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listonoš



Joined: 24 Dec 2004
Posts: 6
Location: Czech republic
listonoš
Hi all,
please can you tell me how OS can recognize for example right ctrl from left ctrl. My OS run in PM and I have set keyboard mode 2. I know that left ctrl sends me 1Dh on port 60h. But when I press right ctrl there is 1Dh too. I read that keyboard sends E0h but I dont know where I can recieve it.

Thanks, Listonoš
Post 24 Dec 2004, 12:44
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roticv



Joined: 19 Jun 2003
Posts: 374
Location: Singapore
roticv
If you press right control, 2 bytes will be sent. The first byte you receive if you read from port 60h will be 0E0h, followed by 1Dh.
Post 24 Dec 2004, 13:22
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listonoš



Joined: 24 Dec 2004
Posts: 6
Location: Czech republic
listonoš
I read first byte from port 60h and then immediately I read second byte. Idea But OS must wait to next interrupt for next byte.
Thanks a lot roticv
Post 24 Dec 2004, 19:23
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listonoš



Joined: 24 Dec 2004
Posts: 6
Location: Czech republic
listonoš
For all who are interested in keyboard control I have small documentation (sure, not made by me)

Great holidays and happy New year and also new year


Description:
Download
Filename: keyboard.txt
Filesize: 46.94 KB
Downloaded: 348 Time(s)

Post 24 Dec 2004, 19:38
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