz. I wondering if its managing to pull the same code from the buffer twice before it is cleared or something. I know it's not elegant, but inserting some sleep (somewhere, I can't remember now) did the trick.