e_eja
Joined: 15 Nov 2003
Posts: 145
Helped: 4
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 06 Jan 2005 4:52 driver for 8255 |
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Hai, everyone
i try to drive the port 82C55 via pararel port, but ihave problem with latch that mention on schematics, i attach all port 8255 wih sourcing led and i inisialize the port tobe output. when i running program the problem arise
1. led on port A that should ligh on it's following this condition off-on-off again (some kind this port don't have latch condition).
2. when i remove the code
| Quote: |
Procedure Form1.Button1click(sender:Object);
Begin
...
outC($0); --> this code i remove
end;
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from the program the output led on port A and port B following righ program (off-on)
here's my schematics and my code in delphi
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