OSDev.org

Posted: **Sat May 16, 2009 9:14 pm**

I implemented a fixed PIC and have set up the KeyCode Descriptor Table, but I have an error.
I already fixed the keys so that I shouldn't get a repeated (make/break) key, but I do have an issue.

Ok, so as a test right now I just have my OS infinitely call my getKey method and display that character on the screen. It works fine after you enter like three letters, but I get problems during the first part.

As a note when you look at the screenshot, any "unprintable characters" are at the moment being handled by just acting like the '*' character! Keep that in mind.

Code: Select all

char Keyboard::getChar()
{
	char toRet;
	while (toRet == keyOp)
	{
		toRet = readInC(0x60);
	}
	if (stopRepeat)
	{
		keyOp = toRet;
		stopRepeat = false;
		return 0;
	}
	keyOp = toRet;
	stopRepeat = true;
	return KEYCODE[toRet-1];
}

Any ideas?

(Included a screen shot)
In my screen shot I typed the keys: "hello, world (enter) (enter) what is up?" to show you what it does...

Posted: **Sat May 16, 2009 10:00 pm**

The following code I tried also is buggy...

Code: Select all

	char toRet = 0;
	do
	{
		toRet = readInC(0x60);
	} while (!(readInC(0x64) & 1));

	if ((toRet & 0x80))
	{
		return 0;
	}
	else
	{
		keyOp = toRet;
		return KEYCODE[toRet-1];
	}

what is ends up doing is screwing up at the start, but also some characters I have to press a couple times or hold down to get them to appear...

Posted: **Sat May 16, 2009 10:11 pm**

Sorry about posting on my own thing...

Ignore this thread ya'll, I'm going to go the IRQ route.

OSDev.org

Multiple Keys on Return at First

Multiple Keys on Return at First

Re: Multiple Keys on Return at First

Re: Multiple Keys on Return at First